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JP,2010-514337,A
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CLAIMS
DETAILED DESCRIPTION
TECHNICAL FIELD
PRIOR ART
EFFECT OF THE INVENTION
TECHNICAL PROBLEM
MEANS
DESCRIPTION OF DRAWINGS
DRAWINGS
* NOTICES *
JPO and INPIT are not responsible for any
damages caused by the use of this translation.
1.This document has been translated by computer. So the translation may not
reflect the original precisely.
2.**** shows the word which can not be translated.
3.In the drawings, any words are not translated.
[Detailed Description of the Invention]
[Field of the Invention]
[0001]
The present invention is the vertical section extending (longitudinal extension)
which can spread electromagnetic waves waveguide composition (waveguide
arrangement) which it has, and One or more waveguide parts, It is related with
the waveguide composition which has the electric supply composition (feed
arrangement) constituted in order to supply electric power to a waveguide part
in the 1st which intersects perpendicularly mutually, and second polarization
(polarization).
[Background of the Invention]
[0002]
In the design of a microwave circuit, a waveguide is often used with the low-
loss characteristic. Usually, exciting a rectangular waveguide in two
polarization which intersects perpendicularly is often liked. This is realized
today from the direction a direction and 2 cross at right angles using the
preuve of 2 which penetrates a waveguide. Preuve may be connected to a connector
with the suitable outside of a waveguide in order. These arrangement uses many
components and serves as a high cost dramatically.
[Summary of Invention]
[Problem to be solved by the invention]
[0003]
A 2 polarization waveguide is generally applied to the inside of an active
electronic scanning array (AESA). Such an antenna has many radiation antenna
elements. Therefore, since many individual components which require an assembly
exist, today's 2 polarization electric supply composition serves as a high cost
dramatically. Many components which require an assembly also produce the problem
about accuracy which has the disadvantageous influence for cost.
[0004]
Therefore, the needs about the electric supply composition of the 2 polarization
waveguide of the simplified low cost which can be unified to the existing active
T/R (transmission/reception) module exist.
[0005]
There is the problem given to the present invention in providing the electric
supply composition of the 2 polarization waveguide of the simplified low cost
compared with the former.
[Means for solving problem]
[0006]
The problem given to the present invention is solved by the waveguide
composition described at the beginning. Electric supply composition is provided

with the dielectric supporting material (dielectriccarrier material) which has
the first second main and main side (main side) formed in each in the metallic
pattern (metalization pattern). A metallic pattern is provided with the first
feed conductor that supplies electric power in first polarization, and the
second feed conductor which supplies electric power in second polarization.
First polarization is excited by the first excitation device to which electric
power is supplied by a first feed conductor, and second polarization is excited
by the second excitation device to which electric power is supplied by a second
feed conductor. One or more means make symmetrical structure about vertical
section extending.
[0007]
According to the preferable embodiment, waveguide composition is provided with a
first waveguide part. A first waveguide part is provided with a first wall, a
second wall, the 3rd wall, the 4th wall, and a vertical opening. A first wall, a
second wall, and the 3rd wall form U character-like box-frame construction
substantially. The 4th wall constitutes the top plate which electrically
connects those walls on a first wall, a second wall, and the 3rd wall. When a
waveguide part is attached to a dielectric supporting material, the top plate
was substantially parallel to the dielectric supporting material, was seen from
the dielectric supporting material, and is outside suitable (facing away from).
A first excitation device is provided with a first structure that extends from
the 4th wall, and extends in vertical section extending. A first structure makes
tapered shape towards the first feed conductor that intersects perpendicularly
with a first main side, and contacts a first feed conductor electrically.
[0008]
According to other preferable embodiments, waveguide composition is provided
with a second waveguide part similar to a first waveguide part. It opposes
mutually and a first waveguide part and second waveguide part are arranged so
that all the waveguide parts accompanied by the dielectric supporting material
arranged between the waveguide parts of 2 may be formed together. A first
excitation device is provided with a second structure which extends from a
second waveguide part, intersects perpendicularly with a first main side and
extends in a longitudinal direction. A second structure extends towards a first
feed conductor, and contacts a first feed conductor electrically.
[0009]
According to other preferable embodiments, a first waveguide part and second
waveguide part are integrally formed, and constitute the waveguide part which
has (side) the being [ first and second ], 3rd, and 4th sides and which is
integrated. The being [ it / first ] and 3rd sides oppose mutually, the 1st and
3rd sides are provided with the first longitudinal slot formed in the central
part of the 1st and 3rd near opposed faces, and a second longitudinal slot by
each, and a slot is constituted for insertion of a dielectric supporting
material.
[0010]
According to other preferable embodiments, a second excitation device is
provided with the tapered structure which makes one or more pairs which extend
in vertical section extending, and each taper intersects perpendicularly as
substantially as the taper of a first excitation device. Make mutually the
tapered structure of 2 which makes a pair about the symmetrical line which
extends in vertical section extending and divides a first main a dielectric
supporting material side equally into the portion of two, and symmetry the
tapered structure of 2, It opposed mutually, and has been arranged and each
taper has turned to the direction away from feed structure (directed away from).
[0011]
According to other preferable embodiments, tapered structure is made as an
etching structure connected to the surrounding cope plate structure (surrounding
ground plane), and makes some metallic patterns on a first main side. Etching
structure extends in vertical section extending, and makes tapered shape towards
the surrounding cope plate structure.
[0012]
According to other preferable embodiments, each tapered structure is provided
with the box-frame construction which extends at right angles to a first main
side. Each box-frame construction has the outside surface shape corresponding to

tapered structure, and electric power is supplied to box-frame construction by a
second feed conductor. Box-frame construction may be integrally formed with the
4th wall of a first waveguide part.
[0013]
According to other preferable embodiments, electric power is supplied to a
second excitation device by inductive coupling with a second feed conductor.
[0014]
Other preferable embodiments are made clear from the description of dependent
claim.
[Effect of the Invention]
[0015]
For example, many advantages including the following advantages are provided by
the present invention.
- Since the present invention is unified with a T/R module and may be used, a
low-loss system is obtained.
- Since a connector does not exist between a T/R module and a radiant element,
size, a loss, and cost decrease.
- The absence of a connector eliminates the contact problem of a connector.
- A microwave component is protected from the circumference and may be arranged
inside a waveguide.
[Brief Description of the Drawings]
[0016]
[Drawing 1]The plan of the dielectric supporting material concerning the first
embodiment of the present invention is shown.
[Fig.2 a] The bottom view of the waveguide part concerning the first embodiment
of the present invention is shown.
[Fig.2 b] The side view of the waveguide part concerning the first embodiment of
the present invention is shown.
[Drawing 3]The side view of the form of the center "slice" of the waveguide part
of Fig.2 a and Fig.2 b attached to the dielectric supporting material of Fig.1
is shown.
[Fig.4 a] The plan of the dielectric supporting material concerning the second
[Fig.4 b] The side view of the dielectric supporting material concerning the
second embodiment of the present invention is shown.
[Fig.4 c] The fragmentary perspective view of Fig.4 a is shown.
[Fig.4 d] It is a fragmentary perspective view of Fig.4 a, and the example of a
changed completely type of the second embodiment of the present invention is
shown.
[Fig.4 e] The bottom view of the waveguide part concerning the example of a
changed completely type of the second embodiment of the present invention is
shown.
[Fig.4 f] The cross sectional view of Fig.4 e is shown.
[Fig.5 a] The side view of a waveguide part concerning a 3rd embodiment of the
present invention attached to the dielectric supporting material is shown.
[Fig.5 b] The plan of the dielectric supporting material concerning a 3rd
[Fig.6 a] The side view of the waveguide part of 2 concerning a 4th embodiment
of the present invention attached to the dielectric supporting material is
shown.
[Fig.6 b] The plan of the dielectric supporting material concerning a 4th
[Fig.7 a] The elevation of the waveguide part concerning the example of a
changed completely type of a 4th embodiment of the present invention integrated
is shown.
[Fig.7 b] The waveguide part with which Fig.7 a accompanied by the inserted
dielectric supporting material was unified is shown.
[Drawing 8]An example of the waveguide part attached to the dielectric
supporting material is shown, and 90-degree bend is formed.
[Fig.9 a] The first example of the opening in the dielectric supporting material
for 90-degree bend is shown.
[Fig.9 b] The second example of the opening in the dielectric supporting
material for 90-degree bend is shown.
[Fig.9 c] The 3rd example of the opening in the dielectric supporting material

for 90-degree bend is shown.
[Description of Embodiments]
[0017]
Below, the details of the present invention are described, referring to
Drawings.
[0018]
The dielectric supporting material 1 which has first main side 2 which has
metallic copper covering, and second main side 3 is shown in the Fig.1 in which
the first working example of the present invention is shown. Generally, although
the 1st and copper on a second main side are used for each as the first cope
plate (ground plane) 4 and the second cope plate 5, they are removed by the
degree by which a desired copper pattern is formed on each main side 2 and 3.
[0019]
The first cope plate 4 mainly constitutes beer (via) 4a and the frame structure
connected to a second cope plate by 4b. Although the vias 4a and 4b are shown in
the figure corresponding through a description, below, they omit a description.
Of course, the number of vias and arrangement are arbitrary, and a via may not
exist.
[0020]
The second cope plate 5 mainly covers second main side 3 except the portion
which a feed conductor runs. First main side 2 of the dielectric supporting
material 1 has the vertical section extending equally divided by the portion of
2 with the symmetrical line S.
[0021]
On first main side 2 of the dielectric carrier 1, the first feed conductor 6 and
the second feed conductor 7 exist. The feed conductors 6 and 7 are constituted
in order to supply electric power in each polarization in the waveguide part
(Fig.1 not shown) in which surface mounting is possible. Since much form of
suitable transmission and/or a receiving set can be considered and it is known
as Japanese lacquer and a prior art, the reference point of the feed conductor
is not shown in Fig.1. The first conductor 6 intersects the metallic pattern on
first main side 2, and is partially formed on second main side 3. Transition
(transition) between the main sides 2 and 3 is realized by the vias 8a and 8b.
The first feed conductor 6 is moved from a second main side with the via 8
(transferred), and is ended within the electric supply pad 9.
[0022]
The waveguide part 10 in which surface mounting is possible has first wall 11,
second wall 12, 3rd wall 13, and 4th wall 14 side and opening side 15 and the
vertical opening 16, as shown in Fig.2 a and 2b. The 1st - the 3rd wall 11, 12,
and 13 form U character-like box-frame construction substantially. The 4th wall
14 connects the 1st - the 3rd wall 11, 12, and 13, and constitutes a top plate
on the walls 11, 12, and 13. When the current carrying part 10 is attached to
the dielectric supporting material 1, the top plate 14 is substantially parallel
to the dielectric supporting material 1, and it has turned to the outside,
seeing it from a dielectric supporting material.
[0023]
Fig.3 shows the longitudinal cross section "slice" of the waveguide part 10 by
which surface mounting was carried out, when attached on first main side 2 of
the dielectric supporting material 1. The slice is shown along the symmetrical
line S. The cope plate 5 on second main side 3 functions partially as a fifth
wall of the waveguide part 10 by which surface mounting was carried out, and
closes the vertical opening 16. The dielectric supporting material 1 and the
waveguide part 10 by which surface mounting was carried out form the 2
polarization waveguide accompanied by electric supply integrated together. The
cope plate 4 on first main side 2 has partially a region corresponding to the
surface of action 17 in which soldering on the waveguide part 10 is possible
which can be soldered, as shown in Fig.1.
[0024]
Reference of Fig.2 a, Fig.2 b, and Fig.3 will form transition to the waveguide
part 10 by which surface mounting was carried out from the first feed conductor
6 as the stairs structure 18 which has height vertical to the main section
extending of the 4th wall 14, and the width corresponding to the width of the
first feed conductor 6. The stairs structure 18 has the contact portion 19
constituted by the electric supply pad 9 and identical level of the first feed

conductor 6, when the waveguide part 10 is attached to the dielectric carrier 1.
[0025]
Since it is soldered to the electric supply pad 9, the contact portion 19 is
constituted. The remainder of the first stairs structure 18 forms the stairs 20
and 21 which lead to the 4th wall 14 of the waveguide part 10, and preferably is
integrally formed with the waveguide part 10. Such transition is known as a
prior art and omits a detailed description.
[0026]
The second feed conductor 7 is divided into the portion, the first sub conductor
22, and the second sub conductor 23 of 2 by the output distributor 24 which
functions also as a 180-degree phase machine. The second feed conductor 7 is
equally divided between the first sub conductor 22 and the second sub conductor
23, and 180-degree phase contrast is introduced between the first sub conductor
22 and the second subbody 23. The second feed conductor 7 is carried out in this
way, and is changed into electric supply [ **** ] from disequilibrium electric
supply.
[0027]
According to the present invention, as for the electric supply side (feeding
side) of the etched first (etched) ridge structure 26, the first sub conductor
22 is connected to 25, and the ridge structure 26 has the stairs composition to
which it sees from electric supply side 25, and turns to the outside. Similarly,
the second sub conductor 23 is connected to electric supply side 27 of the
etched second ridge structure 28. The etched second ridge structure 28 is a
mirror image about the symmetrical line S of the etched first ridge structure
26. The symmetrical line S passes through between the etched ridge structures 26
and 28, makes a perpendicular to the section extending on the electric supply
sides 25 and 27, and extends along with the vertical section extending of the
dielectric supporting material 1. The etched ridge structures 26 and 28 become
symmetrical [ appearance ] about the symmetrical line S. The symmetrical line S
passes through space 29 between the etched ridge structures.
[0028]
The etched ridge structures 26 and 28 exceed the first cope plate 4 that avoids
the etched ridge structures 26 and 28.
[0029]
The electric supply pad 9 is arranged between each etched ridge structure 26 and
the stairs composition of 28.
[0030]
When the waveguide part 10 is attached to a dielectric supporting material, the
first feed conductor 6 is constituted via the stairs structure 18 of the
waveguide part 10 by which surface mounting was carried out in order to excite
first polarization. Electric field make a perpendicular to the section extending
of first main side 2. The second feed conductor 7 is constituted in order to
excite the second polarization which intersects perpendicularly with first
polarization via the etched ridge structures 26 and 28 on the dielectric
supporting material 1.
[0031]
According to a second preferable embodiment, reference of Fig.4 b which is a
side view of the plan shown in Fig.4 a and Fig.4 a will attach the first closed
box-frame construction 30 that extends at right angles to first main side 2, and
the second closed box-frame construction 31 on the dielectric supporting
material 1. Each box-frame construction 30 and 31 has the outside surface shape
corresponding to the outside surface shape of the etched ridge structures 26 and
28 concerning a first embodiment. Each box-frame construction 30 and 31 is
soldered to each electric supply sub conductor 22 and 23 via the second feed
conductor 7 and the union object 24 of an output distributor and a 180-degree
phase machine so that electric power may be supplied like the etched ridge
structure. Preferably, the box-frame construction 30 and 31 is fixed by pin (not
shown) inserted in the corresponding hole in the dielectric supporting material
1, and is soldered. A wall has predetermined height and width and surrounds each
internal space 32 and 33. Such a generally good result is obtained that a wall
is expensive. The inner substance (solid) which may have a top plate and does
not have internal space may be sufficient as structure.
[0032]

When Fig.4 c which is the rough expansion perspective view of a region which had
the seal put by Fig.4 a with the circle C of a dashed line is referred to in the
modification of a second embodiment, each box-frame construction (one is shown
in Fig.4 b.), It is the form of the metal wire 33 held from the dielectric
supporting material 1 at a predetermined distance, and preferably, when a
waveguide part is attached, it is the form of the metal wire 33 held in the
central part of the perpendicular section extending 5 of a waveguide part. Each
metal wire 33 is the form of the closed structure of having the outside surface
shape corresponding to the outside surface shape of the etched ridge structure
concerning a first embodiment. Each line 33 is supported by the pins 34a, 34b,
34c, 34d, 34e, and 34f inserted in the corresponding hole in the dielectric
supporting material 1. The pin 34a has sufficient size to be soldered to each
electric supply sub conductor 23.
[0033]
In the example of a changed completely type, top-plate structure (not shown) is
held by a pin like a line.
[0034]
Attachment of the structure mentioned above with reference to Fig.4 a, Fig.4 b,
Fig.4 c, and Fig.4 d may be realized using the pin and soldering which are
inserted in the hole in the dielectric supporting material 1, as mentioned
above. It may also be considered that surface mounting of the structure is
carried out using the suitable pad which was formed on first main side 2 and
which can be soldered.
[0035]
In other second preferable modifications of the embodiment, reference of Fig.4 d
which is the rough expansion perspective view of a region which had the seal put
by Fig.4 a with the circle C of a dashed line uses top-plate structure. The top-
plate structure 35 has the outside surface shape according to the outside
surface shape corresponding to the outside surface shape of the etched ridge
structure concerning a first embodiment. Each top-plate structure 35 is
supported by the pins 36a, 36b, 36c, 36d, 36e, and 36f inserted in the
corresponding hole in the dielectric supporting material 1. The pin 36a has
sufficient size to be soldered to each electric supply sub conductor 23.
[0036]
In the yet another modification of a second preferable embodiment, Reference of
Fig.4 f which is a cross sectional view of Fig.4 e and Fig.4 e shows the box-
frame construction 37 and 38 which makes a part of waveguide part 10a, is
integrally formed with the 4th wall 14a like the stairs structure 18a, and has
vertical height to the main section extending of the 4th wall 14a. When the
waveguide part 10a is attached to dielectric carrier (not shown), height is
adjusted so that a first sub conductor and second sub conductor, and contact may
be formed. Contact is preferably formed by soldering. The box-frame construction
37 and 38 is preferably formed in this case as a solid part which does not have
internal space.
[0037]
In the modification of the second embodiment disclosed with reference to Fig.4 a
- Fig.4 f, the etched ridge structure may exist on a dielectric carrier, when a
waveguide part is attached to a dielectric carrier.
[0038]
A 3rd embodiment for which the etched ridge structure concerning a first
embodiment is used is shown in Fig.5 a. The dielectric supporting material 1' is
the form of a double layer carrier (multilayer carrier), and as described about
the first embodiment, it has the first second main and main side [ 3' ] 2'.
Here, the first main side 2' is arranged at the side which faces the outside of
the first dielectric layer 39, and the second main side 3' is arranged at the
side which faces the outside of the second dielectric layer 40. being inserted
between the first dielectric layer 39 and the second dielectric layer 40 -- the
1st and the second main sides 2' and 3' -- the upper metal layer (metalization)
and the same kind of intermediate metal layer (intermediate metalization) 41
exist. The intermediate metal layer 41 is processed into either the first
dielectric layer 39 or the second dielectric layer 40 first.
[0039]
Electric supply of the stairs structure 18' in the waveguide part 10' by which
surface mounting was carried out is performed via a first feed conductor like

the electric supply described by the first embodiment, as shown in Fig.5 b which
is a plan of the dielectric supporting material 1' like the waveguide part to
which surface mounting of the first embodiment was carried out. The first feed
conductor 6' runs on the first principal layer 2' and the second principal layer
3', and when a first feed conductor changes a side with the vias 8a' and 8b'
(chage side), it passes the intermediate metal layer 41. The second feed
conductor 7' passes the first dielectric layer 39 so that it may run on the
first main side 2' and may run via the intermediate metal layer 41. When running
via the intermediate metal layer 41, a direction is changed and the second feed
conductor 7' passes through space 29' between etched ridge structure 26' and 28'
so that it may run at right angles to the symmetrical line S. After passage, the
second feed conductor 7' is still running via the intermediate metal layer 41,
and it is ended so that good correspondence (matching) may be realized within
the open stub 43 of a suitable predetermined distance from passage. Therefore,
arrangement of this second feed conductor supplies electric power to etched
ridge structure 26' and 28' by etched ridge structure 26' and combination
through space 29' between 28'.
[0040]
Ridge structure may be formed according to the embodiment described with
reference to Fig.4 a, Fig.4 b, Fig.4 c, and Fig.4 d.
[0041]
A 4th embodiment by which improved symmetry is realized is shown in Fig.6 a.
Dielectric supporting material 1'' is the form of a double layer carrier, as it
described by the first embodiment, first main side 2'' and a second main side
have 3'', and it has each metal layer 4'' and 5''. Here, as for a first main
side, 2'' is arranged at the side suitable for the outside of the first
dielectric layer 44, and, as for a second main side, 3'' is arranged at the side
suitable for the outside of the second dielectric layer 45. It is inserted into
the first dielectric layer 44 and the second dielectric layer 45, and the 3rd
dielectric layer 46 and 4th dielectric layer 47 exist.
[0042]
The first intermediate metal layer 48 exists between the first dielectric layer
44 and the 3rd dielectric layer 46, between the 3rd dielectric layer 46 and the
4th dielectric layer 47, the second intermediate metal layer 49 exists and the
3rd intermediate metal layer 50 exists between the 4th dielectric layer 47 and
the second dielectric layer 45. all the intermediate metal layers 48, 49, and 50
-- the 1st, second main side 2'', and 3 -- it is the same kind as 'metal layer
of '4'', 5''. The intermediate metal layers 48, 49, and 50 are processed into
either of each adjoining dielectric layer 44, 45, 46, and 47 first. The
dielectric layers 44, 45, 46, and 47 are the same thickness substantially.
[0043]
As for a first main side, in 2'' up, as shown in Fig.6 b which is a plan of
dielectric supporting material 1'' which does not have a waveguide part, the
first pair of etched ridge structure 26'' concerning a first embodiment and 28''
is used with the symmetrical line S which runs space 29'' between them. second
main side 3'' -- in a top, second opposite (not shown) of the etched ridge
structure exists, and substantially, both pairs oppose identically and mutually
and are arranged. the etched ridge structure -- both -- an opposite -- 26'' and
28 -- electric power is supplied by 'second feed conductor 7' which 'runs via
the second intermediate metal layer 49'. Electric supply is realized as it
described by a 3rd embodiment.
[0044]
First feed conductor 6'', as for, a first main side runs 2'' up is divided into
the first sub conductor 51 and the second sub conductor 52b by output
distributor 6'' which functions also as a 180-degree phase machine. Therefore,
first feed conductor 6'' is equally divided between the first sub conductor 51
and the second sub conductor 52. 180-degree phase contrast is introduced between
the first sub conductor 51 and the second sub conductor 52.
[0045]
the first sub conductor 51 is moved to the first intermediate metal layer 48
with the via 53a -- first principal layer 2'' -- it ends within the upper first
electric supply pad 54, and is returned to a first main side with other vias
53b.
[0046]

the second sub conductor 52 is moved to the 3rd intermediate metal 50 with the
via 53c -- second principal layer 3'' -- it ends within the upper second
electric supply pad, and is moved to a second main side with other vias.
[0047]
Fig.6 b -- illustrated expedient top and 3rd intermediate metal layer 50 top and
second principal layer 3'' -- top Arrangement is not shown. however, these
arrangement -- those appearance -- first intermediate metal layer 48 top and
first principal layer 2'' -- since it is reflected in the upper arrangement, it
is not difficult for imagination.
[0048]
As shown in Fig.6 a, the first waveguide part 55a in which surface mounting is
possible is attached to first main side 2'' like the waveguide part which was
used by the first embodiment and in which surface mounting is possible, and
electric power is supplied to first polarization by the first sub conductor 51.
Contact is formed between the stairs structure 56a of the first waveguide part
55a in which surface mounting is possible, and the first electric supply pad 54.
The second waveguide part 55b in which surface mounting is possible, A second
main side is attached to 3'', and the second waveguide part 55b in which the
first waveguide part 55a and surface mounting in which surface mounting is
possible are possible opposes mutually, and is attached so that the first
waveguide part 55a in which surface mounting is possible may be attached to 2''
as for a first main side. Electric power is supplied to the first polarization
of the second waveguide part 55b in which surface mounting is possible by the
second sub conductor 52. Contact is formed between the stairs structure 56b of
the second waveguide part 55b, and a second electric supply pad.
[0049]
Thus, the second waveguide part 55b in which the first waveguide part 55a and
surface mounting in which surface mounting is possible are possible forms all
the waveguide parts together. Symmetrical electric supply of first polarization
is realized. the ridge structure 26 into which second feed conductor 7'' was
etched -- electric power is supplied by the pair to which '', 28'' oppose to
both the first waveguide part 55a in which surface mounting is possible, and the
second waveguide part 55b in which surface mounting is possible.
[0050]
Many modifications exist about this embodiment. Electric supply of ridge
structure 26 '', 28' etched' may be performed as it described by the first
embodiment. The sub conductor of the same number is formed using a suitable
number accompanied by the inserted metal layer of dielectric layers.
[0051]
As for first main side 2'' or a second main side, only the couple of etched
ridge structure 26'' and 28'' may be arranged and used for either of 3''.
[0052]
Since the stairs structures 56a and 56b of the waveguide parts 55a and 55b form
symmetrical electric supply and one or more rectangular electric supply becomes
symmetrical according to the present invention, using only 1 of the etched ridge
structure may also be considered. although symmetry will be deteriorated
slightly by such composition if it puts in another way -- first main side 2'' --
1 of ridge structure into which either a top or on the second main side 3' were
etched -- it accepts and comes out and is sufficient.
[0053]
All the modifications of the box-frame construction described in relation to the
second embodiment can be applied here, without following with the etched ridge
structure.
[0054]
The special modification of a 4th embodiment which constitutes the waveguide
part 58 which the first waveguide part 57a and the second waveguide part 57b
were integrally formed, and is integrated is shown in Fig.7 a. The waveguide
part 58 integrated has first side 59, second side 60, 3rd side 61, and the 4th
side 62. First side 59 and the 3rd side 61 oppose mutually, and these each side
59 and 61 is provided with the first longitudinal slot 63 and the second
longitudinal slot 64 which were formed in the central part of the opposed faces
65 and 66 of first side 59 and 3rd side 61 by each.
[0055]
Reference of Fig.7 b inserts dielectric supporting material 1'' which has a

suitable number of dielectric layer (not shown) in the suitable longitudinal
position for these slots 63 and 64.
[0056]
A first contact pad and second contact pad are soldered to each stairs structure
67 and 68. In this special modification, although surface mounting of the
waveguide part 58 integrated is not carried out, it constitutes the 2
polarization waveguide which has plane electric supply in the form of
superficial dielectric carrier 1'' accompanied by a metal layer.
[0057]
The example of the waveguide 69 accompanied by the 90-degree bend which passes
along a dielectric supporting material integrated is shown in Fig.8. unifying --
having had -- a waveguide -- 69 -- Fig.1 -- being shown -- a thing -- it is the
same -- form -- it is -- being first -- main -- a side -- two -- ' -- ' -- ' --
and -- being second -- main -- a side -- three -- ' -- ' -- ' -- following -- a
dielectric -- a supporting material -- one -- ' -- ' -- ' -- and -- surface
mounting -- carrying out -- having had -- a waveguide part -- ten -- ' -- ' -- '
-- using . This principle may be used for the 1st - all 3rd embodiment. The
opening side of the first embodiment shown in Fig.1 is replaced by the 90-degree
bend 70 which passes along dielectric supporting material 1''' here.
[0058]
The bend 70 is the conventional design and uses the stairs structure 71 which
extends covering the width of waveguide part 10'''. immediately after bend --
the dielectric supporting material 1' -- '' -- the inner opening 72 exists and
continues the section extending of the waveguide by which a direction change was
made. The waveguide opening 73 is formed in second main side 3''[ of dielectric
supporting material 1''' ]'. An opening may function as a waveguide flange for
attaching the waveguide or radiant element to continue, and may function as the
radiant element itself.
[0059]
As shown in Fig.9 a and Fig.9 b, the openings 73a and 73b may have circular and
a rectangle. As shown in Fig.9 c, a cross-joint form may be sufficient as the
opening 73c. Of course, other form may be considered.
[0060]
Of course, many other working examples of the 2 polarization waveguide using
plane electric supply of the present invention can be considered, and the shown
working example is an example to the last.
[0061]
The present invention is not limited to the shown embodiment, but may be freely
changed within Claims.
[0062]
For example, suitable metal may be sufficient as a metal layer, and the
separated form of a metal sheet or a metal piece may be sufficient as it.
[0063]
The conventional waveguide may continue and the opening of the above-mentioned
waveguide integrated may be ended as a radiant element.
[0064]
For example, fixing methods other than soldering, such as use of an electric
conduction binder, can be considered.
[0065]
The number of a dielectric layer and metal layers may be changed according to
course attachment of the feed conductor used. For example, in a first
embodiment, a dielectric supporting material may have a dielectric layer of 2
into which a metal layer is inserted in between. The cope plate on the second
main side is perfect in this case (complete), and it does not have the etched
conductor. Course attachment of the first feed conductor is instead carried out
by the inserted metal layer.
[0066]
Although the thickness of a dielectric layer is substantially the same
preferably, of course, it may change.
[0067]
Any of the form of an individual component or the form of the etched conductor
may be sufficient as the union object of an output distributor and a 180-degree
phase machine mentioned above. For example, it is the 180-degree extra length
(extral ength) added to the output distributor of the Wilkinson form, and the

sub conductor of 1. Of course, both combination may also be considered.
[0068]
Copper coating may be removed in the position of an opening, and the opening in
the dielectric supporting material accompanied by 90-degree bend may be formed
so that the dielectric material itself may remain.
[0069]
Although the electric supply tab described being arranged at the etched ridge
structure [ which sees from electric supply and is outside suitable ] side, as
for a side other than the etched ridge structure, it may be arranged suitably at
the same side as the electric supply sides 25 and 27 shown in Fig.1. In some
cases, the latter arrangement may be more preferable than the former
arrangement.
[0070]
Electric power may be supplied to cross polarization so that the polarization of
circular or an elliptical form may be obtained.
[0071]
The symmetrical line S does not specify the perfect symmetry of a dielectric
carrier. A feed conductor is not symmetrical, concerning the symmetrical line S
for example. The symmetrical line S has the main functions to define the
symmetry of the etched ridge structure.
[0072]
The number of the stairs applied to the stairs structure on a waveguide part,
the etched ridge structure, and box-frame construction may change so that
desired performance may be realized.
[0073]
Instead, all the stairs structures and etched ridges which were described as
having discontinuous stairs may be continuously formed so that an excitation
device may be constituted generally.
[0074]
The first cope plate 4 may cover also except first main side 2.
[0075]
Stairs structure and ridge structure constitute an excitation device.
[0076]
The waveguide composition concerning the present invention has the vertical
section extending which can spread electromagnetic waves.
Representative drawing
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JP,2011-505093,A
Detail
Image
CLAIMS
TECHNICAL FIELD
PRIOR ART
TECHNICAL PROBLEM
MEANS
DRAWINGS
* NOTICES *

[0001]
The present invention relates to the micro stripe waveguide transformation
composition provided with the derivative carrier material composition which has
the 1st main surface and the 2nd main surface. This composition is provided with
the converter provided with the opening which has at least one edge, and the
electrical conduction boundary electrically connected to the grounding metallic
coating of the 2nd main surface along with the opening. In dielectric carrier
material composition, the transmission lead is extended toward the boundary.
[0002]
When designing a microwave circuit, the micro stripe transmission line is used
generally. The micro stripe transmission line is provided with a metal contact
surface and a conductor, and a derivative carrier material is arranged between a
metal contact surface and a conductor. Such composition is economical and
comparatively easy to design.
[0003]
There are stripline conductors as a kind of another transmission line. In
stripline conductors, the conductor is pinched between dielectric carrier
materials and the contact surface is placed at the surface of the dielectric
carrier material which turned to the outside to the conductor.
[0004]
There is a coplanar conductor as a kind of another transmission line. In a
coplanar conductor, a conductor is placed at a dielectric carrier material, a
contact surface is surrounded by the conductor, and is placed at the surface of
the same dielectric carrier material as a conductor, and a small gap is between
a contact surface and a conductor.
[0005]
However, neither of the transmission lines mentioned above may sometimes be
unable to be used by the loss of a dielectric carrier material. For example,
when a layout has a filter, waveguide technique needs to realize the filter.
Usually, the waveguide is filled with the atmosphere or low-loss material.
[0006]
Therefore, since a loss is made to be deteriorated when a microwave circuit
micro stripe layout has a filter, a waveguide filter may realize a filter. In
this case, a micro stripe waveguide transformation part is required for the end
of a filter. As for such a waveguide, it is preferable to make installation
possible to a dielectric carrier material as a surface installation type.
[0007]
Such a surface installation type waveguide is created so that it may have three
wall surfaces and one effective area. And metallic coating is performed to the
surface of the dielectric carrier material facing a waveguide. Metallic coating
is committed as remaining wall surfaces of a waveguide.
Waveguide structure is blockaded when a waveguide is aligned with a dielectric
carrier material.
[0008]
When needed [ with the form in which the micro stripe waveguide transformation
part curved ] as another application to a surface installation type waveguide,
it may make it possible to install a waveguide in a dielectric carrier material
so that it may spread vertically intrinsically to the main surface of a
dielectric carrier material.
[0009]
Realizing a waveguide filter is also considered so that it may have 4th another
blocking surface created as metallic coating to the dielectric carrier material.
If it designs in this way, it turns out in the cost surface that it is
efficient.

[0010]
Although it is needless to say, generally it is desirable to have a converter to
the general waveguide interface from the transmission line.
[0011]
Thomas J. Mueller [ in / case / where it is related with a surface installation
type waveguide / special / the 33rd Europe microwave science council (European
Microwave Conference) of 2003 Munich ] (Thomas J Muller), a ville -- Fleet glove
hair (Wilfried Grabherr) -- Bernd ADERUSUEKKU (Bernd) "The paper by Adelseck
Surface-mountable metalized plastic waveguide filter suitable for high volume
production. (Metallic coating plastic waveguide filter suitable for mass
production in which surface installation is possible) " -- it has disclosed.
Here, it constitutes so that the waveguide in which surface installation is
possible may be installed in what is called a footprint on a circuit board. The
microstrip conductor-waveguide transformation part is disclosed and the end of a
microstrip conductor functions as a probe for feeding to the opening of a
waveguide. The microstrip conductor is in contact with the waveguide via the
stair-like ridge, and this stair-like ridge consistents with the impedance in a
converter. The boundary of a conversion area is formed by the via hole.
[0012]
Also in the design concerning the above-mentioned paper, since the via hole
which defined the electric wall surface which a loss arises because a micro
stripe probe is in a circuit board, and penetrates a circuit board is required,
there is the same problem as the general converter to the waveguide interface
from the transmission line.
[0013]
Therefore, a loss is low and the waveguide composition provided with the
transmission-line-waveguide transformation part of a simpler design with the low
price is needed.
[Summary of Invention]
[0014]
A loss is low, and is a low price and the object of this invention has it in
providing the waveguide composition provided with the transmission-line-
waveguide transformation part of a simpler design.
[0015]
This problem is solved by the above-mentioned waveguide composition. This
composition is further provided with the sensing element which a periphery
equips with the boundary contact portion which was along in bordering form
intrinsically except a gap. A gap divides a boundary contact portion (13) in the
place facing the end of the transmission lead. A sensing element is further
provided with the conductor contacting part which projects from a boundary
contact portion and passes along a gap so that the end of a transmission lead
may be contacted toward a boundary contact portion from a transmission lead and
it may be extended to an opening (6).
[0016]
According to the suitable embodiment, the grounding metallic coating of the 2nd
main surface shall contact the waveguide section installed in the converter. The
grounding metallic coating of the 2nd main surface shall support a waveguide
flange.
[0017]
According to other suitable embodiments, a dielectric carrier material consists
of one dielectric layer, and the transmission line is a microstrip conductor or
a coplanar conductor.
[0018]
According to other suitable embodiments, a dielectric carrier material is
provided with at least two dielectric carrier layers, and the transmission line
is stripline conductors.
[0019]
According to other suitable embodiments, a sensing element has the opening
structures which turned to the outside of the opening when the sensing element
was installed in dielectric carrier material composition, and opening structures
are covered with a lid.

[0020]
For example, the present invention provides many effects so that it may list to
below.
A point without the necessity for **PUROBU
The point considered as one composition which consists of a converter combining
the **MAI crossed lip waveguide transformer and the waveguide bend
The point that losses are reduced because there are no dielectric materials in
the opening of - waveguide
The point that the region which a converter occupies in - dielectric-materials
composition is very small
The point which can raise the accuracy of soldering alignment since it is
possible to double a converter with - boundary pattern
[0021]
[Drawing 1]The perspective diagram of the dielectric carrier constituted in the
present invention is shown.
[Fig.2 a] The plan of the converter concerning the present invention is shown.
[Fig.2 b] The side view of the converter concerning the present invention is
shown.
[Drawing 3]The 1st type of a waveguide section used with the present invention
is shown.
[Fig.4 a] The bottom view of the 2nd type of a waveguide section used with the
[Fig.4 b] The side view of the 2nd type of a waveguide section used with the
[Fig.4 c] The end elevation of the 2nd type of a waveguide section that is
installed in a dielectric carrier material and that is used with the present
invention is shown.
[Fig.4 d] The side view of the 2nd type of a waveguide section used with the
present invention installed in a dielectric carrier material is shown.
[Drawing 5]The upper surface perspective diagram of the example of change of the
dielectric carrier for the present invention is shown.
[Drawing 6]The plan of the example of the 1st change of the converter concerning
[Drawing 7]The plan of the example of the 2nd change of the converter concerning
[Fig.8 a] The side view of the example of the 3rd change of the converter
concerning the present invention which was adapted for stripline composition is
shown.
[Fig.8 b] The side view of the example of the 3rd change of the converter
concerning the present invention installed in the stripline is shown.
[Fig.8 c] The plan of the stripline composition concerning the example of the
3rd change of the converter concerning the present invention is shown.
[Drawing 9]The side view of the example of change of the converter concerning
[Description of Embodiments]
[0022]
Here, a description detailed about the present invention is performed, referring
to an accompanying drawing.
[0023]
The dielectric carrier material 1 is shown in the Fig.1 in which the example of
a 1st embodiment of the present invention was shown. The dielectric carrier
material 1 has the 1st main surface 2 and the 2nd main surface 3, and both sides
have given metallic copper covering preliminarily. Copper of the 2nd main
surface 3 is used as a contact surface, and copper of the 1st main surface 2
etches and forms a desired copper pattern in the 1st main surface 2. This copper
pattern forms microwave circuit layouts which shall be soldered to a dielectric
carrier, such as a micro stripe transmission lead and a footprint (not shown),
for example.
[0024]
In [ the converter 4 is formed in the 1st main surface 2 of the dielectric
carrier 1 as what is used for the conversion to a waveguide section (not shown
in Fig.1) from the micro stripe transmission lead 5 which spreads in the 1st
main surface 2, and ] the plane of a dielectric carrier, A waveguide port is

formed in 90 direction to the direction in which the micro stripe transmission
lead 5 was extended perpendicularly. The converter 4 is intrinsically provided
with the opening 6 which carried out the rectangular form. The opening 6 has the
1st edge 7, the 2nd edge 8, the 3rd edge 9, and the 4th edge 10, and the angle
is slightly round by the manufacturing method reason. The edges 7, 8, 9, and 10
have turned to the inside of the opening 6. 10 [ page / 4th ] faces the
direction containing the microstrip conductor 5.
[0025]
The converter 4 is provided with the boundary 11 of copper with a certain width
along with the verges of opening 7, 8, 9, and 10. The boundary 11 is
electrically connected to the contact surface of the 2nd main surface 3 via the
copper coating of the verges of opening 7, 8, 9, and 10. although the microstrip
conductor 5 is extended toward the boundary 11 in this embodiment -- some of
boundaries 11 -- it has finished with this side and has not carried out electric
contact.
[0026]
Fig.2 a and Fig.2 b are referred to. According to the present invention, in
order to perform microstrip conductor-waveguide transformation, waveguide
transformation composition is provided with the sensing element 12 which shall
be installed in the boundary 11. The sensing element 12 has the boundary contact
portion 13 which was along the form of the boundary 11 intrinsically except gap
14. When the gap 14 installs the sensing element 12 in the boundary 11, it
divides the boundary contact portion 13 in the place facing the end of the
microstrip conductor 5. Therefore, the boundary contact portion 13 is provided
with the 1st wall surface 15, the 2nd wall surface 16, the 3rd wall surface 17,
and the 4th wall surface 18, When it installs in the boundary 11, the 4th wall
surface 18 of a boundary contact portion faces the 4th edge 10 of the opening 6,
the 2nd wall surface 16 is an opposite side of the 4th wall surface 18, and
there is the gap 14 in the center of the 4th wall surface 18.
[0027]
If the sensing element 12 is installed in the boundary 11, the 1st continuation
surface 19 will be set that the wall surfaces 15, 16, 17, and 18 face a
boundary, and it will be determined that the 2nd continuation surface 20 turns
to the bordering outside.
[0028]
The sensing element 12 is further provided with the conductor contacting part 21
which projects from the center of the 2nd wall surface 16, and passes along the
gap 14. If the sensing element 12 is installed in the boundary 11, the conductor
contacting part 21 will contact the end of the microstrip conductor 5.
[0029]
The conductor contacting part 21 has height vertical to the main extension of
the 2nd wall surface 16, and width is equivalent to the width of the microstrip
conductor 5.
[0030]
The following is related when the sensing element 12 is installed in the
boundary 11. The conductor contacting part 21 has the contact portion 21a it was
made to serve as the same height as the microstrip conductor 5. This height is
intrinsically the same as the height of the Table 1 surface 19. Then, there is
the tension upper part 21b stretched to the dielectric carrier 1 so that the
boundary 11 may not be contacted, so that the dielectric carrier 1 may not be
contacted that is,. Then, there is the stair-like part 21c provided with the
level difference extended to the opening 6 exceeding the height of the Table 1
surface 19.
[0031]
The surface 22 of the conductor contacting part 21 of the opposite side of a
surface in contact with a microstrip conductor has height the same as the Table
2 surface 20.
[0032]
By this technical field, it is well-known to use such a stair-like structure for
a micro stripe waveguide transformation part, and it does not describe it in
details any more here.
[0033]
Fig.3 shows an example of the 1st type of the waveguide section 23 installed in
the conversion composition concerning the present invention. Such a waveguide

section comprises the waveguide flange 24 installed in the 2nd main surface 3 of
the dielectric carrier 1, and the waveguide tube 25 extended to the outside of
the dielectric carrier 1. The waveguide tube 25 is cleared for a description and
illustrated. The waveguide section 23 serves as a cavity which has the section
hole 26. The section hole 26 has a size depending on the frequency to which it
was presupposed that the waveguide section 23 is used. It has illustrated as the
flange 24 is installed in the opening 6 (not shown in Fig.3) in the dielectric
materials 1. The opening 6 forms [ three ] the waveguide contact interface,
i.e., a waveguide port, in the 2nd page of the dielectric carrier 1. The size of
the opening 6 corresponds to the section hole 26 of a waveguide. The sensing
element 12 is installed in the boundary as mentioned above (not shown).
[0034]
a-4 d of Fig.4 shows the 2nd type of the waveguide section installed in the
conversion composition concerning the present invention. Here, the surface
installation type waveguide section 27 installed in the 2nd main surface 3 of
the dielectric carrier 2 is used instead. The surface installation type
waveguide section 27 comprises the opening waveguide tube 28 which 28 d of page
[ 1st ] of occlusion wall surfaces opened wide only by three, 28a, 28b, and 28c.
There is the interface part 29 which shall be installed in a waveguide port in
the tube 28, and it functions as a flange. It has turned at 90 degrees of
waveguide tubes 28 immediately after the interface part 29, and they are
installed in the 2nd main surface of a dielectric carrier. The stair-like part
is provided by well-known technology by the interface part 29. If the 2nd type
27 of a waveguide section is installed in the 2nd main surface 3 of the
dielectric carrier 1, 28 d of effective areas will close. Since it is unrelated
to the present invention about other functions of the waveguide tube 28, the
waveguide tube 28 has restricted the extension range with the broken line.
[0035]
If installing it, the waveguide tube 28 of the 2nd waveguide section will serve
as a cavity which has the section hole 30. The section hole 30 has a size
depending on the frequency to which it was presupposed that the waveguide
section 23 is used. The interface part 29 is installed in the opening 6 (not
shown in Fig.4 d) in the dielectric materials 1. The opening 6 forms [ three ]
the waveguide contact interface, i.e., a waveguide port, in the 2nd page of the
dielectric carrier 1. The size of the opening 6 corresponds to the section hole
of a waveguide. Installation is carried out if it is along an opening waveguide
tube, and it is performed using ******** 31.
[0036]
Such a surface installation type waveguide section is a thing of the well-known
from the former, and suppose that the details are not described any longer here.
[0037]
The present invention is not limited to an above-mentioned embodiment, and can
be freely changed within the category in attached Claims.
[0038]
For example, if Fig.5 is referred to, it is able to provide the gap 32 which
communicates one in the boundary contact portion 13 of a sensing element as the
bordering example 11' of change, and for the example 5' of change of a
microstrip conductor to pass through a boundary, and to make it to finish just
before the 4th edge 10 of the opening 6. Thus, by changing the form of the
conductor contacting part of a sensing element, it becomes unnecessary to
lengthen to a boundary and can shorten more.
[0039]
If Fig.2 a is referred to and the sensing element 12 will be installed in the
dielectric carrier material 1, the opening structures 33 which turned to the
outside of the opening in the dielectric carrier 1 in the inner boundary of the
Table 2 surface 20 will be made. If the Fig.6 in which the plan of another
example 12' of a change design of a sensing element was shown is referred to, it
is possible to cover these opening structures using the electrical conduction
lid 34 which covers opening structures suitably without contacting the conductor
contacting part 21'. By this, the quantity of the microwave radiation which
escapes from opening structures can be decreased.
[0040]
Since boundary contact portion 13'' is largely made if the Fig.7 in which

another plan of example of change design 12'' of the sensing element was shown
is referred to, opening structures were lost and the necessity for a lid has
been lost.
[0041]
About above-mentioned installation, although it is preferable to carry out with
soldering, needless to say that some are possible otherwise, adhering with
electrical conduction adhesives is also possible.
[0042]
About a sensing element, it may create by one component or may create by a
plurality of components. In the case of the latter, all components should be
contacted electrically.
[0043]
Although the opening which corresponded to the section hole of the waveguide
intrinsically cannot be overemphasized, it is made consistent with the form of
the waveguide to be used. Therefore, in using a circular waveguide, let the
opening be a circular thing. The more change produces the form of an opening,
and the form of the section hole of a waveguide to be used also with a
manufacturing method and an opening becomes small, the more the radius of the
round angle is enlarged. All related parts, such as a sensing element and a
boundary, serve as a form corresponding to it.
[0044]
For example, the disclosed waveguide provided with the sensing element which can
be made into metal or the product made from a metallic coating plastic, It is
only two examples in various waveguide sections which can be used with the
present invention, and the present invention is not what equipped itself with
some special waveguide sections, and only interacts with a waveguide section.
[0045]
For example, about sizes with a described exact portion, such as the number of
the level differences of a stair-like part, and a size of a level difference, it
is dependent on the frequency to be used and the characteristic which a design
has. About such details, it is not a part of present invention, but is matter of
design by a person skilled in the art. The essence of the present invention is
using a sensing element for transmission-line-waveguide transformation, and is
making the opening in a dielectric carrier usable and releasing from the
numerousness of losses of a via hole and the dielectric materials in a waveguide
transformation part.
[0046]
As long as a micro stripe type, a stripline type, a coplanar mold, etc. are
suitable, what kind of thing may be sufficient as the transmission line. a
stripline -- a waveguide -- using -- a sensing element -- change -- a design --
an example -- 12 -- ' -- ' -- ' -- having been shown -- Fig.8 -- a -- referring
to it -- if -- a sensing element -- a conductor contacting part -- 21 -- ' -- '
-- ' -- a stripline -- ** -- having changed -- a contact portion -- 21 -- a -- '
-- ' -- ' -- having -- **** . Reference of Fig.8 b has shown the section which
crosses the opening 35 in the stripline composition 36 which installs sensing-
element 12'''. Stripline composition is provided with the following.
The 1st dielectric carrier material 37.
The 2nd dielectric carrier material 38.
The conductor 39 pinched among the dielectric carrier materials 37 and 38.
[0047]
Conductor contacting part 21''' of a sensing element is extended over the 1st
dielectric carrier material 37, and it is made to have contacted the conductor
39. Therefore, there is the access opening section 40 through the 1st dielectric
carrier material 37, and contact portion 21a''' can reach the conductor 39.
Fig.8 c shows the plan of the stripline composition 36 without sensing-element
12'''.
[0048]
Stripline composition further equips with the copper contact surfaces 41 and 42
the surfaces 37 and 38 of the dielectric carrier material which turned to the
outside of the conductor 39. To the opening 35, copper coating is performed so
that a contact surface may contact electrically.
[0049]
In all the embodiments, if suitable, it is also possible to use what kind of

metal and alloy for a conductive part. Although reference was made about copper,
there is other silver metallurgy as an example of suitable metal.
[0050]
Although all the conducting structures in a dielectric carrier material are
suitably created by etching, processing of others, such as screen printing, is
also considered.
[0051]
The dielectric carrier material 1 shall constitute dielectric-materials
composition from having some dielectric materials. Also in multilayered
constitution of a dielectric carrier, such as stripline composition provided
with two dielectric carrier materials, this dielectric carrier material
composition has the 1st main surface and the 2nd main surface too. These main
surfaces are the surfaces which do not adjoin other surfaces, i.e., the surface
to which it turned to the outside of dielectric carrier material composition.
For example, in the case of an above-mentioned stripline, surfaces with a
contact surface are the 1st main surface and the 2nd main surface.
[0052]
The case of a stripline, etc. double a waveguide transformation element with the
place where the conductor was embedded as mentioned above.
[0053]
If the copper coating in the verges of opening 7, 8, 9, and 10 is suitable, it
can also be constituted from what kind of conductor.
[0054]
Though a design may become less simple if suitable, it cannot be overemphasized
that the boundary 11 may electrically be connected to the contact surface of the
2nd main surface 3 using what kind of means other than metallic coating, such as
using bias, for example.
[0055]
As example of change of sensing element 12'''', as shown in Fig.9, it is also
possible to replace stair-like structure with the continuation structure 43 of
an arch.
[0056]
As long as the conductive part is suitable especially on a contact surface and a
boundary, it may be what kind of form. The boundary must be what was along the
opening, and if the contact surface is suitable, it is good as any grounding
metallic coating. A boundary is electrically connected to the grounding metallic
coating of the 2nd main surface by electrical conduction covering of the above-
mentioned edge.
Next
Representative drawing 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
JP,2006-148206,A
PAJ
Detail
Image
CLAIMS
TECHNICAL FIELD
PRIOR ART
TECHNICAL PROBLEM
MEANS

DRAWINGS
* NOTICES *
[0001]
This invention relates to the conversion circuit which connects a waveguide and
a microwave transmission line.
[0002]
After attaining reduction of insertion loss, in order to be able to attain
simplification of industrial work nature, A part of dielectric substrate is
stored in ridge waveguide, and what piles up the joint ridge part of a
microstrip line and ridge waveguide, and was connected is already disclosed (for
example, see Patent Document 1.).
[0003]
[Patent document 1] JP,H5-83014,A (Fig. 1)
[Description of the Invention]
[0004]
The composition of the conventional converter was constituted considering the
earth conductor surface of a microstrip line, and one bottom surface of a
waveguide as the same surface. For this reason, there is the necessity of
manufacturing the metal carrier and ridge waveguide holding a dielectric
substrate as one structure, When there was a problem that a metal carrier
enlarges and a metal carrier and a waveguide were made into another structure
even if, the gap arose in the two above-mentioned structures, and there was a
problem of the characteristic degradation by the increase in the insertion loss
by the positional displacement of two structures.
[0005]
it is what was made in order that this invention might solve the above problems
-- manufacture -- it aims at obtaining the conversion circuit of composition of
that ridge waveguide is connected in the extension direction of an easy
microstrip line.
[0006]
The metal carrier holding the microstrip line where the conversion circuit of
this invention was formed on the dielectric substrate, The ridge waveguide which
makes the side surface of the above-mentioned metal carrier the part of a tube
wall, extends to the above-mentioned microstrip line and a vertical downward
direction, and is bent in the above-mentioned microstrip line and the direction
on the bottom surface of the above-mentioned metal carrier, In the back short
waveguide side which is combined with the above-mentioned ridge waveguide, and
has the length of the wavelength of an abbreviated quarter, and it extends to
the above-mentioned microstrip line and vertical above, and the above-mentioned
back short waveguide side of the above-mentioned ridge waveguide, It has the
form which excised the whole surface of the triangular prism circularly, extends
in the above-mentioned microstrip line direction, and provides the projection
part connected to the above-mentioned microstrip line by the metallic conductor.
[0007]
The ridge part of a microstrip line and ridge waveguide is not contacted, and
there is little insertion loss also in the composition using a metal carrier,
and it is small, and effective in the conversion circuit in which it is stable
and a transmission direction is the same being realizable to a temperature
change.
[Best Mode of Carrying Out the Invention]

[0008]
Embodiment 1.
Fig.1 is a configuration diagram of a conversion circuit showing this embodiment
of the invention 1, and Fig.1 (a) is an enlarged drawing of a projection part
with which connect a transverse-plane central section configuration diagram and
Fig.1 (b) to an upper surface section configuration diagram, Fig.1 (c) is
connected to the side surface configuration diagram of ridge waveguide, and
Fig.1 (d) is connected to the ridge part of ridge waveguide.
[0009]
It is constituted from the microstrip line 2 by the converter which contacts the
ridge part 5a of the ridge waveguide 4 to the microstrip line 2 formed on the
dielectric substrate 1 as a circuit converted to the ridge waveguide 4.
[0010]
It is the microstrip line where 1 was formed in the dielectric substrate and 2
was formed on the dielectric substrate 1 in Fig.1. 3 is a metal carrier holding
the dielectric substrate 1, 4 is ridge waveguide, and 5a is a ridge part which
constitutes the ridge waveguide 4. 5b is a wall surface which constitutes the
ridge waveguide 4, and 6 is a back short waveguide which has the length of the
abbreviated quarter wavelength of the ridge waveguide 4 extended from the end on
the connection side of the microstrip line 2. It is a connecting face with a
ridge end [ in / the projection part in which 7a has the cylindrical surface
connected to the ridge end on the microstrip line 2 side of the ridge waveguide
4, and 8 can be set to a metallic conductor, and / in 9 / the above-mentioned
projection part 8a ].
[0011]
Invention of embodiment 1 relates to the conversion circuit which connects the
ridge waveguide 4 used for high frequency transmission of microwave, a
millimeter wave, etc., and the microstrip line 2 formed in the dielectric
substrate 1, It has composition which mounts the dielectric substrate 1 on the
metal carrier 3 as the object of constituting the microwave circuit etc. which
are constituted by connection of a plurality of dielectric substrates 1, or
breakage prevention of the dielectric substrate 1 by the difference between the
coefficient of linear expansion of the dielectric substrate 1, and the
coefficient of linear expansion of a mounting metal structure.
[0012]
In the conversion circuit constituted in this way, it describes about the case
where microwave is input from the microstrip line 2.
[0013]
Fig.2 is an electric-field-distribution figure in the section of the
transmission line, Fig.2 (a) shows the electric field distribution in a
microstrip line, and Fig.2 (b) shows the electric field distribution in the
section of ridge waveguide, it is in it, and 10a and 10b of an electric field
vector, and 1-3, 5a and 5b are the same as that of the description of Fig.1.
[0014]
In Fig.2, the solid line 10a and the dashed line 10b express the electric field
vector, and a solid line is a portion in which electric field are especially
strong.
The micro stripe transmission line is the transmission line which has electric
field distribution strong between the microstrip line 2 and the metal carrier 3
which were formed on the dielectric substrate 1, and the ridge waveguide 4 is
the transmission line which has electric field strong between the ridge part 5
and its waveguide wall surface which opposes.
[0015]
For this reason, in the point of the ridge part 5, they are the microstrip line
2 and a track which has electric field vertical to a conductor similarly.
The microwave which spreads the metallic conductor 8 is the transmission line
which can think as the microstrip line 2 formed on the equivalent dielectric
substrate 1 which comprises the dielectric substrate 1 and an air layer, and
connects two track structures for the microstrip line 2 and the ridge waveguide
4 smoothly.
[0016]
One constructional example of the flection of the low-loss ridge waveguide which
Fig.3 is a 1 configuration-example figure of a ridge waveguide flection, and its
cross sectional view, and is generally used to Fig.3 (a), The A-A'-A" cross

sectional view of the above-mentioned Fig.3 (a) is shown in Fig.3 (b), 11 is a
cutting plane line of a ridge waveguide flection, and 5a and 5b are the same as
the description of Fig.1.
[0017]
The flection of the ridge waveguide 4 is constituted using the ridge part 5
which has a curved surface, in order to improve a reflection property.
The constructional example which provides the pars obliqua is on the wall
surface of the structure which provides Bend on the wall surface of the ridge
waveguide 4 as a structure of other flections, and the ridge part 5 or the ridge
waveguide 4.
Since there is a close resemblance between the projection part 7a and the
structure which cut the flection of the ridge waveguide 4 of Fig.3 (b) by the
line 11, it is a low-loss structure like the flection 5 of the ridge waveguide
4.
[0018]
By the above, the microwave input from the microstrip line 2 via the metallic
conductor 8, Since it transmits to the projection part 7a projected in the
direction of a microstrip line from the end of the ridge part 5 smoothly and
transmission to above [ of the projection part 7a ] has the back short waveguide
6 of the abbreviated quarter wavelength of high impedance, it has the microstrip
line 2 and substantially identical impedance. It is transmitted to the ridge
waveguide 4 which makes the wall surface of the metal carrier 3 the part of a
waveguide wall surface.
The ridge waveguide which has a flection on the bottom surface of the metal
carrier 3 changes direction in the extension direction of the microstrip line 2
again in a transmission direction.
[0019]
By having the above composition, the lower part of the microstrip line 2, It is
effective in becoming possible to consider the strong electric field part of the
projection part 7a and the ridge waveguide 4 as continuation, and becoming
possible to obtain a conversion circuit with same transmission direction with
little insertion loss also in the composition using the metal carrier 3.
[0020]
In the case where applied to the big environment of the temperature change and
the dielectric substrates 1, such as a ceramic substrate, are used since it has
non-contact composition of the dielectric substrate 1 and the ridge part 5 of
the ridge waveguide 4, It is effective in it being lost that the dielectric
substrate 1 is damaged according to the coefficient-of-linear-expansion
difference of the ridge part 5 connected to the microstrip line 2 and the
dielectric substrate 1.
[0021]
Although it has composition which uses the metal carrier 3 of one sheet in
embodiment 1, it cannot be overemphasized that an effect also with same
composition using a plurality of metal carriers 3 is acquired.
[0022]
Although the flection of the ridge waveguide 4 is used as the bottom surface of
the metal carrier 3, even if it is the composition that the flection of the
ridge waveguide 4 is not a bottom surface of the metal carrier 3, it cannot be
overemphasized that the same effect is acquired.
[0023]
Embodiment 2.
Fig.4 is a configuration diagram of a conversion circuit showing embodiment 2,
and the projection part of triangle pole shape and 9 of 7b are the same as that
of the description of Fig.1.
It constitutes from the surface 9 in contact with the ridge part 5a of the ridge
waveguide 4 using the projection part 7b of a triangular prism.
[0024]
Although it was a case where a conversion circuit was constituted using the
projection part 7a made into the form which has the cylindrical surface which
excised some cylindrical shapes from the triangular prism in embodiment 1, In
embodiment 2, the manufacturability of the projection part 7 can be improved by
constituting a conversion circuit using the projection part 7b of a triangular
prism.
[0025]

The manufacturability at the time of machining of the projection part 7b can be
improved, and when connecting the metallic conductor 8 to the projection part
7b, it is effective in the ability to obtain the strength which prevents damage
by the load added to the projection part 7b.
[0026]
Although it has composition which used the projection part 7b of the right-angle
2 equilateral triangular prism in embodiment 2, it cannot be overemphasized that
an effect also with any same triangular prism is acquired.
[0027]
Embodiment 3.
7c is a projection part of any hexahedron form, and 9 is the same as the
description of Fig.1.
It constitutes from the projection part 7c cut from the triangular prism in the
parallel [ to the surface 9 in contact with the ridge part 5a ] surface.
[0028]
In embodiment 1 thru/or embodiment 2, although it was a case where a conversion
circuit was constituted using the projection part 7a or 7b of pentahedron, in
embodiment 3, the manufacturability of the projection part 7 can be improved by
constituting a conversion circuit using the projection part 7c of any
hexahedron.
[0029]
The manufacturability at the time of machining of the projection part 7c can be
improved, and when connecting the metallic conductor 8 to the projection part
7c, it is effective in obtaining the strength which prevents damage by the load
added to the projection part 7c.
[0030]
Although it has composition using the projection part 7c cut in the parallel
[ to the surface 9 in contact with the ridge part 5a ] surface in embodiment 3,
even if it is any hexahedron whose cutting plane is not parallel, or the
hexahedron whose two triangular planes are not parallel, it cannot be
overemphasized that the same effect is acquired.
[0031]
Embodiment 4.
and 1-3, 5a, 7, and 8 are the same as the description of Fig.1.
[0032]
It is an enlarged drawing of the connection part of the microstrip line 2 and
the ridge waveguide 4, and width is wide in the connection part of the
microstrip line 2 and the ridge waveguide 4 at the turn of the ridge part 5a,
the metal carrier 3 holding a dielectric substrate, and the projection part 7.
[0033]
When width of the ridge part 5a is made wider than the width of the metal
carrier 3 holding a dielectric substrate, even if the fixed position of the
metal carrier 3 moves in the extension direction of the microstrip line 2 at the
time of an assembly, the positional relationship of the ridge part 5a and its
wall surface 5b of the ridge waveguide 4 which opposes becomes fixed.
[0034]
Since the characteristic impedance of the ridge waveguide 4 is determined by the
interval of the ridge part 5a and its wall surface 5b of ridge waveguide which
opposes, when the fixed position of the metal carrier 3 moves, the variation of
the characteristic impedance of the ridge waveguide 4 decreases.
[0035]
When width of the projection part 7 is made wider than the metal carrier 3, in
not managing severely process tolerance of the projection part 7 or the ridge
waveguide 4, the short circuit by contact occurs.
[0036]
By making wide width of the ridge part 5a, the metal carrier 3, and the
projection part 7 in order as mentioned above, the accuracy at the time of
processing and an assembly can be eased, and the manufacturability and assembly
nature of a conversion circuit can be improved.
[0037]
Although this embodiment 4 showed three relations, the ridge part 5a, the metal
carrier 3, and the projection part 7, when two relations are realized

respectively, it cannot be overemphasized that the effect that the
manufacturability of a conversion circuit and assembly nature improve is also
acquired.
[0038]
Embodiment 5.
Fig.7 is a configuration diagram of a conversion circuit showing this embodiment
of the invention 5, and 12 is ridge waveguide flection Bend and shows ridge
waveguide flection form.
[0039]
Although it was a case where it was right-angled and the flection provided by
the bottom surface of the carrier metal 3 of the ridge waveguide 4 was
constituted in embodiment 1, It becomes possible by using the flection 12 of
curved surface shape for the ridge countering waveguide wall surface of the
flection of the ridge waveguide 4, and constituting a conversion circuit to
improve the reflection property by the flection 12.
[0040]
By considering it as the flection 12 of the ridge waveguide 4 which has curved
surface shape on the wall surface of the ridge waveguide 4, it becomes possible
to reduce the reflected amount by bend of the ridge waveguide 4, and the effect
of reducing the insertion loss of a conversion circuit is acquired.
[0041]
When the same curved surface shape as the ridge waveguide 4 is also given to the
metal carrier 3, it cannot be overemphasized that the same effect is acquired.
[0042]
Embodiment 6.
13 is a ridge waveguide flection ridge bend, 5a is the same as the description
of Fig.1, and ridge waveguide flection form is shown.
[0043]
Although it was a case where used the flection 12 of curved surface shape for
the ridge countering waveguide wall surface of the flection of the ridge
waveguide 4, and a conversion circuit was constituted in embodiment 5, In
embodiment 6, a right-angled flection is used for the ridge part 5a of the
flection of the ridge waveguide 4, and it becomes possible by constituting a
conversion circuit from a slanting part on the wall surface 13 of the flection
of the ridge waveguide 4 to improve the reflection property by a flection.
[0044]
A right-angled flection is used for the ridge part 5a of the flection of the
ridge waveguide 4, it becomes possible to reduce the reflected amount by a
flection by constituting a conversion circuit from the slanting part 13 on the
wall surface of the flection of the ridge waveguide 4, and the effect of
reducing the insertion loss of a conversion circuit is acquired.
[0045]
The effect of preventing change of the impedance by the curved-surface gap with
the metal carrier 3 and the ridge waveguide 4 in the flection of the ridge
waveguide 4 is also acquired.
[0046]
Embodiment 7.
and 14 is a back short waveguide which has flex shape.
[0047]
Although back short 6 portion of the high impedance connected to the ridge
waveguide 4 was considered as the composition extended in the direction
orthogonal to the microstrip line 2 in embodiment 1 - embodiment 6, In
embodiment 7, it becomes possible by providing a flection for the back short
circuit 6 to oppress the height of a conversion circuit.
[0048]
A flection is provided for the back short circuit 6 connected to the ridge
waveguide 4, it becomes possible to make the height of the back short circuit 6
low by changing for extensions in the direction of the waveguide 7 by the back
short circuit 14 which has flex shape, and the effect that a thin conversion
circuit is realizable is acquired.
[0049]
Embodiment 8.

Fig.10 is a conversion circuit which shows embodiment 8, 15 is a rectangular
waveguide and 1-3, 5a, 6-8 are the same as the description of Fig.1.
[0050]
Fig.11 is a cross sectional view of the conversion circuit in this embodiment of
the invention 8, and Fig.11 (a) is a cross sectional view of B-B' shown in
Fig.10, a cross sectional view of C-C' which Fig.11 (b) shows to Fig.10, and a
cross sectional view of D-D' which shows Fig.11 (c) to Fig.10.
[0051]
Although it was a case where characteristic impedance values constituted the
conversion circuit of a microstrip line and ridge waveguide using the fixed
ridge waveguide 4, in embodiment 1 - embodiment 7, The circuit which is
considered as the composition which has a rectangular waveguide generally used
abundantly to the output of the ridge waveguide 4, and is converted to a
rectangular waveguide via ridge waveguide from a microstrip line can be
obtained.
In the figure, it is the composition using the ridge waveguide or the
rectangular waveguide which has a plurality of characteristic impedances.
[0052]
By changing ridge height, the ridge waveguide 4 can change a characteristic
impedance, when the rectangular waveguide 15 changes waveguide height.
Since a characteristic impedance becomes low as the interval d of a ridge part
and the waveguide wall surface which opposes becomes narrow specifically in the
ridge waveguide shown in (a) of Fig.11, it is possible by setting up the above-
mentioned interval suitably to obtain a desired characteristic impedance.
[0053]
Since a characteristic impedance becomes low as waveguide height b becomes low
in the rectangular waveguide shown in (c) of Fig.11, it is possible by setting
up the above-mentioned interval suitably to obtain a desired characteristic
impedance.
It is known that the characteristic impedance of the ridge waveguide which
provided the ridge part to the rectangular waveguide will become lower than the
characteristic impedance of the above-mentioned rectangular waveguide.
[0054]
By making each characteristic impedance of a plurality of transmission lines
into the value of suitable conditions, full consistency is made in center
frequency and the insertion loss of the transmission line is set to 0.
[0055]
In the case where the transmission line of the characteristic impedance Z1 and
the transmission line of the characteristic impedance Z2 are connected
specifically, It has one wave of length for abbreviated 4 minutes of center
frequency, and it can cross to a broadband and can make insertion loss for full
consistency to be carried out with center frequency, and be deteriorated with it
by inserting the transmission line of characteristic-impedance Zm denoted by the
formula 1 between the two above-mentioned transmission lines.
[0056]
[Mathematical formula 1]
000003
[0057]
It has composition which connects a rectangular waveguide to the output of the
ridge waveguide 4, and the effect of making the insertion loss of a converter
being deteriorated is acquired by setting up a plurality of characteristic
impedances suitably.
The effect of crossing to a broadband and making insertion loss being
deteriorated is also acquired by using a plurality of characteristic impedances.
[0058]
Embodiment 9.
16 is taper ridge waveguide and 17 is a taper rectangular waveguide.
[0059]
Although it was a case where a plurality of characteristic impedance values
constituted a conversion circuit using the ridge waveguide 4 or the rectangular

waveguide 15 which is a discrete value, in embodiment 8, In embodiment 9, it
becomes possible to cross to a broadband and to obtain the conversion circuit of
low insertion loss by using the taper ridge waveguide 16 or the taper
rectangular waveguide 17 which a characteristic impedance converts continuously.
[0060]
By using the taper ridge waveguide 16 which has a ridge part which changes to
the ridge waveguide 4 continuously, the characteristic impedance of the ridge
waveguide 4 can be changed continuously.
[0061]
The characteristic impedance of the rectangular waveguide 15 can be continuously
changed by using the taper rectangular waveguide 17 which has a waveguide from
which height changes to the rectangular waveguide 15 continuously.
[0062]
The effect that a characteristic impedance oppresses the reflection by the
discontinuity which changes steeply, crosses to a broadband, and constitutes the
conversion circuit of low insertion loss is acquired by changing the above-
mentioned characteristic impedance continuously.
[0063]
The effect of decreasing the shaving remaining part at the time of waveguide
processing which can become a change factor from the desired characteristic is
also acquired by applying taper composition.
[0064]
[Drawing 1]It is a configuration diagram of a conversion circuit showing this
embodiment of the invention 1.
[Drawing 2]It is an electric-field-distribution figure in the section of the
transmission line.
[Drawing 3]They are a 1 configuration-example figure of a ridge waveguide
flection, and its cross sectional view.
[Drawing 11]It is a cross sectional view of the conversion circuit in this
[Explanations of letters or numerals]
[0065]
1 A dielectric substrate, 2 microstrip lines, 3 metal carriers, 4 Ridge
waveguide, 5a ridge part, and the tube wall of 5b ridge waveguide, 6 back short
waveguide, seven projection parts, the projection part that has 7a cylindrical
surface, 7b The projection part of triangle pole shape, and 7c The projection
part of arbitrary hexahedron form, and 8 Metallic conductor, 9 A ridge
connecting face, 10 electric field vectors, and the cutting plane line of 11
ridge-waveguide flection, 12 The back short waveguide which has the wall surface
pars obliqua of Bend outside a ridge waveguide flection, and 13 ridge-waveguide
flection, and 14 flex shape, and 15 A rectangular waveguide and 16 Taper ridge
waveguide and 17 Taper rectangular waveguide.
drawing1

drawing2
drawing3
drawing4
drawing5
drawing6
drawing7
drawing8
PrevNext
Representative drawing 1 2 3 4 5 6 7 8 9 10 11 12
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JP,2006-005846,A
PAJ
Detail
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CLAIMS
TECHNICAL FIELD
PRIOR ART
TECHNICAL PROBLEM
MEANS
DRAWINGS
* NOTICES *
[0001]

This invention relates mainly to the conversion structure of the high frequency
transmission line in a microwave band and a millimeter wave belt, and relates to
the waveguide microstrip line converter which connects rectangular waveguide and
a microstrip line especially.
[0002]
As the transmission line of the high frequency signal in a microwave band and a
millimeter wave belt, rectangular waveguide and a microstrip line (following,
MSL) are used widely. Rectangular waveguide is used when transmitting a high
frequency signal to the antenna apparatus which has a case where low-loss [ of
the transmission line ] is searched for, and a rectangular waveguide interface.
MSL is used when a miniaturization is called for in the transmission line inside
apparatus. Rectangular waveguide and the converter of MSL are often needed and
are used.
[0003]
There are a thing of the structure connected as a connection form of rectangular
waveguide and MSL without changing each signal transmission direction and a
thing of structure which changes a transmission direction right-angled in a
connected part, and it is properly used by arrangement and structure of the
connection appliance.
[0004]
As the rectangular waveguide connected without changing a signal transmission
direction, and a converter of MSL, the prior art with a comparatively easy
structure is known. (For example, see nonpatent literature 1)
[0005]
[Nonpatent literature 1] Microstrip Lines and Slotlines Second
Edition,p43,Figure 1.28,Artech House
[0006]
The connection structure shown in the nonpatent literature 1 is once converted
to ridge waveguide form by attaching a taper type converter to the inside of
rectangular waveguide, After making the electric field distribution seen in the
waveguide section approximate to the electric field distribution seen in the MSL
section, a taper termination is connected to the line conductor of MSL, and the
high frequency signal to MSL is transmitted. A taper converter is good also as
lambda / a 4 multistage step converter (henceforth, step converter), and if the
form and dimension specifications of MSL are suitably set up also in which
converter, it is possible to suppress a reflection of a high frequency signal
low over a broadband.
[Description of the Invention]
[0007]
However, in the connection structure shown in the nonpatent literature 1, no
current of high frequency signals will flow into the MSL side in the connected
part of a taper converter and MSL, but a part of current will flow into a
rectangular waveguide outer surface further from the cutting plane of
rectangular waveguide along a taper end face. By this current, an unnecessary
wave is emitted to space from the break point of form, or there was a problem of
gathering a noise from the external world.
[0008]
It is made in order that this invention may solve the starting problem, and it
aims at suppressing the radiation of an unnecessary wave and mixing of the noise
from the external world in a waveguide microstrip line converter.
[0009]
The waveguide microstrip line converter by this invention,
A microstrip line, rectangular waveguide, and the conductor shorting bar with
which the line end of the aforementioned microstrip line arranged oppositely,
the end face of the aforementioned rectangular waveguide provided, and the
through hole was formed, While being attached to the inner surface of the
aforementioned rectangular waveguide and forming the step surface of multistage
in the opposite side of the clamp face to the rectangular waveguide concerned,
Between the terminal part of the aforementioned step converter and the line ends
of the aforementioned microstrip line is connected with the step converter with
which the height of the step surface of each stage and a clamp face becomes high

sequentially toward a terminal part, and it has a conductor pin arranged by
penetrating the through hole of the aforementioned conductor shorting bar.
The aforementioned microstrip line arranges the surface on the line conductor
side oppositely to the clamp-face side of the aforementioned step converter, and
the aforementioned conductor shorting bar carries out eccentricity of the medial
axis of the aforementioned through hole to the clamp-face side of the
aforementioned step converter to the medial axis of the aforementioned conductor
pin.
[0010]
According to this invention, the extraneous emission between a taper converter
and a microstrip line can be oppressed.
Since the electric field distribution of the transmission line from rectangular
waveguide to a microstrip line is maintainable to the distribution approximated
substantially, a reflection can be low suppressed over a broadband.
[Best Mode of Carrying Out the Invention]
[0011]
Embodiment 1.
Hereinafter, it describes about the embodiment 1 which starts this invention
using the figure.
Fig.1 is the figure showing the composition of the waveguide MSL converter by
embodiment 1, and (a) shows each electric field distribution [ in / (c) can be
set / in / in a side surface cross sectional view and (b) / the section AA / to
section BB, and / in (d) / section CC ]. Fig.2 is a plan showing the composition
of the coaxial MSL converter by embodiment 1.
[0012]
In the figure, the conductor chassis 8, the conductor cover 9, and the shorting
bar 10 constitute the rectangular waveguide 7. The step converter 6 is attached
at the inner surface of the rectangular waveguide 7 of the conductor cover 9 on
the propagating direction (the following, propagating direction) of the high
frequency signal in the rectangular waveguide 7, and the center line of the
conductor cover 9 which corresponds. The step converter 6 comprises a metal
plate molded into staircase shape, and the step surface of at least two or more
steps of multistage is provided. The example of the figure shows three steps of
step surfaces. The length of the propagating direction of each step is 1 of
abbreviated 4 minutes of the wavelength of using frequency. From the clamp face
of the rectangular waveguide 7, toward the terminal part (henceforth, final step
part) of the rectangular waveguide 7, the step converter 6 is arranged so that
the step surface may separate from the clamp face sequentially. That is, in a
final step part, the height from a clamp face to the step surface becomes the
highest, and it approaches most the inner surface of the rectangular waveguide 7
which faces a clamp face.
[0013]
The step converter 6 is providing the conductor pin 4 to the terminal surface
contiguous to the step surface in a final step part. The final step part of the
step converter 6 has a gap between the inner surfaces on the clamp-face side of
the rectangular waveguide 7. The penetrated through hole 5 is provided, and the
shorting bar 10 approaches the final step part of the step converter 6, and is
arranged in the terminal surface of the rectangular waveguide 7. The conductor
pin 4 penetrates the through hole 5 of the rectangular waveguide 7, and it is
arranged so that it may project in the specified quantity from the through hole
5. Positioning which is the conductor pin 4 and the through hole 5 has
accomplished the medial axis of the through hole 5 so that it may become the
position shifted to the specified quantity step converter clamp-face side to the
medial axis of the conductor pin 4. That is, the through hole 5 is an eccentric
hole to the conductor pin 4.
[0014]
In a facing-clamp face of step converter 6 of conductor chassis 8 surface, the
substrate 2 which constitutes MSL is attached so that the shorting bar 10 near
the shorting bar 10 may be touched. The line conductor 1 is provided on the
substrate 2, and the conductor pin 4 is connected to the terminal part of the
line conductor 1 with soldering etc. The earth conductor 3 is provided by the
back surface of the substrate 2. The earth conductor 3 is soldered to the
conductor chassis 7, and is completely fixed to the conductor chassis 8 by

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