Not will speak Thank you because i am also a learner !!

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2. OUTLINE OF THE PRESENTATION
 INTRODUCTION
 PLASMA
 CLASSIFICATION OF PLASMA
 PLASMA FREQUENCY
 PLASMA ANTENNA TECHNOLOGY
 WORKING PRINCIPLE OF PLASMA
ANTENNA
 PsiAN
 APPLICATIONS
 ADVANTAGES
 CONCLUSION
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3. INTRODUCTION
• Plasma Antenna is a special type of antenna in
which the metal conducting elements of a
conventional antenna are replaced by a
plasma.
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4. PLASMA
• This is the fourth state of matter similar to gas.
• It is identified by Sir William Crookes in 1879.
• Plasmas are conductive assemblies of charged
and neutral particles.
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5. CLASSIFICATION OF PLASMA
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6. PLASMA FREQUENCY
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the electron plasma frequency the ion plasma frequency
the plasma frequency:
as the electrons are so much lighter than ions
as the electrons are so much lighter than ions

7. PLASMA ANTENNA TECHNOLOGY
 It use ionized gas as conducting material .
 The gas is ionized only for the time of
transmission or reception.
 The design allows for extremely short pulses,
important to many forms of digital
communication and radars.
 Operates up to 90 GHz
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8. IONIZED GAS PLASMA ANTENNA
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9. WORKING PRINCIPLE
 When supply is given to the tube, the gas inside
it gets ionized to plasma.
 When plasma is highly energised, it behaves as
a conductor.
 Antenna generates a localised concentration of
plasma to form a plasma mirror that deflects RF
beam launched from a central feed located at
focus of mirror.
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10. WORKING PRINICIPLE FIGURE
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11. UNIQUE FEATURE OF PLASMA ANTENNA
 One fundamental feature of a plasma
antenna is that the gas ionizing process
 A second fundamental feature is that after
sending a pulse the plasma antenna can
be de-ionized.
 Selectable Multi beam
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12. PSiAn (Plasma Silicon Antenna)
• Plasma antenna up coming Technology is
PSiAn Launched in 2010.
• Based on silicon integrated circuits
technology.
• It contain number of diode on single silicon
chip.
• Its product cost does not increase with
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13. TRADITIONAL ANTENNA VS
PLASMA ANTENNA
- Unlike simple directional antennas, Plasma
Antennas’ selectable-beam avoiding the need for
manual or mechanical alignment and realignment
of fixed point-to-point communication links.
- Plasma Antennas provide similar advantages to
phased array antennas but at a fraction of the cost,
together with much wider bandwidth of operation.
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14. APPLICATIONS
 In highspeed digital communication and radar
system.
 In radio antenna.
 Stealth for millitary application.
 Used for transmission and modulation
techniques(PM,AM,FM).
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15. ADVANTAGES
 Higher Power
 Enhanced bandwidth
 Higher efficiency
 Lower noise
 Perfect reflector
 Low in weight
 Smaller in size
 Improved reliability
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16. CONCLUSION
 It is more advantageous than other antenna
due to ionized gas.
 Its action has many general with the dielectric
antenna action.
 It helps in pulse operation.
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17. REFERENCES
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www.wikipedia.org
www.seminaron.in
www.seminarelectronicstopic.com
www.techalone.com
www.authorstream.com

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