Microwaves Explanation

1. MICROWAVE
• Classification
• What is microwave
• Ways of propagation
• Applications

3. RADIO
WAVES
MICRO
WAVES
INFRARED
WAVES

4. What is Microwave ?
An electromagnetic wave having frequency
b/w 1-300 GHz.
Properties :
They are unidirectional
They can be narrowly focused
The MW band is relatively wide(299 GHz).
Wider sub-bands can be assigned
Higher data rate possible

5. PROPAGATION
Ground Wave
propagation
Sky wave
propagation
LINE-OF-SIGHT

6. Microwave propagation is line-of-sight.
The towers have to be tall
OTHERWISE
Curvature Of Earth
Other obstacles (Buildings)

8. PARABOLIC ANTENNA
1
3
4
5
Based on Geometry of parabola
Every line || to the L.O.S
reflects off at curves
And intersect at a
common point called the
FOCUS
Unlike with single point
receiver, more signal can be
retrieved
2
Works like a funnel

9. HORN ANTENNAS
1
2
3
Looks similar to a giant scoop
Transmissions are
broadcast up a stem
And deflect outwards in
narrow || lines.
Received transmissions are
collected by the scoop
Then deflected down the stem
4
5

10. Used in
unicast
addressing
Wireless
LANs
Satellites
Cellular
phones
APPLICATIONS