Basic on Microwave

Basic on Microwave 

Difference between Radio wave & microwave:
1. Frequency- Radio wave -300KHz to 300 GHz
Microwave - 300 MHz to 300 GHz.
2. Microwave is a subset of radio wave.
3. Wavelength of microwave is less then radio wave.
4. Radio wave will cover longer distance than microwave.

Properties of microwave:
1. High Bandwidth.
2. Low interference.
3. High directivity & gain.
4. Impact of Ionosphere.
5. Line of Sight (সরাসরি)

Application of microwave:
1.Satellite
2. Radar
3. Microwave oven.

Microwave Advantage:
1. Narrow beam
2. High Frequency

Microwave Disadvantage:
1. Destroy nutrition
2. Line of sight

Difference between AC, DC & Microwave:
DC
Frequency 0
Time invariant

AC
Frequency 50 Hz - 60 Hz
time variant

Microwave
Frequency 300 MHz - 300 GHz
time variant
space variant

Microwave Transmission line & ordinary transmission line:
MTL
300 MHz to 300 GHz
Low wavelength
TE and TM mof present
Hollow wavelength: Rectangular Cylindrical.

OTL
50 Hz to 60 Hz
High wavelength
TEM mof
Tow point cable