Tuesday, November 2, 2010

Microwave Transmission System

Microwave Spectrum:
Range is approximately 1 GHz to 40 GHz
Total of all usable frequencies under 1 GHz gives a reference on the capacity of in the microwave range.
Components of a Microwave System:
1) Digital Modem.
2) Radio Frequency (RF) Unit.
3) Antenna.
Digital Modem:
The digital modem modulates the information signal.
(intermediate frequency or IF)
RF Unit:
IF is fed to the RF unit which is mounted as close physically to the antenna as possible.
(direct connect is optimal)
Waveguides are hollow channels of low-loss material used to direct the signal from the RF unit to the antenna.