Noise Considerations in Space Communication Antennas

Abstract

The receiver signal power in any space communication system is extremely low and hence the noise generated in the system plays a significant role in determining the signal-to-noise ratio of the system. Since the receiver noise can be brought down to a very low level by the use of parametric amplifier and maser, it has become necessary to design low noise antennas to obtain a better performance as far as the SNR is concerned. The various considerations which enter into the design of such low noise antennas are presented.