12-GHz -Band FM Receiver for Satellite Broadcasting

This paper describes the low-noise low-cost receiver for satellite broadcasting with new technology developed by us. The paper also describes the image recovery theory, the design principle of our downconverter, a frequency-stabilized local oscillator with bipolar transistors, the required limiting factor of a filter, the removing circuit of an energy dispersal signal, and a parabolic antenna for circularly polarized waves together with the performance of our device. The experimental results obtained through the Communication Technology Satellite (CTS) are also shown.