220GHz High Bit Rate Inter-Satellite Transmission System

A 220GHz communication system is designed and manufactured.For applications in space-distributed satellite networks, 5Gbps code rate level 100m communication is realized between satellites under THz carrier frequency.The system carrier frequency covers 210GHz to 230GHz. The baseband signal at the transmitter side is modulated directly on the carrier, multiplied and then mixed with the modulated signal before transmitting. At the receiving end, the signal is received by the antenna and output by the duplexer to a LNA, then down-converted to the IF unit after frequency doubling and harmonic mixer, and demodulated at IF to output the I/Q baseband signal to the signal processing unit.