Multibeam TT&C and access integrated spaceborne communication system

In order to satisfy the requirements of satellite communication, on the basis of relay satellite system in China and abroad, an integrated of telemetry, track and command (TT & C) access in S-band is presented in this paper. RF beamforming is adopted in the antenna forward, and digital beamforming(DBF) is adopted in the backward antenna.The simulation results show that the forward effective isotropic radiated power(EIRP) and backward gain/temperature(G/T) of the scheme can meet the requirements of the system communication. The TT & C beam and access beam share part of the RF channel, and the digital signal is combined for processing. The integrated design goal is achieved. This scheme has the characteristics of high gain and flexibility, which provides a new solution for multi-user TT & C.