Perspectives and development priorities of the information satellite systems

The main directions of the development of satellite communication systems, broadcasting and retransmission of information are considered. The main trend in the development of space telecommunications systems now is the transition to satellites using HTS (High throughput satellites) technology is shown. For modern HTS satellites the throughput is up to 100-150 Gbit/s, the projects of the next generation of HTS satellites will allow to increase the throughput several times. The determining factor for the bandwidth of the HTS satellites is the number of beams and the frequency band in the beam available for use. As the number of rays increases, their directional pattern needs to be reduced. Modern HTS satellites have 70-80 rays with a beamwidth of 0,4-0,7 degrees. The projected satellites will have 150-250 beams with a beamwidth of 0,2-0,3 degrees. So the capacity of the projected satellites will reach 0,5 Tbit/s, and in some projects even 1 Tbit/s. When implementing feeder links with central stations, this leads to the need to go to the V-band of radio frequencies...