Multi-beam satellite communication system

Abstract

Abstract PURPOSE:To allow the system to cope flexibly with traffic variation between beams by sharing transmission power to each beam according to the number of communication waves to each beam. CONSTITUTION:An active phased array antenna where each element has a power amplifier 7 is used as a transmission antenna to allow a beam shaping circuit 8 to irradiate a fixed multi-beam. The total transmission power of a satellite in this case is given as the sum of the transmission powers of each phased array element. Further, the transmission power to each beam is shared in correspondence to the number of communication waves to each beam. The assignment of a communication frequency to each beam is performed by a control station on the basis of the demmand from an earth station by taking the side lobe to each beam into consideration so as not to cause interference between beams in the same frequency.

Inventors

• 👤 Shunichiro Egami
• 👤 江上　俊一郎

Bibliographic Details