Adaptive multibeam satellite communications using active array
Abstract
A multiple beam satellite communications system which can adaptively allocate communications capacity to each beam is proposed. Using an active array as a multibeam transmitting antenna, it becomes unnecessary to assume fixed transponders or a fixed transmission capacity to each beam, enabling the adaptive allocation of transmission capacity. In order to facilitate the beam forming network design, space-fed type array is adopted. Configuration of the array antenna with reflector is made to be the same as an ordinary offset multibeam antenna by using equal phase shift array elements. Also, in order to utilize the flexibility of the active array, a new interbeam exchange configuration using channel selecting unit and SAW bandpass filters is proposed.
- Publication:
-
14th Space Technology and Science Symposium
- Pub Date:
- 1984
- Bibcode:
- 1984spte.symp..793E
- Keywords:
-
- Adaptive Control;
- Antenna Arrays;
- Antenna Design;
- Multibeam Antennas;
- Reflector Antennas;
- Satellite Communication;
- Circular Polarization;
- Hardware;
- Phase Shift;
- Structural Members;
- Transmission Efficiency;
- Communications and Radar