The application of single reflector multi-feed antennas to direct T.V. satellites
Abstract
It is shown that the antenna technique which associates a single offset reflector with a multi-element feed source, presently used in telecommunications satellites, is applicable to direct television broadcast satellites. The antenna design can be accurately modelled by a computer program, and presents no technical uncertainties. Measurements performed on the power distribution network and the radiating elements confirm design principles and performance predictions. The array geometry exhibits low cross-polarization errors, and RF sensing is used to eliminate beam pointing errors caused by residual variations of satellite attitude.
- Publication:
-
10th European Microwave Conference
- Pub Date:
- 1981
- Bibcode:
- 1981eumw.conf...90V
- Keywords:
-
- Antenna Arrays;
- Antenna Design;
- Antenna Feeds;
- Computer Aided Design;
- Microwave Antennas;
- Satellite Television;
- Computer Programs;
- Cross Polarization;
- Error Analysis;
- Performance Prediction;
- Pointing Control Systems;
- Reflectors;
- Steerable Antennas;
- Communications and Radar