Elliptical offset Gregorian antenna for a transportable earth station
Abstract
New sidelobe regulations are being introduced for earth station antennas to allow closer satellite spacing. Conventional axisymmetric antennas can meet the lower sidelobe levels only with difficulty, and offset reflector systems are therefore receiving increasing attention. This paper describes an offset Gregorian antenna for transportable applications in the 11/14 GHz bands, designed to take advantage of an elliptical radiating aperture to reduce sidelobes preferentially in the plane of the geostationary orbit. A sophisticated profile optimization method is described which maximizes gain while keeping all sidelobes below a specified envelope.
- Publication:
-
GEC Journal Research
- Pub Date:
- 1984
- Bibcode:
- 1984GECJR...2..186H
- Keywords:
-
- Antenna Design;
- Earth Terminals;
- Land Mobile Satellite Service;
- Microwave Antennas;
- Mobile Communication Systems;
- Satellite Transmission;
- Two Reflector Antennas;
- Cassegrain Antennas;
- Communication Satellites;
- Optimization;
- Power Gain;
- Sidelobe Reduction;
- Transporter;
- Communications and Radar