Filtering secondary mirror for a dual-band Cassegrain reflector antenna.
Abstract
A dual-frequency Cassegrain reflector antenna has been investigated in which the secondary mirror is constructed from a stack of waveguides. The secondary mirror behaves as a highpass filter, giving access to the prime-focus feed position at the higher-frequency band. The copolar and crosspolar radiation patterns are discussed.
- Publication:
-
Electronics Letters
- Pub Date:
- July 1976
- DOI:
- 10.1049/el:19760281
- Bibcode:
- 1976ElL....12..366L
- Keywords:
-
- Antenna Feeds;
- Antenna Radiation Patterns;
- Cassegrain Antennas;
- Microwave Antennas;
- Mirrors;
- Coplanarity;
- Microwave Filters;
- Polarization Characteristics;
- Signal Processing;
- Subreflectors;
- Waveguide Antennas;
- Communications and Radar