A dual doubly curved reflector antenna having good circular polarization characteristic
Abstract
A new type of shaped-beam radar antenna having good polarization characteristics is described. This antenna is composed of a dual doubly curved reflector system and a feed horn with good axial ratio, such as a dual-mode horn. The rotationally symmetrical beam of the feed horn can be converted into a shaped beam by the reflector system without degradation of the axial ratio. The design of this type antenna is discussed and the experimental results of a model antenna with a cosecant squared beam are shown. Integrated cancellation ratio of the model was 22 dB.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- May 1978
- DOI:
- 10.1109/TAP.1978.1141869
- Bibcode:
- 1978ITAP...26..455M
- Keywords:
-
- Horn Antennas;
- Polarization Characteristics;
- Radar Antennas;
- Radar Reflectors;
- Two Reflector Antennas;
- Antenna Design;
- Antenna Feeds;
- Cancellation;
- Circular Polarization;
- Curvature;
- Microwave Antennas;
- Radar Echoes;
- Communications and Radar