Focal region fields of dual reflector antennas
Abstract
A simplified analytical method to predict the field distribution in the focal region of dual reflector antennas having circular symmetry is presented. The method is used to study the field distribution at the subdish and in the focal plane, and hence the ability of the antenna in focusing the incident wave. Experimental results obtained on a 2.6-m spherical Gregorian reflector operating at 9.0 GHz agree well with theoretical ones.
- Publication:
-
IEEE Transactions on Antennas and Propagation
- Pub Date:
- May 1977
- DOI:
- Bibcode:
- 1977ITAP...25..392D
- Keywords:
-
- Antenna Design;
- Cassegrain Antennas;
- Directional Antennas;
- Electromagnetic Fields;
- Focusing;
- Parabolic Reflectors;
- Reflector Antennas;
- Amplitude Distribution Analysis;
- Current Distribution;
- Focal Plane Devices;
- Incident Radiation;
- Parabolic Antennas;
- Phase Shift;
- Communications and Radar