Reflector antennas with low sidelobes, low cross polarization, and high aperture efficiency
Abstract
Techniques are presented for computing the horn near field patterns on the subreflectors and for correcting the phase center errors of the horn pattern by shaping the subreflector surface. The diffraction pattern computations for scanned beams are described. The effects of dish aperture diffraction on pattern bandwidth are investigated. A model antenna consisting of a reflector, shaped subreflector, and corrugated feed horn is described.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- March 1984
- Bibcode:
- 1984STIN...8431464F
- Keywords:
-
- Antenna Design;
- Antenna Radiation Patterns;
- Computation;
- Design Analysis;
- Performance Tests;
- Reflector Antennas;
- Spacecraft Communication;
- Antenna Components;
- Antennas;
- Electronic Equipment;
- Fabrication;
- Near Fields;
- Communications and Radar