Summary of radiation pattern measurements using the LES-7 lens and variable power dividing VPD feed network at 7.68 GHz
Abstract
A comparison between experimental and calculated radiation pattern data for a multiple-beam antenna is presented. The antenna consists of a waveguide lens aperture excited by a 19-element feed horn array and variable beamforming network. The pattern data presented vary from a narrow high-gain beam, equivalent to that of a steerable paraboloid, to the earth-coverage pattern of a wide coverage communication satellite. Also discussed are the results of the earth-coverage measurements when either one or two feeds are turned off so as to produce nulls in the earth-coverage pattern.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1975
- Bibcode:
- 1975STIN...7611335P
- Keywords:
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- Antenna Feeds;
- Antenna Radiation Patterns;
- Lens Antennas;
- Microwave Antennas;
- Communication Satellites;
- Steerable Antennas;
- Superhigh Frequencies;
- Communications and Radar