The JPL 1.5-meter clear aperture antenna with 84.5 percent efficiency
Abstract
The theoretical and experimental study of a 1.5-meter offset dual shaped reflector at 31.4 GHz is detailed. An efficiency of 84.5 percent, a likely new record for reflector antennas, was ascertained through careful measurements. For larger low noise reflector systems, a 2- to 3-dB improvement in G/T performance over the state of the art ultra low noise ground stations and 90 percent or better aperture efficiency now appear feasible.
- Publication:
-
The Telecommunications and Data Acquisition Report
- Pub Date:
- May 1983
- Bibcode:
- 1983tdar.nasa....1C
- Keywords:
-
- Antenna Radiation Patterns;
- Ground Support Systems;
- Noise Temperature;
- Structural Design Criteria;
- Two Reflector Antennas;
- Angular Distribution;
- Design Analysis;
- Geometrical Optics;
- Numerical Analysis;
- Parallax;
- Performance Prediction;
- Snells Law;
- Communications and Radar