Citation
Abstract
In a previous article, theoretical and experimental results were presented for the performance of a pair of strut shields designed to reduce the ground scatter from 34-m beam-waveguide antenna struts at low elevation angle. While the motivation for adding these shields was reduction of the ground scatter during 7.2-GHz uplink operation at 80 kW, a beneficial reduction in antenna noise temperature was also realized at low elevation angles, as expected. In addition, a somewhat unexpected but beneficial reduction in antenna noise temperature near zenith was also observed. This led to the addition of a second set of shields on the two remaining struts and experimental measurement of the zenith ground scatter, as well as a second set of noise temperature data. These four-shield results are described in this article.
Keywords
Details
- Volume
- 42-201
- Published
- May 15, 2015
- Pages
- 1–8
- File Size
- 1.4 MB