Citation
Abstract
Efficiency measurements at 8.45 and 32 GHz (X- and Ka-bands, respectively) have been carried out on the new 34-meter diameter beam waveguide antenna now in use at the NASA Goldstone Deep Space Communications Complex. The use of portable test packages enabled measurements at both the Cassegrain and beam waveguide focal points. Radio sources (quasars and Venus) were used as calibrators, and updated determinations of flux and source size correction were made during the period of the measurements. Gain and efficiency determinations as a function of elevation angle are presented, and the effects of the beam waveguide system and antenna structure are clearly seen. At the beam waveguide focus, an 8.45-GHz peak efficiency of 72.38 percent was measured; at 32 GHz, 44.89 percent was measured.
Details
- Volume
- 42-106
- Published
- August 15, 1991
- Pages
- 283–297
- File Size
- 635.5 KB