| タイトル | Efficiency measurement techniques for calibration of a prototype 34-meter-diameter beam-waveguide antenna at 8.45 and 32 GHz |
| 著者（英） | Otoshi, Tom Y.; Franco, Manuel M.; Alvarez, Leon S.; Britcliffe, Michael J.; Stewart, Scott R.; Slobin, Stephen D. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.; NASA Headquarters |
| 発行日 | 1992-06-01 |
| 言語 | eng |
| 内容記述 | Efficiency measurements at 8.45 and 32 GHz (X and Ka bands, respectively) were carried out on the new 34 m 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 pct was measured; at 32 GHz, 44.89 pct was measured. |
| NASA分類 | ASTRONOMY |
| レポートNO | 92A46063 |
| 権利 | Copyright |
|
