THREE-FREQUENCY FEED FOR QUASAT ANTENNA.

被引：0
|
作者：
Figlia, G. [1 ]
Klooster, K.V.T. [1 ]
Savini, D. [1 ]
机构：
[1] CSELT, Turin, Italy, CSELT, Turin, Italy
来源：
CSELT Technical Reports | 1988年 / 16卷 / 04期
关键词：
RADIO ASTRONOMY - RADIO TELESCOPES - SATELLITES - Observatories;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paper deals with a high performance coaxial feed designed, manufactured and optimized for the QUASAT radio telescope antenna (front-fed parabolic reflector). The main new feature of the feed is the simultaneous operation, with two orthogonal linearly polarized signals, at three frequency bands (1. 6, 5 and 22 GHz) having an extent between 15 PERCENT and 20 PERCENT. At each frequency band good pattern symmetry is obtained as well as a satisfatory VSWR performance is achieved by means of a new powerful synthesis procedure of waveguide matching networks. The feasibility study of the feed, the definition of an optimum reflector geometry and the optimization of the feed for the candidate configuration have been carried out in the frame of the ESTEC Contract No. 6242/85.
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页码：357 / 364
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