SHAPED OFFSET-FED DUAL-REFLECTOR ANTENNA

被引：37

作者：

LEE, JJ ^{[1
]}

PARAD, LI ^{[1
]}

CHU, RS ^{[1
]}

机构：

[1] GTE SYLVANIA INC,EASTERN DIV,NEEDHAM,MA 02194

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1979年 / 27卷 / 02期

关键词：

D O I：

10.1109/TAP.1979.1142056

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A shaping scheme based on geometric optics for offset-fed dual-reflector antennas is presented. A ray tube emerging from a symmetric feed horn is transformed, after reflections, into a circular beam with a uniform phase and a prescribed radial power distribution on the aperture. In this scheme, Snell's law was not imposed on the main reflector. Based on this approximate solution, computer runs were taken for a 5.5-m dish baseline system, and very satisfactory results were obtained. The system so designed not only gives very low sidelobes but also provides a very high aperture efficiency. At 12 GHz an estimated 84 percent of aperture efficiency was achieved in spite of the severe constraint that the ray intersecting the edge of the main reflector meet a -10-dBi criterion. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：165 / 171

页数：7

共 8 条

[1] ELECTRICALLY SMALL CASSEGRAIN ANTENNA WITH OPTICALLY SHAPED REFLECTORS [J].