Cancellation of High Cross-polarization of an Offset Parabolic Reflector Antenna using a Rectangular Matched Feed

被引：5

作者：

Pujara, Dhaval ^{[1
]}

Chakrabarty, S. B. ^{[2
]}

机构：

[1] Nirma Univ, Dept Elect & Commun Engn, Inst Technol, Ahmadabad, Gujarat, India

[2] ISRO, Ctr Space Applicat, Antenna Syst Grp, Microwave Sensors Antenna Div,Antenna Syst Area, Ahmadabad 380053, Gujarat, India

来源：

IETE JOURNAL OF RESEARCH | 2012年 / 58卷 / 04期

关键词：

Cross-polarization; Matched feed; Monopulse tracking radar; Offset parabolic reflector antenna; Return-loss;

D O I：

10.4103/0377-2063.102312

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：

This paper presents the design and the experimental results of a dual-mode rectangular-matched feed. This type of feed cancels the unwanted high cross-polarization generated by the offset parabolic reflector antenna. In order to design this feed, higher order TE11 mode has been added in correct amplitude and phase with the fundamental TE01 mode in a rectangular structure. The proposed feed was then used as a primary feed to illuminate a linearly polarized offset parabolic reflector antenna. Through experimental results, it is verified that such a feed suppresses the undesired high cross-polarization introduced by the offset geometry of an offset reflector antenna. This kind of feed is very much suitable for monopulse tracking radar.

引用

页码：317 / 321

页数：5

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