Cross-Polarization Cancellation in an Offset Parabolic Reflector Antenna Using a Corrugated Matched Feed

被引：22

作者：

Sharma, S. B. ^{[1
]}

Pujara, Dhaval ^{[2
]}

Chakrabarty, S. B. ^{[1
]}

Dey, Ranajit ^{[1
]}

机构：

[1] ISRO, SAC, Antenna Syst Area, Ahmadabad 380015, Gujarat, India

[2] Nirma Univ, Inst Technol, Dept Elect & Commun Engn, Ahmadabad 382481, Gujarat, India

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2009年 / 8卷

关键词：

Corrugated horn; cross polarization; matched feed; offset reflector antenna; GLOBAL-EARTH COVERAGE; MULTIMODE HORN; LOW SIDELOBES;

D O I：

10.1109/LAWP.2009.2027913

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 letter presents the design of a dual-mode corrugated matched feed to cancel the unwanted high cross polarization and beam squinting in an offset parabolic reflector antenna. The matched feed concept has been implemented in a cylindrical corrugated structure by adding a higher order HE21 mode to the fundamental HE11 mode. The designed feed was then used to illuminate a linearly, as well as a circularly, polarized offset parabolic reflector antenna, and the secondary radiation patterns were computed. Significant improvement in the cross polarization was observed when the results were compared to that of a conventional corrugated horn illuminated offset reflector antenna.

引用

页码：861 / 864

页数：4

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