Beam Squint Compensation in Circularly Polarized Offset Reflector Antennas Using a Sequentially Rotated Focal-Plane Array

被引：17

作者：

Zamanifekri, A. ^{[1
]}

Smolders, A. B. ^{[1
]}

机构：

[1] Eindhoven Univ Technol, NL-5612 HB Eindhoven, Netherlands

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷

关键词：

Beam squinting; circular polarization; focal-plane array; offset-reflector antenna; FEEDS;

D O I：

10.1109/LAWP.2014.2386308

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：

The problem of beam squinting in circularly polarized offset reflector antennas is solved by using a novel focal-plane array concept that consists of sequentially rotated linearly polarized elements. This concept can be used to facilitate beam steering in full-duplex communication with satellite Internet (VSAT) operating in the Ka-band. A prototype consisting of a 75-cm offset dish illuminated by a 2 x 2 array of sequentially rotated aperture-coupled microstrip antennas was developed and tested at 20 GHz. Experimental results clearly demonstrate the removal of the beamsquint and resulted in an axial ratio (AR) below 1 dB within the 1-dB beamwidth of the main beam.

引用

页码：815 / 818

页数：4

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