Terahertz Antenna System for a Near-Video-Rate Radar Imager

被引：36

作者：

Llombart, Nuria ^{[1
]}

Dengler, Robert J. ^{[2
]}

Cooper, Ken B. ^{[2
]}

机构：

[1] Univ Complutense Madrid, Dept Opt, E-28040 Madrid, Spain

[2] CALTECH, Jet Prop Lab, Pasadena, CA USA

来源：

IEEE ANTENNAS AND PROPAGATION MAGAZINE | 2010年 / 52卷 / 05期

基金：

美国国家航空航天局;

关键词：

Submillimeter wave antennas; multireflector antennas; scanning antennas; submillimeter wave imaging; radar imaging; MILLIMETER-WAVE;

D O I：

10.1109/MAP.2010.5687559

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：

In this contribution, we present simulations and measurements of a reflector system that can rapidly scan a terahertz beam for a high-resolution standoff-imaging application, without compromising the beam quality. The antenna system utilizes a Gregorian confocal-reflector geometry, with a small mechanical rotating mirror. The system has been successfully fabricated and tested, with THz imagery of targets at a 25 m standoff range being obtained In five seconds, for the current configuration. We also describe how frame rates exceeding 2 Hz can be achieved using a heterodyne array of just a few elements, with or without a multiplexing technique.

引用

页码：251 / 259

页数：9

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