Digital Reflectarray Considerations for Terrestrial Millimeter-Wave Imaging

被引：21

作者：

Dietlein, Charles R. ^{[1
]}

Hedden, Abigail S. ^{[1
]}

Wikner, David A. ^{[1
]}

机构：

[1] USA, Res Lab, RDRL SER M, Adelphi, MD 20783 USA

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2012年 / 11卷

关键词：

Imaging; millimeter-wave; reflectarray; PHASE;

D O I：

10.1109/LAWP.2012.2189545

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：

We investigate how realistic architecture considerations affect the performance of wafer-scale electronically scanned millimeter-wave reflectarrays. Considering the application of a confocal Gregorian optics geometry with a small angular field of view, we examine how a reflectarray's discrete (digital) phase state quantization and electrical size impact scan angle accuracy and quantization lobe performance degradation. We quantify the impact of these effects on the camera's imaging performance and show that, for these reflectarrays, phase quantization of 2 bits is sufficient.

引用

页码：272 / 275

页数：4

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