A Large Field-of-View Focal Plane Array based on Zernike Freeform Surface

被引：1

作者：

Jiang, Zhe ^{[1
]}

Qiu, Jinghui ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Elect & informat Engn, Harbin 150001, Peoples R China

来源：

2022 INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY (ICMMT) | 2022年

基金：

中国国家自然科学基金;

关键词：

Focal plane array (FPA); field-of-view (FoV); Zernike Free-form Surface;

D O I：

10.1109/ICMMT55580.2022.10022765

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：

Applications of passive millimeter waves (PMMWs), especially PMMW imaging and PMMW radar, are required in medicine, homeland security, communication, and space technology, but constrained by the limited field-of-view (FoV) of focal plane array (FPA). In this paper, the influence of feed antenna tilt on antenna gain is investigated theoretically, and a forward free-form surface optimization method to expand FoV is proposed, thereby designing a wide-scan MMW focal plane array with a free-form surface reflector, which provides a high antenna gain of 46.5dB. The staggered placement of feed antennas achieves a 3dB effective isotropic radiated power (EIRP) within a relatively large field of view, up to +/-18.7 degrees. The FPA uses a paraboloid-based Zernike freeform reflector that optimizes the illumination of the far field region according to the feed pattern. In this way, we could improve the FoV and increase feed elements of the system without worrying about coupling efficiency between the focus field and single mode feed antenna.

引用

页数：3

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