Active Phased Array of Cavity-Backed Slot Antennas With Modified Feeding Structure for the Applications of Direction-of-Arrival Estimation

被引：14

作者：

Chou, Hsi-Tseng ^{[1
]}

Hsiao, Tsai-Wen ^{[2
]}

Chou, Jui-Hung ^{[3
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 10617, Taiwan

[2] Yuan Ze Univ, Dept Commun Engn, Taoyuan 32003, Taiwan

[3] Natl Chung Shan Inst Sci & Technol, Taoyuan 32547, Taiwan

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 05期

关键词：

Active phased array of antennas; cavity-backed slot antennas (CBSAs); direction-of-arrival (DOA) estimation; microstrip feeding structure; BANDWIDTH ENHANCEMENT; WAVE-GUIDE;

D O I：

10.1109/TAP.2018.2806419

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 communication presents a cavity-backed slot antenna (CBSA) array for the estimation of direction of arrival (DOA). This new CBSA employs an alternative feeding structure to excite the radiation of cavity-backed slots and transfer the area for RF module implementation from the front surface of the array aperture to the bottom behind the cavity. This backfeeding design allows the accommodation of active RF modules inserted from the bottom behind the antenna aperture, and avoids interfering with the antenna radiation. The new feeding structure may also reduce the depth of the metal cavity and, in turn, decrease the thickness and weight of antennas in the phased array composition to make a compact array with a low profile. The bandwidth is found to be larger than that of a conventional CBSA. The antenna array for the DOA estimation has been prototyped with 32 elements. Experimental data and numerical simulation results are presented to validate the proposed antenna design concepts.

引用

页码：2667 / 2672

页数：6

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