An electrically adjustable multibeam lens antenna. Issue 11 (5th August 2022)

• Record Type: Journal Article
• Authors: Yang, Zhengwei; Zhou, Yajun; Chen, Lianfeng; Wang, Ziye; Guo, Linyan
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 11(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-05
• Subjects: antenna array -- electrically adjustable -- high gain -- multibeam -- planar lens; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23348
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: An electrically adjustable multibeam lens antenna with high gain and directivity is proposed for imaging applications. The proposed antenna adopts two methods to narrow beamwidth and enhance gain. The 9‐element planar Yagi antenna array is used as the feed source. Compared with single antenna, the proposed antenna array has narrower beamwidth in H‐plane, and the beam scanning can be realized in the H‐plane through electrical adjustment. In addition, five‐layers planar lens is designed to enhance radiation gain and directivity in the E‐plane. The multibeam lens antenna can achieve a beam scanning range of ±31° with a gain tolerance of 3 dB and the maximum gain of 21.2 dBi with 2.8 ~ 3.2 GHz. The proposed antenna features the merits of higher gain, lower cost, small size, which is suitable for radar and microwave imaging field.