A Low-Profile Quad-Beam Transmitarray

被引：25

作者：

Aziz, Abdul ^{[1
]}

Yang, Fan ^{[2
]}

Xu, Shenheng ^{[2
]}

Li, Maokun ^{[2
]}

机构：

[1] Islamia Univ Bahawalpur, Fac Engn, Bahawalpur 63100, Pakistan

[2] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2020年 / 19卷 / 08期

关键词：

Apertures; Antenna radiation patterns; Antenna feeds; Transmitting antennas; Optimization; Microstrip antenna arrays; Intersection approach; low-profile; multibeam; optimization; transmitarray; DESIGN; ARRAY;

D O I：

10.1109/LAWP.2020.3000337

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 letter, a novel method is proposed to design a low-profile multibeam transmitarray. Instead of a conventional horn feed, a slot array (SA) feed is used to illuminate uniformly same size transmitarray aperture (TA) in near field with a plane wave excitation, andTAis designed to transform plane wave to high gain multibeam pattern. The separation between SA feed and TA is independent of aperture size, so a very small separation is selected to achieve a low-profile transmitarray. A quad layer 3-dipole unit cell with 360 degrees phase shift range is used as a transmitarray element. A modified intersection approach is used to optimize distribution of transmitarray elements on aperture to synthesize multibeam pattern. Finally, a prototype of Ku-band quad-beam transmitarray antenna is fabricated and tested. The designed transmitarray shows good quad-beam performancewith reduced profile and good match has been observed between simulated and measured results.

引用

页码：1340 / 1344

页数：5

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