An Elliptical Cylindrical Shaped Transmitarray for Wide-Angle Multibeam Applications

被引：21
作者：
Song, Li-Zhao [1 ]
Qin, Pei-Yuan [1 ]
Chen, Shu-Lin [1 ]
Guo, Y. Jay [1 ]
机构：
[1] Univ Technol Sydney UTS, Global Big Data Technol Ctr GBDTC, Ultimo, NSW 2007, Australia
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 10期
基金：
澳大利亚研究理事会;
关键词：
E-band; millimeter wave (mm-wave); multibeam antenna; transmitarray; wide angle coverage; BAND TRANSMITARRAY; LUNEBURG LENS; HIGH-GAIN; BEAM; ANTENNAS;
D O I：
10.1109/TAP.2021.3083828
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：
A transmitarray antenna with an elliptical cylindrical shape is presented for a wide-angle multibeam radiation in this communication. The transmitarray has a cylindrical radiating aperture with an elliptical cross-section, namely, elliptical cylindrical shape. Multiple feeds can be placed on the middle horizontal plane to realize multiple beams. Inspired by a 2-D Ruze lens, the antenna shape and the phase compensation are jointly designed according to the desired maximal beam direction. Innovative methods including a feed refocusing analysis and a virtual focal length are utilized to achieve the phase compensation across the 3-D aperture for multiple beam radiations with a small scanning loss. In order to validate the proposed antenna, a prototype operating in the millimeter-wave (mm-wave) E-band has been designed, fabricated, and measured. By changing the position of the feeding gain horn along the refocusing arc, the main beam of antenna can be scanned in 11 directions. The measured peak boresight realized gain is 27 dBi at 70.5 GHz and a beam coverage of +/- 43 degrees with a less than 2.7 dB scanning loss is obtained.
引用
收藏
页码：7023 / 7028
页数：6
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