A Novel Electronically Controlled Two-Dimensional Terahertz Beam-Scanning Reflectarray Antenna Based on Liquid Crystals

被引：7
|
作者：
Yang, Jun [1 ]
Wang, Pengjun [2 ]
Sun, Shuangyuan [2 ]
Li, Ying [1 ]
Yin, Zhiping [1 ]
Deng, Guangsheng [1 ]
机构：
[1] Hefei Univ Technol, Acad Optoelect Technol, Special Display & Imaging Technol Innovat Ctr Anh, Hefei, Peoples R China
[2] Hefei Univ Technol, Sch Elect Sci & Appl Phys, Hefei, Peoples R China
来源：
FRONTIERS IN PHYSICS | 2020年 / 8卷
基金：
中国国家自然科学基金;
关键词：
terahertz; reconfigurable reflectarray; liquid crystal (LC); two-dimensional (2-D) beam scanning; millimeter and submillimeter wave antenna; PHASE-SHIFTER; DESIGN;
D O I：
10.3389/fphy.2020.576045
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This study investigated a novel electronically controlled two-dimensional beam-scanning reflective array antenna (reflectarray), which uses nematic liquid crystals. A double-dipole resonance structure is used as the phase-shift unit for the reflectarray for the required phase compensation. The simulation shows that, for about 7 GHz bandwidth of the phase shift range, over 360 degrees can be achieved at the F-band. In addition, a novel wiring scheme is proposed to reduce the adverse effect of the biasing line on the phase-shift performance and simplify the manufacturing process. A simulation of the designed 39 x 39 reflectarray shows that the maximum beam steering range, maximum gain, and side-lobe level at 115 GHz are 20 degrees, 16.55 dBi, and -8.4 dB, respectively.
引用
收藏
页数：7
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