摘要
提出了一种基于液晶的太赫兹电控反射式移相器及其构成的波束扫描阵列天线。通过采用液晶调控的开槽结构移相器,解决了液晶调控过程中谐振层覆盖面不足造成的液晶取向不均、边缘效应和饱和电压增大等问题。设计了工作在380GHz三开槽的移相器,对谐振频点的表面电流分布和谐振频点进行了仿真分析。数值计算结果表明当液晶相对介电常数在2.47~3.26范围内变化,377~392GHz频率范围内移相器能够实现360°的相移。采用三开槽结构反射相移单元,设计了工作于380GHz的电控波束扫描阵列天线,实现了30°范围内的一维波束扫描,主瓣增益大于20 dBi。
A terahertz electrically controlled reflective phase shifter based on liquid crystal is proposed as well as its beam scanning array antenna.By using the slotted structure,the problems of uneven orientation,edge effect and increased saturation voltage due to the insufficient coverage of resonant layer in the process of liquid crystal regulation can be solved.A phase shifter wit h three slots at 380 GHz is designed,and the surface current distribution and resonance frequency point s are simulated.The numerical results show that the phase shifter can achieve 360°phase shift in 377-392 GHz when the relative dielectric constant of liquid crystal changes in 2.47-3.26.An electronically controlled beam scanning array antenna operating at 380 GHz is designed by using a reflective phase-shifting unit with three slots.One dimensional beam scanning within 30°is realized,and the main lobe gain is greater than 20 dBi.
作者
高浩宇
殷明君
储修军
高盛
赵子龙
杨军
尹治平
邓光晟
GAO Haoyu;YIN Mingjun;CHU Xiujun;GAO Sheng;ZHAO Zilong;YANG Jun;YIN Zhiping;DENG Guangsheng(Academy of Opto-Electric Technology,Hefei University of Technology,Hefei Anhui 230009,China;Science and Technology on Electronic Information Control Laboratory,Chengdu Sichuan 610036,China)
出处
《太赫兹科学与电子信息学报》
2021年第4期642-647,共6页
Journal of Terahertz Science and Electronic Information Technology
基金
电子信息控制重点实验室基金资助项目(20190800147)
关键词
太赫兹
反射式移相器
可重构天线
液晶
电控
terahertz
reflective phase shifter
reconfigurable antenna
Liquid Crystal(LC)
electronically controlled