基于SIW的扇叶型液晶宽缝圆极化漏波天线设计  

Design of a Fan-shaped Liquid Crystal Wide Slit Circularly Polarized Leaky Wave Antenna Based on SIW

作　　者：袁永博 胡巍 赵嘉成 刘洪满 杨炜毅 肖晟远 张辰启 唐松涛 董凌峰 蒋迪 YUAN Yongbo;HU Wei;ZHAO Jiacheng;LIU Hongman;YANG Weiyi;XIAO Shengyuan;ZHANG Chenqi;TANG Songtao;DONG Lingfeng;JIANG Di(School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 610000,China)

机构地区：[1]电子科技大学信息与通信工程学院,成都610000

出　　处：《微波学报》2024年第S1期28-31,共4页Journal of Microwaves

基　　金：四川省重大科技专项(2023ZDZX0018);四川省科技重点研发项目(2023YFG0123)

摘　　要：随着通信技术的发展以及目前对天线性能要求的逐渐提高,基于SIW的漏波天线,凭借其高效率、高增益的辐射性能,成为未来天线研究和发展的主流路线之一。本文通过将液晶材料这一在微波频段能实现先行调谐的新材料与基于SIW的漏波天线结合,可以解决传统波束可重构天线面临的结构复杂、不能连续调谐等问题。首先介绍了天线圆极化的实现原理,进而在此基础上设计了一款基于SIW的扇叶型宽缝圆极化漏波天线单元,进一步设计了单元的加载扇叶型辐射贴片,利用液晶材料实现其波束控制。天线单元增益达5.36dBi,实现了右旋圆极化、中心轴比为0.93dB,轴比带宽为2.32GHz(16.45~18.77GHz)。With the development of communication technology and the gradual improvement of antenna performance requirements,leaky wave antennas based on SIW have become one of the mainstream routes for future antenna research and development due to their high efficiency and high gain radiation performance.This article combines liquid crystal materials,a new material that can achieve pre tuning in the microwave frequency band,with leaky wave antennas based on SIW to solve the problems of complex structure and inability to continuously tune traditional beam reconfigurable antennas.Firstly,the implementation principle of antenna circular polarization was introduced,and based on this,a fan-shaped wide slot circular polarization leaky wave antenna unit based on SIW was designed.Furthermore,the loading fan-shaped radiation patch of the unit was designed,and its beam control was achieved using liquid crystal material.The gain of the antenna unit reaches 5.36dBi,achieving right-handed circular polarization with a central axis ratio of 0.93dB and an axis ratio bandwidth of 2.32GHz(16.45-18.77GHz).

关 键 词：漏波天线 SIW 液晶材料 圆极化 

分 类 号：TN822.6[电子电信—信息与通信工程]