摘要
针对机械控制和电控制存在的天线切换速度慢、复杂度高和成本低等问题,本文主要对一种方向图可重构微带贴片天线进行设计。提出一种具有5种波束指向的方向图可重构贴片天线,该天线由辐射贴片和4个寄生贴片组成,采用同轴线馈电,通过控制地面加载开关,寄生贴片可以在指向器和反射器之间进行切换,从而实现方向图的重构,同时对3种固定状态的天线原型进行加工测试,并采用Ansys HFSS软件,对天线进行仿真分析。仿真结果表明,该天线波束可以在92°,180°,267°和350°以及+z方向这5种指向中进行切换,实测天线模式1、模式2和模式5的共同带宽为2.43~2.45 GHz,水平面上波束指向分别为31°和80°,垂直面上的倾斜角度为6°,3种状态下的天线增益为3.1~3.9 dBi,3 dB波瓣宽度均小于70°,测试结果和仿真结果较为吻合,验证了该天线方向图可重构的特性。该天线结构简单,制作成本低,适用于无线局域网(wireless local area network,WLAN)系统中,该研究具有一定的应用价值。
In order to solve the problems of low switching speed,high complexity and low cost existing in mechanical control and electrical control,this paper mainly designs a pattern reconfigurable patch antenna.A pattern reconfigurable patch antenna with five kinds of beam directions is proposed.The antenna is composed of a radiation patch and four parasitic patches and fed by coaxial line.By controlling the switches loaded on the ground,each parasitic patch can be switched between director and reflector,so as to realize the reconfiguration of the pattern.At the same time,simulation analysis of the antenna is carried out by using Ansys HFSS software and three kinds of antenna prototype with fixed state are fabricated and measured.The simulated results show that the beam can be switched in five directions of 92°,180°,267°,350°and+z direction.The measured results show that the common bandwidth of antenna with modes 1,2 and 5 is 2.43~2.45 GHz.The horizontal beam directions are 31°and 80°,and the inclined angle of the beam on the vertical plane is 5°.The gain of the antenna in five states is 3.1~3.9 dBi,and the width of 3 dB beamwidth is less than 70°.The measured results are in good agreement with the simulated results,which verifies the pattern reconfigurable characteristics of the antenna.The antenna has simple structure and low production cost,which is suitable for Wireless Local Area Network(WLAN)system and the research has certain application value.
作者
刘倩倩
陈娅莉
宗卫华
李山东
LIU Qianqian;CHEN Yali;ZONG Weihua;LI Shandong(The College School of Electronic and Information,Qingdao University,Qingdao 266071,China)
出处
《青岛大学学报（工程技术版）》
CAS
2022年第2期20-26,共7页
Journal of Qingdao University(Engineering & Technology Edition)
基金
山东省自然科学基金资助项目(ZR2020MF023)。
关键词
可重构天线
微带贴片天线
方向图
波束可调
reconfigurable antenna
microstrip patch antenna
pattern
beam adjustable
