一种UHF圆极化介质腔CSRR标签传感器天线  

A UHF Circularly Polarized Dielectric Cavity CSRR Tag Sensor Antenna

作　　者：靳翔宇 华昌洲 JIN Xiang-yu;HUA Chang-zhou(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学信息科学与工程学院

出　　处：《无线通信技术》2019年第3期41-45,共5页Wireless Communication Technology

基　　金：中国博士后科学基金面上项目(2018M642385)

摘　　要：本文设计了一种圆极化介质腔互补开口环谐振器(CSRR)标签传感器天线,具有无线检测液体介电常数的功能.为了实现这一功能,采用3D打印技术制作了内部具有十字形空气腔结构的介质腔体,空气腔用来加载待测液体.介质腔四周覆有金属铜箔来防止电磁波泄漏,通过在顶部和底部金属面上的矩形双CSRR来实现天线的电磁波辐射和圆极化辐射特性.仿真结果表明,标签天线具有圆极化辐射特性,且中心工作频率可随加载液体的介电常数变化.In this paper,a circularly polarized dielectric cavity complementary split ring resonator(CSRR)tag sensor antenna is designed,which has the function of wireless detection of the dielectric constant of liquid.In order to achieve this function,a 3D printing technology is used to fabricate a dielectric cavity with a cross-shaped air cavity structure inside,and the air cavity is used to load the liquid under test.The dielectric cavity is covered with a metallic copper foil to prevent electromagnetic wave leakage,and the electromagnetic wave radiation and circular polarization performance of the antenna are realized by a pair of CSRRs in the top and bottom metal surfaces.The simulated results show that the tag antenna has circularly polarized radiation characteristics,and the center operating frequency can vary with the dielectric constant of the loaded liquid.

关 键 词：圆极化天线 互补开口环谐振器(CSRR) 3D打印 射频识别 标签传感器 

分 类 号：TN823+.24[电子电信—信息与通信工程]