基于PDMS嵌入式超宽带天线设计  

Design of Ultra-Wideband antenna based on PDMS embedded structure

作　　者：刘阔 郑宏兴 刘瑞鹏 王蒙军 LIU Kuo;ZHENG Hongxing;LIU Ruipeng;WANG Mengjun(School of Electronics and Information Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学电子信息工程学院,天津300401

出　　处：《太赫兹科学与电子信息学报》2022年第8期843-848,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(61671200);河北省自然科学基金重点资助项目(F2017202283)。

摘　　要：设计了一种以柔性材料聚二甲基硅氧烷(PDMS)为介质基片的超宽带(UWB)天线,其辐射单元由矩形和半圆环金属贴片组成,两部分结构由带状贴片连接,采用共面波导方式馈电。上述金属贴片嵌入在PDMS基片中间,用于人体通信的可穿戴系统。利用嵌入式结构,有效提高了天线的柔韧性和耐用性。为了更好地模拟天线在人体表面的工作环境,构建了包括皮肤、脂肪和肌肉的三层人体组织模型,满足人体安全的国际标准的最大天线比吸收率值为16.4 mW。最后对天线样品进行测试,结果表明天线总体性能稳定,阻抗带宽为5.39-10.33 GHz,实现了在医学机构使用的频段(5.725-5.875 GHz)要求。An Ultra-Wide-Band(UWB)antenna with flexible material Polydimethylsiloxane(PDMS)as the dielectric substrate is designed.Its radiating element is composed of rectangular and semi-circular metal patches.The two-part structure is connected by a strip patch.The coplanar waveguide feeding method is adopted for the antenna.The above-mentioned metal patch is embedded inside the middle of the PDMS substrates;and this antenna can be used in a wearable system for human body communication.The embedded structure can effectively improve the flexibility and durability of the antenna.In order to better simulate the working environment of the antenna on human body,a three-layer human body tissue model including skin,fat and muscle is constructed.The maximum antenna specific absorption rate is 16.4mW that meets the international standards for human safety.Finally,the antenna samples are tested,and the results show that the overall performance of the antenna is stable,and the impedance bandwidth is 5.39-10.33 GHz,which meets the requirements of medical band(5.725-5.875 GHz).

关 键 词：可穿戴天线 超宽带 聚二甲基硅氧烷 嵌入式结构 

分 类 号：TN82[电子电信—信息与通信工程]