Robust textile-based spoof plasmonic frequency scanning antenna for on-body IoT applications  

作　　者：Zhao-Min CHEN Jun-Lin ZHAN Hao CHEN Ya LI Hongjun HE Wu YANG Zhen-Guo LIU Wei-Bing LU 

机构地区：[1]State Key Lab of Millimeter Waves,School of Information Science and Engineering,Southeast University,Nanjing 210096,China [2]Center for Flexible RF Technology,Frontiers Science Center for Mobile Information Communication and Security,Southeast University,Nanjing 210096,China [3]Purple Mountain Laboratories,Nanjing 21111l,China [4]Future Research Laboratory,China Mobile Research Institute,Beijing 100032,China

出　　处：《Science China(Information Sciences)》2024年第8期265-280,共16页中国科学（信息科学）（英文版）

基　　金：supported by National Science Funds for Distinguished Young Scientists(Grant No.61925-103);Jiangsu Specially-Appointed Professor,the Fundamental Research Funds for the Central Universities(Grant No.2242022k6-0004);Nation Natural Science Foundation of China(Grant Nos.62101115,62231001);China Postdoctoral Science Foundation(Grant No.2022M710670);Southeast University-China Mobile Research Institute Joint Innovation Center(Grant No.R207010101125D9).

摘　　要：Securing a comfortable, wearable compact frequency beam scanning antenna(FBSA) with robustness to deformation, low specific absorption rate(SAR), and good coverage of the surrounding environment for Internet of Things(IoT) applications, such as on-body navigation and wireless communication is an emerging challenge. In this work, a robust textile-based spoof plasmonic frequency scanning antenna utilizing higher-order modes is presented, which is also robust to deformation caused by the activities of the human body. The innovative design of the element ensures the high-efficiency transmission of the fundamental mode of spoof surface plasmon polaritons(SSPP) structure, providing the potential of being a multifunctional composite device in the compact on-body network. Besides, an artificial magnetic conductor(AMC) is designed underneath the SSPP structure, obtaining a low SAR value(0.113 W/kg), which ensures the safety of users. As a practical realization of this concept, a textile-based spoof plasmonic antenna was fabricated in the microwave regime and the performed experimental results show the proposed antenna has a single-beam radiation characteristic with a 70° beam scanning angle range when the frequency is 4.7–6.0 GHz with a high average realized gain of 13.15 dBi. And it still maintains a steady performance when faced with structure deformation, which proves its robustness. Wireless communication quality experiments are performed to demonstrate the proposed antenna can measure the angles of targets and realize wireless signal transmission to specific targets as the frequency varies, it may find great potential in the field of on-body IoT applications.

关 键 词：frequency beam scanning antenna(FBSA) Internet of Things(IoT) on-body communication spoof surface plasmon polaritons(SSPP) textile-based antenna 

分 类 号：TN820[电子电信—信息与通信工程]