doi:10.16186/j.cnki.1673-9787.2020020051

Received:2019/09/02

Revised:2020/10/15

Published:2021/11/15

Design of 2.45 GHz wearable antenna based on EBG structure

WANG Shuai1, LIANG Lingshuai1, Li Shufang 2

1.School of Electrical Engineering and Automation， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China;2.School of Information and Communications Engineering， Beijing University of Posts and Telecommunications， Beijing  100876 ， China

Abstract: To solve the problem of high SAR value of the existing wearable antennas ， the method of combining antenna and EBG structure（ electromagnetic band gap structure ） was adopted. Common denim fabric and felt fabric were used as antenna dielectric substrate and EBG structure substrate respectively with the antenna and EBG structure parameters being optimized. The antenna operating frequency band designed in this paper was in the range of 2.34~2.76 CHz， completely covering the ISM band 2.420 0 ~2.483 5 CHz.The S_u（ Returnloss） was - 33.5 dB at the center frequency of 2.6 GHz， and the bandwidth of - 10 dB was 0.42 GHz. Finally ， the human tissue model was established by HFSs software. The simulation results showed that the antenna structure designed in this paper was reasonable and stable with a good S_u， performance and a wide bandwidth. Moreover， The SAR value reduced from 9.6 W/g to 0.48 W/g， greatly reducing the radiation value of the antenna to the human body. The research results could be used in the research and practical application of the wireless body area networks.

Key words:electromagnetic band gap structure;wearable antenna;specific absorption rate;HFSs simulation

 基于EBG结构的2.45 GHz可穿戴天线设计_王帅.pdf