电波科学学报2025，Vol.40Issue(2)：338-346,9.DOI:10.12265/j.cjors.2024113
面向体表通信的透明柔性全向圆极化可重构天线
Transparent and flexible antenna with omnidirectional circular-polarization reconfigurability for on-body communications
摘要
Abstract
Aiming at the requirements of on-body communications and complex on-body application scenarios in wireless body area network(WBAN),a transparent and flexible wearable antenna with omnidirectional circular polarization(CP)is developed,based on the dielectric resonator(DR)loaded with an equivalent current loop.And,the reconfiguration of CP is further implemented.Radiated electric field components of Eθ and Eφ are generated by the TM01δ mode of the cylindrical DR and the loop current of the grounded L-shaped branches,respectively.Omnidirectional CPs are realized when the two components are equal in magnitude but differ in phase by 90°.The proposed antenna can be switched between left-and right-handed circularly polarized omnidirectional radiations through mechanical rotation,with-10 dB impedance bandwidth covering the 5.8 GHz industrial,scientific,and medical(ISM)band.The 3 dB axial ratio(AR)bandwidths at 5.8 GHz of two states are 10.9%and 10.8%,respectively.The DR and grounded branches are constructed of polydimethylsiloxane(PDMS)and conductive mesh fabric,respectively.The radiation efficiency of 59%and gain of 2.6 dBic are enabled,together with the advantages of comfort,transparency,and concealment.Furthermore,the 3 dB AR beamwidth in the θ=50° plane achieves a full coverage of 360°.Antenna prototypes were fabricated with the aid of 3D printing technology and the proposed design was verified through tests.关键词
圆极化/全向辐射/可重构/透明天线/柔性天线/可穿戴天线Key words
circular polarization/omnidirectional radiation/reconfiguration/transparent antenna/flexible antenna/wearable antenna分类
信息技术与安全科学引用本文复制引用
朱文进,刘雄英,范艺..面向体表通信的透明柔性全向圆极化可重构天线[J].电波科学学报,2025,40(2):338-346,9.基金项目
广东省数字孪生人重点实验室开放课题(2022B1212010004) （2022B1212010004）
国家自然科学基金(61372008) （61372008）
