期刊
IET MICROWAVES ANTENNAS & PROPAGATION
卷 12, 期 1, 页码 127-131出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-map.2017.0271
关键词
wearable antennas; waveguide antennas; substrate integrated waveguides; UHF antennas; anechoic chambers (electromagnetic); circularly-polarised cavity-backed wearable antenna; substrate-integrated waveguide antenna; SIW antenna; textile substrate; industrial-scientific-medical frequency band; antenna topology; folded cavity; annular ring; radiating element; body-centric applications; electromagnetic performance; anechoic chamber; frequency 2; 45 GHz
This study presents a circularly-polarised substrate-integrated waveguide (SIW) antenna implemented using a textile substrate and operating at 2.45GHz, in the industrial, scientific, and medical frequency band. The antenna topology is based on a folded cavity with an annular ring as a radiating element, and it permits to obtain compact size and low sensitivity to the environment, without deteriorating the radiating performance. These characteristics, together with the choice of adopting a textile substrate, make the SIW antenna suitable for the integration in wearable systems for body-centric applications. The electromagnetic performance of the proposed antenna achieved in simulations was verified through the measurement of the device in an anechoic chamber. The circularly-polarised antenna exhibits a maximum gain of 6.5dBi, a radiation efficiency of 73% and a very high front-to-back ratio.
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