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Circularly-polarised cavity-backed wearable antenna in SIW technology

Tijdschriftbijdrage - Tijdschriftartikel

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.
Tijdschrift: IET MICROWAVES ANTENNAS & PROPAGATION
ISSN: 1751-8733
Issue: 1
Volume: 12
Pagina's: 127 - 131
Jaar van publicatie:2018