Single-feed ultra-wideband circularly polarized antenna with enhanced front-to-back ratio

Zhang, Long and Gao, Steven and Luo, Qi and Young, Paul R. and Li, Qingxia and Geng, You-Lin and Abd-Alhameed, Raed A. (2015) Single-feed ultra-wideband circularly polarized antenna with enhanced front-to-back ratio. IEEE Transactions on Antennas and Propagation, PP (99). p. 1. ISSN 0018-926X. (doi:https://doi.org/10.1109/TAP.2015.2501844) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1109/TAP.2015.2501844

Abstract

This communication presents a single-feed ultra-wideband circularly polarized (CP) antenna with high front-to-back ratio (FBR). The antenna is composed of two orthogonally placed elliptical dipoles printed on both sides of a substrate. To realize high front-to-back ratio, a novel composite cavity is also proposed and integrated with the presented crossed dipoles, which effectively reduces the back-lobe of the crossed dipoles. Simulation results are in good agreement with measured results which demonstrate an impedance bandwidth from 0.9 to 2.95GHz (106.5%) and a 3-dB axial ratio bandwidth from 1 to 2.87GHz (96.6%). The measured FBR is about 30dB across the whole GNSS band. Compared with other reported single-feed wideband CP antennas, the antenna has advantages such as a wider CP bandwidth and lower back-lobe radiation.

Item Type: Article
Uncontrolled keywords: Crossed dipoles; back-lobe reduction; circular polarization; single-feed antennas; wideband antenna; Antenna measurements; Bandwidth; Cavity resonators; Dipole antennas; Ultra wideband antennas
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunications
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Qi Luo
Date Deposited: 21 Dec 2015 14:44 UTC
Last Modified: 22 Mar 2017 14:55 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/53538 (The current URI for this page, for reference purposes)
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