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A single-aperture duplex antenna with dual circular polarizations

A single-aperture duplex antenna with dual circular polarizations

Lu, Yun-Long, Wang, Yi, Gao, Steven, Hua, Changzhou and Liu, Taijun (2017) A single-aperture duplex antenna with dual circular polarizations. Microwave and Optical Technology Letters, 59 (12). pp. 3031-3036. ISSN 0895-2477 (Print), 1098-2760 (Online) (doi:

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This article proposes a novel design of a compact single-aperture dual circular polarization (CP) antenna with integrated duplexing functions using a phase controllable coupled resonator structure. To the best of the authors’ knowledge, this is the first report of a multifunctional CP antenna with integrated duplexing performance and dual polarizations. The two orthogonal CPs are realized for the two respective filtering channels. Each channel contains a phased filtering power divider forming the dual-feed to a patch to achieve right-hand or left-hand CP (RHCP or LHCP). The required output phases of the dividers are realized by varied configurations of the coupled k/2resonator pairs. A duplex-CP-antenna with RHCP/ LHCP at the downlink/uplink (2.45/2.7 GHz) is designed, fabricated, and measured. It achieved a 3dB AR bandwidth of 3.2/7.7% at the downlink/uplink and an isolation better than 20 dB. Meanwhile, the antenna showed expected second-order filtering characteristics at both channels.

Item Type: Article
Uncontrolled Keywords: Filtering antenna, Circular polarization, Duplexer
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Engineering (ENG)
Faculty of Engineering & Science > Future Technology and the Internet of Things
Last Modified: 19 Oct 2017 09:13

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