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Compact Dual-Polarized/Duplex Filtering Antenna With High Isolation

Qian, Jianfeng, Gao, Steven, Sanz Izquierdo, Benito, Wang, Hanyang, Zhou, Hai, Xu, Huiliang (2023) Compact Dual-Polarized/Duplex Filtering Antenna With High Isolation. IEEE Open Journal of Antennas and Propagation, 4 . pp. 677-685. ISSN 2637-6431. (doi:10.1109/OJAP.2023.3292862) (KAR id:102696)

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This paper introduces novel dual-polarized/duplex filtering antennas with a novel filtering feeding network. The feeding network consists of an all-resonator structure, which shares a common dualmode resonator. This structure facilitates the isolation of two well-isolated channels through the exploitation of the even and odd modes of the dual-mode resonator. By applying balanced excitation to the odd mode and unbalanced excitation to the even mode, the two modes can be separated, creating a hybrid-like feeding structure. Despite the common resonator, the channels exhibit high isolation, and the overall size of the filtering circuit is much smaller than conventional cascaded-resonator designs. To demonstrate the effectiveness of the proposed feeding network, we have designed, fabricated, and measured a dual-polarized and a duplex filtering antenna. The simulated and measured results agree well, showing isolations greater than 34 dB and 38 dB for dual-polarized and duplex cases, respectively. Our proposed antennas are compared with state-of-the-art developments, demonstrating the advantages of compact size, flexible decoupling frequency ratio, and high isolation.

Item Type: Article
DOI/Identification number: 10.1109/OJAP.2023.3292862
Additional information: For the purpose of open access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission.
Uncontrolled keywords: Compact, dual-polarized, duplex, feeding network, filtering antenna, high isolation, hybrid
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK5101 Telecommunications > TK5103.4 Broadband communication systems
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Funders: Engineering and Physical Sciences Research Council (
Depositing User: Benito Sanz Izquierdo
Date Deposited: 05 Sep 2023 22:09 UTC
Last Modified: 27 Feb 2024 10:43 UTC
Resource URI: (The current URI for this page, for reference purposes)

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