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A Dual-Polarized Planar Antenna Array Differentially-Fed by Orthomode Transducer

Yang, Qingling, Gao, Steven, Luo, Qi, Wen, Lehu, Ren, Xiaofei, Wu, Jian, Ban, Yong-Ling, Yang, Xuexia (2020) A Dual-Polarized Planar Antenna Array Differentially-Fed by Orthomode Transducer. IEEE Transactions on Antennas and Propagation, . ISSN 0018-926X. (doi:10.1109/TAP.2020.3028211) (KAR id:83008)


This paper presents a new design of a differentially-fed substrate integrated planar antenna array with dual-polarization. Compared with the traditional dual-polarized antenna arrays, the proposed array antenna has the advantages of simple configuration, high cross-polarization discrimination (XPD) and high gain. 2×2-element subarray design with a vialoaded crossover structure is used, which reduces the complexity of the array antenna. The operation bandwidth is improved by generating three resonances in the subarray. One 8×8 antenna array is designed, prototyped and tested to exemplify its potential applications in large dual-polarized antenna arrays. A planar orthomode transducer is used to achieve differential excitation for the antenna array. The measured results show that the proposed antenna array has an impedance bandwidth of 19.2–20.7 GHz for |S11| < −10 dB and port isolation higher than 20 dB. The array antenna exhibits a high XPD of 43 dB and a flat gain about 22.2 dBi within the bandwidth.

Item Type: Article
DOI/Identification number: 10.1109/TAP.2020.3028211
Uncontrolled keywords: Antenna array, crossover, cylindrical cavity, differentially-fed, dual-polarized, feed network, orthomode transducer, substrate integrated waveguide (SIW), slot antenna, patch antenna
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics > TK7871.6 Antennas and waveguides
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 18 Sep 2020 14:06 UTC
Last Modified: 04 Jul 2023 11:13 UTC
Resource URI: (The current URI for this page, for reference purposes)

University of Kent Author Information

Yang, Qingling.

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Gao, Steven.

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Luo, Qi.

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Wen, Lehu.

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