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

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        A_Dual_Polarized_Planar_Antenna_Array_Differentially_Fed_by_Orthomode_Transducer.pdf (PDF, 4Mb)
        Author
        Yang, Q.
        Gao, S.
        Luo, Q.
        Wen, L.
        Ren, X.
        Wu, J.
        Ban, Y. -L.
        Yang, X.
        Attention
        2299/24067
        Abstract
        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 via-loaded crossover structure is used, which reduces the complexity of the array antenna. The operation bandwidth is improved by generating three resonances in the subarray. An 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.
        Publication date
        2021-05-05
        Published in
        IEEE Transactions on Antennas and Propagation
        Published version
        https://doi.org/10.1109/TAP.2020.3028211
        Other links
        http://hdl.handle.net/2299/24067
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