Mm-wave high gain substrate integrated cavity excited patch antenna array

Publication Type:
Conference Proceeding
Asia-Pacific Microwave Conference Proceedings, APMC, 2019, 2018-November pp. 591 - 593
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Mm-wave high gain substrate integrated cavity excited patch antenna array.pdfPublished version5.86 MB
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© 2018 IEICE A wideband and high gain cavity-backed 4x4 patch antenna array is proposed in this paper. Each patch antenna element of the array is enclosed by a rectangular cavity and differentially-fed by the slot underneath. Taking advantages of the higher-order substrate integrated cavity excitation, the elements of the array are efficiently fed with the same amplitude and phase in a simplified feeding mechanism instead of the conventional bulky and lossy power-splitter-based feeding network. Measured results show the antenna bandwidth is from 56 to 63.1-GHz (16.1%) with the peak gain reaching 21.4 dBi. The radiation patterns of the array are very stable over the entire frequency band and the cross-polarizations are as low as -30 dB. These good characteristics demonstrate that the proposed array can be a good candidate for the future 60-GHz communication system applications.
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