Substrate-Integrated-Waveguide-Fed Array Antenna Covering 57-71 GHz Band for 5G Applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Article number7967853
Pages (from-to)6298-6306
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number12
Online published4 Jul 2017
Publication statusPublished - Dec 2017


A wideband linearly polarized antenna element with complementary sources is proposed and exploited for array antennas. The element covers a bandwidth of 38.7% from 50 to 74 GHz with an average gain of 8.7 dBi. The four-way broad wall coupler is applied for the 2 × 2 sub-array, which suppresses the cross-polarization of a single element. Based on the designed 2 × 2 sub-array, two larger arrays have been designed and measured. The 4 × 4 array exhibits 26.7% bandwidth, fully covering the 57 to 71 GHz unlicensed band. The 8 × 8 array antenna covers a bandwidth of 14.5 GHz (22.9%) from 56.1 to 70.6 GHz with a peak gain of 26.7 dBi, and the radiation efficiency is over 80% within the matching band. It is demonstrated that the proposed antenna element and arrays can be used for future 5G applications to cover the 22% bandwidth of the unlicensed band with high gain and low loss.

Research Area(s)

  • Linear polarization, 60-GHz, complementary sources, array antenna, millimeter-wave, substrate integrated waveguide, 5G