Compact 2-D scanning multibeam array utilizing the SIW Three-Way couplers at 28 GHz

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Journal Article
IEEE Antennas and Wireless Propagation Letters, 2018, 17 (10), pp. 1915 - 1919
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© 2002-2011 IEEE. A compact two-dimensional (2-D) scanning multibeam array operating at 28 GHz in a substrate integrated waveguide technology is proposed, designed, simulated, and fabricated in this letter. To achieve better compactness, three-way couplers, instead of traditional Butler matrices, are applied here to form 2-D scanning beam-forming network. By doing so, the occupied area can be significantly reduced. After joining to the radiation portion, a 2-D scanning multibeam array allows for 3 × 3 beam steering in two orthogonal planes is fabricated and measured to test whether the measured results agree well with the simulation.
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