Dual-polarized metamaterial cavity-backed antennas for mutual coupling reduction

Jinxin Li, Shiwen Yang, Zaiping Nie, William T. Joines and QingHuo Liu

Journal of Electromagnetic Waves and Applications, 2017, vol. 31, issue 9, 957-968

Abstract: A novel metamaterial cavity for mutual coupling reduction of two closely positioned dual-polarized antennas is proposed in this paper. The metamaterial cavity is composed of four sets of meta-surfaces. Two sets are composed of double-layer complementary frequency selective surface and the other two are composed of double-layer complementary negative-index material. In comparison with those two antennas without the metamaterial cavity, measured results show that the isolation level of the same polarization ports (S13 and S24) and the cross-polarization ports (S14 and S23) for the proposed metamaterial cavity-backed antennas can be improved by at most 12.5 and 9.5 dB over the frequency band of 2.5–2.7 GHz, respectively. More importantly, the dual-polarized antenna array keeps other good performance such as VSWR

Date: 2017
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DOI: 10.1080/09205071.2017.1331144

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