A NOVEL DUAL-PASSBAND NET-SHAPED FSS STRUCTURE USED FOR MIMO ANTENNAS
Author(s) -
Zhiwei Liu,
Shunli Jie,
Haitao Ma,
Xiaoyan Zhang,
Beibei Xing
Publication year - 2019
Publication title -
progress in electromagnetics research c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 34
ISSN - 1937-8718
DOI - 10.2528/pierc18101501
Subject(s) - passband , mimo , dual (grammatical number) , net (polyhedron) , electronic engineering , computer science , engineering , band pass filter , mathematics , geometry , art , beamforming , literature
A dual-passband frequency selective surface (FSS) is designed in this paper. Two passbands are 2–3.4 GHz and 5.5–6.8 GHz, respectively. It is used as a spatial filter to improve the radiation and scattering performance of an antenna. The structure is combined with two layers. One is metal, and the other is intermediate medium. The requirements of wide-band, polarization-independent, wide incidence angle and miniaturized FSS with a thickness of only 0.0085λ are achieved by parameter optimization. When the FSS is used to the proposed microstrip antenna, the relative bandwidth is increased by 31.4% and 50%, and the peak gain is increased by 2.53 dB and 1.86 dB at 5.8 GHz and 6.4 GHz, respectively. Meanwhile, the maximum RCS reduction of the microstrip antenna is 16 dB. On the other hand, the FSS is able to be applied to a dipole antenna to improve the transmission coefficient and phase. Simulation and measurement results of the transmission coefficient and phase of the antenna are almost the same.
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