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Polarization and bandwidth improvements of a zeroth‐order resonators loaded microstrip antenna with grid polarization filter cover and metallic cavity
Author(s) -
Peng Lin,
Wang BingZhong,
Jiang Xing,
Li Simin,
Ruan Chengli
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22445
Subject(s) - polarization (electrochemistry) , resonator , optics , bandwidth (computing) , polarizing filter , circular polarization , microstrip antenna , physics , materials science , microstrip , optoelectronics , antenna (radio) , optical filter , telecommunications , engineering , chemistry
In this research, the polarization and bandwidth of a zeroth‐order resonators (ZORs) loaded microstrip antenna are improved by employing a grid polarization filter cover and a metallic cavity. The polarization improvement is owing to three operations, (a) the filter cover allows co‐polarization wave passing through only, (b) the ZORs partly rotate the reflected cross‐polarizations ( X ‐polarizations) wave to be co‐polarization, (c) the metallic cavity suppresses the fringe fields of the cover. The bandwidth enhancement is owing to the polarization cover that reflects the X ‐polarization, which forms a resonant cavity. The improvements of the simulated cross‐polarizations range from 17.7 to 35.3 dB in the band. The measured bandwidth is increased from 940 MHz (17.22%) of the referenced antenna to 1390 MHz (24.5%) of the proposed antenna. The measured results verify the simulations.