STEP-SHAPED CAVITY-BACKED ANTENNA AND WIDEBAND WIDE-ANGLE IMPEDANCE MATCHING IN PLANAR PHASED ARRAY | Zendy

Ya-Qing Wen | Zendy; Guoming Gao | Zendy; Wenjun Chen | Zendy

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STEP-SHAPED CAVITY-BACKED ANTENNA AND WIDEBAND WIDE-ANGLE IMPEDANCE MATCHING IN PLANAR PHASED ARRAY

Author(s) -

Ya-Qing Wen,

Guoming Gao,

Wenjun Chen

Publication year - 2020

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/pierc19081701

Subject(s) - wideband , planar , impedance matching , phased array , electrical impedance , acoustics , antenna (radio) , matching (statistics) , optics , materials science , physics , engineering , electrical engineering , computer science , mathematics , computer graphics (images) , statistics

An improved wideband cavity-backed antenna and a planar phased array with wideband wide-angle impedance matching (WAIM) are provided in this paper. A step-shaped cavity is applied in the antenna, so the relative bandwidth of VSWR < 2 can be improved to more than 52% without increasing the cavity profile. Furthermore, a planar phased array constructed by the cavity-backed antenna can work with a wide-angle scanning range of ±60◦ at both Eand H-planes. Due to the wideangle scanning range, the impedance matching for the phased array will be unstable in the required wideband. Consequently, the matching layer with metamaterials has been loaded on the phased array. The VSWR is controlled within 2 in E-plane and 3.5 in H-plane during the scanning range of ±60◦ in wide bandwidth.

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