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Metamaterial slabs enhanced modified antipodal Vivaldi antenna
Author(s) -
Wang Ziye,
Guo Minjie,
Zhao Xiao,
Guo Linyan,
Yang Zhengwei,
Chen Lianfeng
Publication year - 2021
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.22671
Subject(s) - vivaldi antenna , beamwidth , metamaterial , antipodal point , directivity , antenna gain , optics , bandwidth (computing) , materials science , metamaterial antenna , antenna (radio) , omnidirectional antenna , radiation pattern , acoustics , antenna aperture , physics , computer science , coaxial antenna , telecommunications , geometry , mathematics
A metamaterials slabs covered antipodal Vivaldi antenna (MSCAVA) is proposed herein to improve directivity and gain. The proposed metamaterials slabs have a higher effective permittivity than the substrate. The design process of proposed MSCAVA is presented, along with the comparison with other existing works. The simulated and measured results show that the −10 dB bandwidth of the proposed antenna is 1.5 to 8 GHz while the E‐planes' and H‐planes' half‐power beamwidth have been effectively reduced. The maximum gain is 16.4 dBi at 8 GHz. Owing to those good properties, the proposed MSCAVA could be used in short‐pulse ground penetrating radar and other situations where need high gain and directivity.