Premium
Omnidirectional broadband patch antenna with horizontal gain enhanced by epsilon‐negative metamaterial superstrate
Author(s) -
Guo Yao,
Zhao Jing,
Hou Quanwen,
Zhao Xiaopeng
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32072
Subject(s) - omnidirectional antenna , metamaterial , broadband , acoustics , optics , antenna gain , radiation pattern , coaxial antenna , antenna measurement , patch antenna , metamaterial antenna , antenna (radio) , physics , materials science , engineering , telecommunications
It is hard to improve the horizontal gain of broadband omnidirectional patch antenna based on zero‐order resonance. Enlightened by metamaterial employed to enhance the directional patch antenna, we devised an epsilon‐negative (ENG) metamaterial as a cover that placed above omnidirectional antenna to enhance the horizontal gain. Then, the air layer is replaced by a low permittivity foam for practical application. Measured results prove that this method can improve the horizontal gain more than 30% (0.6 dBi) at various frequencies with roundness below 3 dB. This method provides a novel approach to improve the horizontal gain of broadband omnidirectional patch antenna, which is especially suitable for dedicated short‐range communication field.