Open AccessCompact quasi‐Yagi antenna with enhanced bandwidth and stable high gain
Author(s) -
Yang Liu,
Zhuang JianJun
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.3338
Subject(s) - dipole antenna , dipole , loop antenna , bandwidth (computing) , metamaterial , physics , optics , antenna gain , resonator , split ring resonator , antenna measurement , optoelectronics , coaxial antenna , antenna (radio) , electrical engineering , engineering , telecommunications , quantum mechanics
A compact double‐dipole driver is constructed for designing quasi‐Yagi antenna with enhanced bandwidth and stable high gain. It is composed of a magnetic dipole and a folded electric dipole, realised by cylinder dielectric resonator and split‐ring resonator. The two dipoles operate at two close frequencies, leading to bandwidth enhancement. Meanwhile, the gains of the two dipoles are also close so that the stable gain in the operating band is obtained, which can be entirely enhanced by the zero‐index metamaterial in front of the dual‐dipole driver. For demonstration, an antenna prototype centred at about 9.6 GHz is implemented and measured. The simulated and measured results are given, showing good agreement.