Open AccessFork‐shaped wideband circularly polarised antenna
Author(s) -
Yu Haiyang,
Yu Junsheng,
Yao Yuan,
Liu Xiaoming,
Chen Xiaodong
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.2368
Subject(s) - wideband , antenna (radio) , optics , physics , circular polarization , fork (system call) , telecommunications , computer science , microstrip , operating system
In this Letter, a fork‐shaped wideband circularly polarised antenna is proposed. Using the fork‐shaped metal wall structure and 45° deflection, the wideband circular polarisation performance of the proposed antenna is achieved. Besides, an antenna prototype working at W‐band is processed. The right‐hand circularly polarised bandwidth (axial ratio < 3 dB) and impedance bandwidth (S11 < −10 dB) of the antenna are both measured as 38.1% (75–110 GHz). The measured gain is 10.7–14.2 dBic (±0.5 dBic). The proposed antenna exhibits a simple structure, which is easy to process. This proposed wideband circularly polarised horn antenna can have wide applications for millimetre and sub‐millimetre wave bands.