Open AccessDesign of high‐gain dual‐band dual‐circular‐polarised antenna using reflective metasurface
Author(s) -
Mao Chenyang,
Yang Yang,
He Xiaoxiang,
Zheng Jingming,
Liu Ting
Publication year - 2017
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.2017.2479
Subject(s) - optics , multi band device , antenna (radio) , physics , microstrip antenna , circular polarization , patch antenna , helical antenna , antenna factor , microstrip , electrical engineering , engineering
A novel design of high‐gain dual‐band dual‐circular‐polarised antenna loaded with reflective metasurface is proposed. The proposed antenna consists of a linear‐polarised coplanar waveguide antenna with a polarisation‐switched metasurface structure. The metasurface is composed of 25 unit cells arranged in a 5 × 5 layout and each unit cell is a pair of symmetrical semi‐circle loop with a diagonal microstrip, which is designed to adjust the axial ratio for dual‐band circular polarisation. Simulated result shows that the impedance bandwidth of the proposed antenna is about 63% from 3.8 to 7.3 GHz, and the average boresight gain has a great enhancement of about 4 dBi. The proposed antenna possesses the characteristic of right‐handed circular polarisation from 4.15 to 4.45 GHz, while the left‐handed circular polarisation is from 5.75 to 6.4 GHz. The simulated and measured results are in good agreement so that the performance of the proposed antenna can be confirmed.