Open AccessBroadband circularly polarised square slot antenna fed by coplanar waveguide
Author(s) -
Liu Y.W.,
Hsu P.
Publication year - 2013
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.2013.0905
Subject(s) - coplanar waveguide , broadband , slot antenna , axial ratio , optics , circular polarization , square (algebra) , physics , electrical impedance , bandwidth (computing) , turnstile antenna , antenna (radio) , microstrip antenna , telecommunications , microstrip , engineering , mathematics , microwave , geometry , quantum mechanics
A broadband circularly polarised square slot antenna fed by a coplanar waveguide (CPW) from a corner of the slot is proposed. A check‐shaped strip with its vertex connected to the protruded signal strip of the CPW is used to achieve circular polarisation. The measured 3 and 1 dB axial ratio bandwidths are 48 and 21.3%, respectively, and the input impedance bandwidth (| S 11 | ≤ − 10 dB) is 73.9%, which covers the entire circular polarisation band.