Open AccessMicrostrip fed planar endfire circularly polarised antenna with enhanced bandwidth
Author(s) -
Yao Yali,
Zhang Fushun,
Zhang Fan
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.2017.0237
Subject(s) - microstrip antenna , optics , ground plane , wideband , bandwidth (computing) , microstrip , patch antenna , physics , planar , coaxial antenna , optoelectronics , antenna (radio) , telecommunications , computer science , computer graphics (images)
A wideband planar endfire circularly polarised loop antenna is proposed. The antenna is fed by a microstrip line with a novel ground plane instead of a coaxial probe. The microstrip line part and the loop part generate the vertical polarisation and the horizontal polarisation, respectively. Two stubs added on the loop contribute to the bandwidth improvement. The proposed antenna achieves wide impedance bandwidth (| S 11| < −10 dB) and wide 3‐dB axial ratio bandwidth, both of which can cover the frequency range from 8.0 to 12.5 GHz (43.9%).