Title :
Broadband circularly polarised dielectric resonator antenna fed by wideband switched line coupler
Author :
Rong-Cang Han ; Shun-Shi Zhong ; Jing Liu
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China
Abstract :
A dual-feed rectangular dielectric resonator antenna with a wideband switched line coupler is proposed for generating broadband circular polarisation. The new wideband switched line coupler provides good impedance matching, equal power splitting and consistent 90° phase shifting over a wide bandwidth. The proposed antenna exhibits a 3 dB axial ratio bandwidth of 47.69% and an impedance matching bandwidth of 48.46% for a voltage standing wave ratio ≤2.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; circular waveguides; dielectric devices; impedance matching; rectangular waveguides; resonators; axial ratio bandwidth; broadband circular polarisation generation; broadband circularly polarised dielectric resonator antenna; consistent phase shifting; dual-feed rectangular dielectric resonator antenna; equal power splitting; impedance matching; impedance matching bandwidth; voltage standing wave ratio; wide bandwidth; wideband switched line coupler;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.0809
