Open AccessCircular Polarization Dielectric Resonator Antenna Excited by Single Loop Feed
Author(s) -
Jeon Sinhyung,
Choi Hyengcheul,
Kim Hyeongdong
Publication year - 2009
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.09.0208.0328
Subject(s) - dielectric resonator antenna , excited state , circular polarization , axial ratio , bandwidth (computing) , optics , physics , resonator , turnstile antenna , loop antenna , dielectric , dielectric resonator , antenna (radio) , microstrip antenna , coaxial antenna , electrical engineering , telecommunications , engineering , optoelectronics , microstrip , atomic physics
A new feeding method for the circular polarization (CP) dielectric resonator antenna (DRA) is proposed in this letter. Two orthogonal modes (TE x δ11, TE y 1δ1, ) of the rectangular DRA are excited by a 90° phase difference of the differential and common modes currents of the proposed feeding structure. To demonstrate the good CP performance of the proposed method, a right‐hand CP DRA for a global positioning system was designed. The impedance bandwidth of the proposed antenna for S 11 <−10 dB and 3 dB axial ratio bandwidth are about 5.4% and 1.95% at 1.57 GHz, respectively.