Circular Polarization Dielectric Resonator Antenna Excited by Single Loop Feed

ETRI Journal

关键词: circular polarization;    right-hand circular polarization (RHCP) antenna;    global positioning system (GPS) antenna;    Dielectric resonator antenna;   

Others  :  1185857
DOI  :  10.4218/etrij.09.0208.0328

【 摘 要 】

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-degree 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 S₁₁<-10 dB and 3 dB axial ratio bandwidth are about 5.4% and 1.95% at 1.57 GHz, respectively.

   

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