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2013-05-25

Broadband Circularly Polarized Dielectric Resonator Antenna with Annular Slot Excitation

By Zheng Zhang, Xiao-Ming Wang, Yong-Chang Jiao, and Zi-Bin Weng
Progress In Electromagnetics Research C, Vol. 40, 105-117, 2013
doi:10.2528/PIERC13032701

Abstract

A broadband circularly polarized (CP) cylindrical dielectric resonator antenna (DRA) is presented. The DRA is excited by an L-shaped microstrip feed line through the coupling of an annular slot in the ground plane. The broadband CP radiation is achieved by using two CP radiators, DRA and annular slot. Broadband impedance match is obtained by introducing an impedance transformer. The optimal configuration offers a 3-dB axial ratio bandwidth of 15.9%, from 6.22 to 7.28 GHz, and a 10-dB impedance bandwidth of 21.3%, from 5.78 to 7.16 GHz. The measured results for the constructed prototype are also exhibited and discussed.

Citation


Zheng Zhang, Xiao-Ming Wang, Yong-Chang Jiao, and Zi-Bin Weng, "Broadband Circularly Polarized Dielectric Resonator Antenna with Annular Slot Excitation," Progress In Electromagnetics Research C, Vol. 40, 105-117, 2013.
doi:10.2528/PIERC13032701
http://www.jpier.org/PIERC/pier.php?paper=13032701

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