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2013-06-06
Wideband Circularly Polarized Dielectric Resonator Antenna with a Square Spiral Microstrip Feedline
By
Progress In Electromagnetics Research Letters, Vol. 41, 11-20, 2013
Abstract
A rectangular dielectric resonator antenna (DRA) with a square spiral microstrip feedline is investigated in this paper. The design utilizes a feeding structure to excite two resonant modes (TEδ11 and TE1δ1 modes) of the rectangular DRA that are spatially orthogonal in polarization and in phase. The antenna with the proposed feeding structure has provided a measured circular polarization(CP) over a bandwidth of ~15.5% in conjunction with an impedance-matching bandwidth of ~31.25% at the same frequency range. The gain of the dielectric resonator antenna varies between 6.8 and 7.2 dBi across the bandwidth (7.5~8.75 GHz). Reasonable agreement between the simulated and measured results is obtained.
Citation
Lei Zhang, Yong-Chang Jiao, and Zi-Bin Weng, "Wideband Circularly Polarized Dielectric Resonator Antenna with a Square Spiral Microstrip Feedline," Progress In Electromagnetics Research Letters, Vol. 41, 11-20, 2013.
doi:10.2528/PIERL13042802
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