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Vertical-Strip-Fed Broadband Circularly Polarized Dielectric Resonator Antenna
Amir Altaf1, Jin-Woo Jung2, Youngoo Yang3
1Division of Electronics and Electrical Engineering, Dongguk University, Seoul 100-715, Korea. amiraltaf@dongguk.edu.
Abstract:
A vertical-strip-fed dielectric resonator antenna exhibiting broadband circular polarization characteristics is presented. A broad 3 dB axial ratio bandwidth (ARBW) is achieved by combining multiple orthogonal modes due to the use of a special-shaped dielectric resonator. The proposed antenna is fabricated to evaluate its actual performance capabilities. The antenna exhibits a measured 3 dB ARBW of 44.2% (3.35-5.25 GHz), lying within a -10 dB reflection bandwidth of 82.7% (2.44-5.88 GHz). The measured peak gain within 3 dB ARBW is found to be 5.66 dBic at 4.8 GHz. The measured results are in good agreement with the simulated results.