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Abstract
A single-feed wideband circularly polarized Spidron fractal slot antenna with a grooved dielectric resonator is presented. To realize a wideband axial ratio, the circular polarizations of both a Spidron fractal slot and a grooved rectangular dielectric resonator are merged. The proposed antenna is excited by a simple 50-Ω microstrip feed line which is located underneath the Spidron fractal slot. A prototype of the proposed antenna is fabricated and tested. The measured −10 dB reflection coefficient bandwidth and 3 dB axial ratio bandwidth are 40.33% (1.94–2.92 GHz) and 23.75% (2.30–2.92 GHz), respectively. The measured peak gain of the antenna is 4.23 dBic.
Additional information
Funding
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) [grant number 2014R1A5A1011478].