Title :
Circularly Polarized Spidron Fractal Dielectric Resonator Antenna
Author :
Altaf, Amir ; Youngoo Yang ; Kang-Yoon Lee ; Keum Cheol Hwang
Author_Institution :
Div. of Electron. & Electr. Eng., Dongguk Univ. - Seoul, Seoul, South Korea
fDate :
7/7/1905 12:00:00 AM
Abstract :
In this letter, a circularly polarized Spidron fractal dielectric resonator antenna is presented. A wide 3-dB axial ratio (AR) bandwidth is realized by merging a Spidron fractal dielectric resonator and a C-shaped slot that can produce circular polarization. The proposed antenna is excited through the coupling between a C-shaped slot in the ground plane and a 50-Ω microstrip feeding line. A prototype of the antenna is fabricated and tested. Reasonable agreement is achieved between the measurement and simulation. The experimental results show that the proposed antenna has a -10- dB reflection bandwidth of 37.29% (4.32-6.30 GHz) and a 3-dB AR bandwidth of 11.57% (5.13-5.76 GHz). The measured gain of the antenna ranges 2.20 dBic to 3.16 dBic within the AR bandwidth.
Keywords :
antenna feeds; dielectric resonator antennas; electromagnetic wave polarisation; fractal antennas; microstrip lines; microwave antennas; C-shaped slot; bandwidth 4.32 GHz to 6.30 GHz; circularly polarized antenna; dielectric resonator antenna; ground plane; microstrip feeding line; resistance 50 ohm; spidron fractal antenna; Antenna measurements; Broadband communication; Dielectric resonator antennas; Fractals; Polarization; C-shaped slot; circular polarization; dielectric resonator antenna (DRA); spidron fractal;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2427373
