IEEE Antennas and Wireless Propagation Letters · 2014 · 97 citations · 13 references
EngineeringElectrical EngineeringAntennasElectronic MaterialsMicrowave EngineeringAntenna DesignAntenna PolarizationDielectric MaterialsDielectricsMicrostrip AntennasPlanar AntennasCircularly Polarized AntennasDielectric Resonator Antenna DesignDielectric Resonator AntennasDielectric ResonatorsDual-band Antenna DesignDual-polarized AntennasRectangular Aperture Antennas
This letter presents a new dual-band circularly polarized (CP) dielectric resonator antenna (DRA). The dual-band design utilizes the quasi- TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">111</sub> and -TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">113</sub> modes of the rectangular DRA, which is coupled by a simple underneath rectangular aperture. Two opposite corners of the DRA are removed at 45 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">°</sup> to obtain CP fields. A diagonal groove is introduced at the top face of the DRA to facilitate tuning of the DRA. A design guideline of the dual-band CP DRA is given. The reflection coefficient, radiation pattern, axial ratio, and antenna gain of the DRA are simulated and measured, with good agreement between them.
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