Abstract
The rigorous moment method analysis of probe-fed rectangular dielectric resonator antenna on a finite ground plane is presented. We modeled the exact structure of coaxial cable and antenna. The antenna, coaxial cable and ground plane are modeled as surface electric currents, but the dielectric resonator and internal dielectric of coaxial cable are assumed as a volume polarization current. The dielectric resonator (DR) is treated via a set of combined field integral equations. The associated coupling is then formulated with sets of integral equations. The coupled integral equations are solved by the method of moments (MoM). The effects of air gap and finite ground plane on resonance frequency, input impedance, E-plane and H-plane patterns and moment current of the objects are presented. Finally, we demonstrate some important conceptual issues for designing and analyzing of RDRA in communication circuits such as mobile systems, IF-amplifiers and phase detection. Our methods and results obtained from the MoM have a very good agreement with measurements and are higher accurate and fast than simulated results with the other softwares.
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