Title :
Numerical modeling of dielectric-resonator antennas in a complex environment using the method of moments
Author :
Liu, Zhijun ; Chew, Weng Cho ; Michielssen, Eric
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
Aperture coupled dielectric resonator antennas (DRAs) that reside above a layered background are analyzed using the method of moments (MoM). Dyadic Green´s functions for the layered medium are derived in a simple and effective manner and the Rao-Wilton-Glisson (RWG) function is used to expand both electric and magnetic currents. A transmission-line technique is used to compute the antenna-input impedance. Numerical results obtained for both hemispheric and rectangular DRAB agree well with published measurement results
Keywords :
Green´s function methods; UHF antennas; antenna theory; dielectric resonators; electric impedance; inhomogeneous media; method of moments; microwave antennas; transmission line theory; MoM; RWG function; Rao-Wilton-Glisson function; antenna-input impedance; aperture coupled dielectric resonator antennas; complex environment; dyadic Green´s functions; electric currents; hemispheric DRA; layered medium; magnetic currents; method of moments; numerical modeling; rectangular DRA; transmission-line technique; Aperture antennas; Aperture coupled antennas; Couplings; Dielectric resonator antennas; Green´s function methods; Magnetic analysis; Moment methods; Numerical models; Transmission lines; Transmitting antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
