Theory of aperture-coupled hemispherical dielectric resonator antennas with radiating elements

Authors: Ahmad Hosseinbeig, Manoochehr Kamyab, Javad S. Meiguni

Abstract:
A new approach based on hybrid volume-surface integral equation (VSIE) formulation in combination with spherical dyadic Green’s function (DGF) is presented in this paper to analyze aperture-coupled multilayer hemispherical dielectric resonator antennas (DRA) with conformal conducting patches. Hybrid VSIE is used for the planar part of the structure and is solved with the aid of spatial-domain method of moments (MoM) in order to compute magnetic surface current in a slot cut in a finite planar perfect electric conductor (PEC) sheet. Multilayer spherical electromagnetic DGFs are used to compute loading effects of hemispherical dielectric resonators and conformal patches on antenna characteristics. The effects of variation in some parameters of the structure on the return loss of the antenna are studied. Accuracy of the presented method is validated by comparing the results obtained from the proposed method with those of CAD simulations.

Keywords:
Aperture-coupled dielectric resonator antenna
Dyadic Green’s function
Volume-surface integral equation

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 11, November 2013)

Publisher: Elsevier

ISSN Information: 1434-8411

Theory of aperture-coupled hemispherical dielectric resonator antennas with radiating elements

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