volume | PIER Journals

Abstract

In this paper, theoretical and simulation studies on rectangular and annular dielectric resonator antenna (DRA) made of TiO₂ was reported. The ceramic was fabricated by solid state reaction at 1200^oC. The structural and dielectric properties were investigated by X-Ray Diffraction (XRD), Field Emission Electron Microscopy (FESEM) and network Analyzer. The XRD results showed the presence of rutile phase and the microstructure comprised of fine grain (0.2-0.5 μm) and large grain 1.0-1.5 μm. The rectangular and annular shape TiO₂ DRA with high dielectric constant (ε=84) and low loss tangent (0.080) were fed with 50Ω microstrip transmission line and comparision between the various shape were investigated. The return loss, input impedance and radiation pattern TiO₂ DRA was studied. Design simulation results using CST Microwave Studio 2008 also was presented.

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Dr. Srimala Sreekantan

Dr. Yong Khai Ling

Dr. Zainal Arrifin Ahmad

Dr. Mohd Fadzil Ain

Dr. Mohamad Ariff Othman

Dr. Syed Idris Syed Hassan