COMPARATIVE STUDY OF DUAL BAND RECTANGULAR, CYLINDRICAL AND TRIANGULAR DIELECTRIC RESONATOR ANTENNAS (DRA)

Abstract

A comparison of Dual Band Rectangular, Cylindrical and Triangular Dielectric Resonator Antenna coupled to a narrow slot aperture that is fed by a microstrip line for C and X Band operation is proposed in this paper. C and X Bands are microwave bands that span 4-8 GHz and 8-12 GHz, respectively. Antenna constraints, such as dimensions and frequencies, are determined using a mathematical formulation. The software package used to design the three DRA shapes is CST Microwave Studio. The Bandwidth, Gain and Directivity of three shapes of DRA are evaluated, and it is finally observed that the Triangular DRA has a wider bandwidth than Rectangular and Cylindrical, while Rectangular DRA has a high value of Directivity and Gain at some Resonant Frequencies. The results of the present work may provide design guidelines for the development of efficient DRA at C and X Band frequency operations, and designers should have to make a tradeoff between Bandwidth and Directivity and Gain, depending upon their requirements.

Index Terms: Bandwidth, Cylindrical Dielectric Resonator Antenna (CDRA), Dielectric Resonator Antenna (DRA), Directivity, Gain, Rectangular Dielectric Resonator Antenna (RDRA), Triangular Dielectric Resonator Antenna (TDRA).

 https://doi.org/10.5281/zenodo.17818704