Design of a new broadband dielectric resonator antenna

In this paper, a new microstrip broadband antenna is proposed. This antenna was numerically designed using Ansoft HFSS simulation software package. The investigated antenna uses a dielectric resonator, a microstrip fed stepped patch, and an intermediate substrate to widen the bandwidth. A parametric study was performed to optimize the proposed design. Then, based on the optimised design, an antenna prototype was fabricated and measured. Simulations and measurements were carried out, and the comparison between them shows a good agreement. Using this approach, a fractional bandwidth of 42 % at the center frequency of 9.64 GHz was achieved.