Comparison of Rectangular Dielectric Resonator Antenna Modes using Microstrip Line Feeding at 26GHz

Abstract

In this paper, a study on the Microstrip line feeding technique is done for fundamental mode and higher order mode for single element rectangular dielectric resonator antenna(RDRA) at 26 GHz for 5G and millimetre-wave applications. The dielectric resonator has a dielectric constant of 10 with a loss tangent of 0.002 and is etched on Rogers RT/Duroid 5880 substrate having a thickness of 0.254mm and relative permittivity of 2.2 with a loss tangent of 0.0009. The proposed structures are optimized and simulated using the Ansys HFSS (high-frequency structure simulator) software. The effect of feeding on the bandwidth, S11, gain, and radiation pattern are also examined and analyzed. The simulated results show that the microstrip line provides good performance in terms of high gain in higher order mode while wide bandwidth in fundamental mode and is found suitable for 5G applications.