Four element composite triangular dielectric resonator antenna for X-Band applications

Abstract

A four element triangular dielectric resonator antenna (TDRA) with each element made of composite material (i.e. combination of two different dielectric materials) is proposed in the present investigation. The simulation study of the proposed design is carried out through Ansys HFSS numerical simulation software. All triangular elements are excited by 50 Ω coaxial probe. The triangular element consists of two sections. The inner section of triangle touching the probe is made of Li2O-1.94MgO-0.02Al2O3-P2O5 (LMAP) ceramic with ϵr = 6.2 while the outer section is made of teflon (ϵr =2.1). The resonating frequency of 10 GHz and percentage bandwidth of 45.53 % for the proposed antenna is obtained within its operating frequency range 8.04-12.78 GHz. Monopole like radiation pattern with low cross polarization levels and peak gain of 4.94 dB obtained for the proposed antenna reflects its potential for X-Band applications. The simulation results obtained for the proposed antenna are also compared with those for single element composite TDRA having same volume as that of proposed antenna. © 2018 IEEE.