Four-Element Triangular Wideband Dielectric Resonator Antenna excited by a Coaxial Probe

Abstract

This paper numerically examines an array of four dielectric resonant antenna of equilateral triangle shape. The Structure provides wideband low profile monopole-like antenna. As much as 30.90 % matching bandwidth (S11<-10 dB) with monopole-like radiation pattern over the entire band has been achieved with 6.357 dBi peak gain. The geometry is a four equilateral triangular dielectric volume over a ground plane, and is centrally excited by a coaxial probe to provide a broadside radiation pattern. An approximate expression is used to compute the resonance frequency. Results are simulated using CST (Computer Simulation Technology) Microwave Studio Suite 10. Keywords-Dielectric resonator (DR), triangular dielectric resonator antenna (TDRA), S11 (S-Parameter), perfect conductor (PEC), Impedance Bandwidth (IBW).