Hybrid Rectangular Dielectric Resonator Antenna for Multiband Applications

Abstract

This article examines the triple-band rectangular dielectric resonator antenna (RDRA) excited with novel composite feeding structure (combination of inverted H-shaped monopole and vertical strip). Three attractive features of proposed design are as follows: (i) composite feeding structure creates dual higher order modes in RDRA (i.e., TEδ,2,1 x and TEδ,4,1x); (ii) triple-band characteristic is achieved with the help of hybrid antenna concept; and (iii) adjacent bands with higher order modes have been merged to enhance the bandwidth. Simulated outcomes have been practically confirmed with the help of developed prototype of proposed antenna. The proposed RDRA is operated over three frequency bands, i.e., 1.45–1.63 GHz, 3.62–4.1 GHz, and 4.55–5.86 GHz. The proposed design is quite suitable for WLAN (5.2/5.8 GHz), WiMAX (5.5 GHz), AMSAT (5.6 GHz), GPS (1.57–1.58 GHz), point-to-point microwave, and telemetry in the USA (4.44–4.99 GHz).