Glue-free Technology for Hybrid Dielectric Resonator Antenna (DRA) and Array Designs

This work presents the design of a glue-free hybrid DRA array which utilizes an unconventional radiating mode HEM
12δ
. Special care has been exercised to realize the above mode in a cylindrical DRA to ensure a relatively higher gain over a wide bandwidth. A robust mechanism has also been investigated for mounting a 2×2 hybrid DRA array, which attains a gain of nearly 14 dBi together with a 10% operating bandwidth. Experimental validation of the proposed design has been included.