Broadband compact stacked T-shaped DRA with equilateral-triangle cross sections

A compact T-shaped dielectric resonator antenna (DRA) with two equilateral-triangle cross sections is investigated in this letter. The DRA is vertically placed on a finite ground plane and excited by a coaxial probe to provide broadband and conical radiation patterns. In order to examine the proposed design, simulations and measurements were employed to investigate the proposed antenna, and a good agreement between them was obtained. The proposed design produces an impedance bandwidth of more than 60% from 1.6 to 3.1 GHz, which effectively covers several promising application bands in contemporary wireless communication systems, such as digital communication systems (DCS: 1710-1880 MHz), personal communication systems (PCS: 1850-1990 MHz), universal mobile telecommunication systems (UNITS: 1920-2170 MHz), wireless local area networks (WLANs: 2.4-2.485 GHz). Additionally, stable conical patterns were also obtained within the interest frequency band.