A Low Profile Modified Y-shaped RDRA for Triple-band Wireless Applications

Abstract

In this paper, the authors present a triple-band low-profile modified Y-shaped rectangular dielectric resonator antenna (RDRA) for various wireless applications. In order to excite the proposed geometry, the trapezoidal-shaped patch is introduced. This DR excites $\mathbf{T E}_{\delta 11}$ mode, at a first resonant frequency of 2:5 GHz. The proposed design operates in three frequency bands, i.e. 2:35 - 2:68 GHz, 3:92 - 4:20 GHz, and 5:27 - 5:87 GHz with the fractional bandwidth of 14%, 8% and 12%, respectively. It also provides good gain and more than 85% of radiation efficiency with a better radiation pattern at all the resonating points. The proposed antenna is suitable for different wireless applications such as WLAN (5:2 GHz),WiMAX (2:6=3:5=5:5 GHz).