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A high gain simple cubic Dielectric Resonator Antenna with parasitic metal strip for ISM band WLAN applications

A simple cubic shaped dielectric resonator antenna (DRA) resonating at 2.45GHz with 7.3dB Gain and 534MHz Bandwidth is presented in this paper for WLAN applications. In this design, a new concept of enhancing antenna Gain by using a small parasitic metal strip, coated on the cubic DR surface near to ground plane for steering the electromagnetic beam in opposite direction is introduced. The antenna is simulated with and without parasitic metal strip and a difference in antenna Gain has been observed, which shows that parasitic metal strip plays his role in increasing the antenna Gain. A micro strip line and a slot coupled aperture is used as a feeding structure for the cubic shaped DRA. The simulated common bandwidth of 534MHz and 7.3dB antenna Gain in ISM-band is obtained. This antenna presents better Bandwidth and Gain in ISM-band.