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In wireless communication, there are several types of microstrip antennas; the most common is microstrip patch antenna. In this paper, the authors present a new design of a compact, lightweight, low-cost, multi standard antenna for WiMAX applications. Measured and simulated results of the resonant frequency, return loss, radiation patterns, gain and efficiency are presented using IE3D software. Two L slits are introduced at the edge of the patch to reduce the resonant frequency. For the proposed antenna four resonant frequencies are obtained at 2.54 GHz, 4.2 GHz, 5.58 and 7.4 GHz with bandwidth of 12 MHz, 22 MHz, 78.63 MHz, 116 MHz & return loss - 21.81dB, - 12.06 dB, - 15.56 dB & - 19.68 dB respectively.
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