Abstract
A metamaterial-based novel compact microstrip antenna is presented for Wi-Max applications. The antenna consists of a layer of metamaterial made by etching a crossed-shaped slots, on the the ground plane, respectively. The shunt inductance developed due to the patterned ground plane lead to the lefthanded behaviour of the metamaterial. The proposed antenna has a compact size of 45.4 × 31.6 × 1.6 and is fed by a 50 Ω microstrip line. Radiating patch is fractal antenna of star shape with 6mm side length. The impedance bandwidth (−10 dB) is from 3 GHz to more than 14 GHz with maximum radiation in the horizontal plane and tends towards a directional pattern as the frequency increases. Maximum gain 15.8533db obtained from fractal antenna.
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