Metamaterial Inspired Star Shape Fractal Antenna for Gain Enhancement
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A metamaterial-based novel compact microstrip antenna is presentedfor ultra-wideband (UWB) 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 developeddue to the patterned ground plane lead to theleft-handed behaviour of the metamaterial. The proposed antenna hasa compact size of 45.4 × 31.6 × 1.6 and is fed by a 50 Ω microstripline. Radiating patch is fractal antenna of star shape with 6mm side length. The impedance bandwidth (−10 dB) is from 3 GHz tomore than 14 GHz with maximum radiation in the horizontal planeand tends towards a directional pattern as the frequency increases. Maximum gain 15.8533db obtained from fractal antenna
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