In this letter, the proposed antenna has four frequency bands centered at 0.9S, 2.S, 3.7, 4.7 GHz and has very a compact size of 30*40*1.57mm3 including the ground plane and the above patch. Array of I slots are cut into ground plane of different lengths and S shape is cut into patch. Proposed antenna
has-l0dB impedance bandwidth of 1006 MHz (0.S7-1.93GHz),
600MHz (2.54-3.14GHz), 300MHz(3.6-3.9GHz), 300 MHz(4.5-4.SGHz) which covers GSM bands, WiMAX and other wireless
application. Fabricated prototype is also presented which has
return loss of S.42 dB at 1.70 GHz, 1l.SOdB at 4.247 GHz and 24.90 dB at 5.lOS GHz. E plane and H plane radiation pattern are shown.
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