Abstract

In this work, a dual band rectangular slotted Electromagnetic Band Gap (EBG) structure has been designed and analyzed the performance of microstrip patch antenna for this EBG structure. The antenna bandwidth and gain have been improved by incorporating four rectangular slots and one U-shaped slot in each EBG cell. Without the slot, the microstrip patch antenna only radiates at nearly 3GHz. Our proposed antenna achieves a gain of 2.42dB and 2.64dB at 3.09GHz and 5.44GHz in the S-band and C-band, respectively. The comparison between proposed EBG structure and mushroom type EBG structure has been investigated. The impedance bandwidth is extended by 3.24% and 5.33% at 3.09GHz and 5.44GHz, respectively.

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