Abstract-A compact dual band notched Ultra-wideband (UWB) antenna with multiple Hilbert curve slots is proposed that exhibits an impedance bandwidth from 2.5 GHz to 12 GHz Hilbert curve slots result in band notch in the frequency range 5.15-5.85 GHz assigned to IEEE 802.11a and HYPERLAN/2 as well as 7.9-8.4 GHz band assigned to X-band uplink satellite communication systems. The antenna gain varies from 3 dBi to 5 dBi over the operating frequency. Stable radiation patterns throughout its operating frequency are obtained Over all antenna size is 25 mm by 45.75 mm including the ground plane. Simulation and measured result of the proposed antenna are in good agreement.

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