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In this paper, we propose a compact ultra-wideband (UWB) planar monopole antenna with integrated band-notch filtering. The proposed antenna is composed of a rectangular radiating patch, partial ground plane and U-shaped parasitic element on the bottom plane of the antenna symmetrical to the radiating patch. The dimensions of parasitic element have been optimized to achieve band-notch filtering, in order to avoid IEEE 802.11a interference in the frequency range 5.15 to 5.825GHz. The proposed antenna is compact (19x16x1.6mm) and also achieves VSWR ≤ 2 for frequency ranging from 3 to 10.3GHz except for the band-notched frequency. High Frequency Structure Simulator has been used to simulate the proposed antenna and analyze its performance in terms of resonating frequency, VSWR, gain and radiation pattern. Dominant factors affecting the centre frequency and bandwidth of the notched-band are also investigated

A Band-notched Ultra-wideband Compact Planar Monopole Antenna With U-shaped Parasitic Element