Abstract
A Novel Design using two feed structure for Ultra Wide Band Antenna with band notch characteristics is being presented in this paper. The simulated antenna so designed have a compact small physical size of 16 mm (L) × 20 mm (W) × 1.6 mm (h) of the overall design with the patch size as 11.86 mm (L) × 8.96 mm (W). The antenna is designed to simulate at 10 GHz. The substrate used is Duroid™ with a relative permittivity of (εr=2.2) and the return loss so measured is calculated below -10 dB for the range 3.1-19.53 GHz with band notching in the frequency band 5.1-5.8 GHz (i.e. WLAN). To achieve such UWB antenna with band notch, the three concepts used are introduced, the first one is using two feeding structure, the second one is using steps at the bottom of the patch, introducing steps at the bottom centre of the patch for band notching. The final impedance bandwidth so measured is 145 % which is a very high bandwidth so obtained. The optimized antenna designed can be used in any of the wireless device for UWB applications.
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