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01-03-2014 | Issue 1/2014

Wireless Personal Communications 1/2014

Dual Band-Notched Small Monopole Antenna with Enhanced Bandwidth for UWB Applications

Journal:
Wireless Personal Communications > Issue 1/2014
Authors:
Nasser Ojaroudi, Mohammad Ojaroudi

Abstract

This article proposes a novel printed monopole antenna for ultra wideband applications with dual band-notch function. The antenna consists of a disc-shaped radiating patch with a pair of folded strips arms, and a ground plane with a two L-shaped conductor backed plane, which provides a wide usable fractional bandwidth of more than 140 % (2.6–14.43 GHz). In order to generate single band-notch characteristics, we use a modified disc-shaped radiating patch with a pair of folded strips arms also by using this modified radiating patch, additional resonance is excited and hence much wider impedance bandwidth can be produced, especially at the higher band. By adding two L-shaped conductor backed plane in the ground plane a dual band notch function is achieved. The measured results reveal that the presented dual band-notch monopole antenna offers a very wide bandwidth with two notched bands, covering all the 5.2/5.8 GHz WLAN, 3.5/5.5 GHz WiMAX and 4 GHz C bands. The designed antenna has a small size of \(12\times 18\,\hbox {mm}^{2}\).

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