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The Scientific World Journal
Volume 2014, Article ID 563830, 7 pages
http://dx.doi.org/10.1155/2014/563830
Research Article

Design and Realization of a Planar Ultrawideband Antenna with Notch Band at 3.5 GHz

1Departemnt of Physics, University of Chittagong, Chittagong 4331, Bangladesh
2Space Science Centre (ANGKASA), Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
3Department of Electrical, Electronic & Systems Engineering, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
4School of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
5Center of Artificial Intelligent Technology, Faculty of Information Science & Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia

Received 5 February 2014; Revised 15 June 2014; Accepted 20 June 2014; Published 15 July 2014

Academic Editor: Jaume Anguera

Copyright © 2014 Rezaul Azim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A small antenna with single notch band at 3.5 GHz is designed for ultrawideband (UWB) communication applications. The fabricated antenna comprises a radiating monopole element and a perfectly conducting ground plane with a wide slot. To achieve a notch band at 3.5 GHz, a parasitic element has been inserted in the same plane of the substrate along with the radiating patch. Experimental results shows that, by properly adjusting the position of the parasitic element, the designed antenna can achieve an ultrawide operating band of 3.04 to 11 GHz with a notched band operating at 3.31–3.84 GHz. Moreover, the proposed antenna achieved a good gain except at the notched band and exhibits symmetric radiation patterns throughout the operating band. The prototype of the proposed antenna possesses a very compact size and uses simple structures to attain the stop band characteristic with an aim to lessen the interference between UWB and worldwide interoperability for microwave access (WiMAX) band.