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Reconfigurable microstrip slot antenna with DGS for UWB applications

Published online by Cambridge University Press:  10 February 2017

Mehri Borhani Kakhki  and
Pejman Rezaei
Mehri Borhani Kakhki*
Affiliation:
Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran. Phone: +989158360574
Pejman Rezaei
Affiliation:
Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran. Phone: +989158360574
*
Corresponding author: M. Borhani Kakhki Email: borhani.mehri@semnan.ac.ir
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Abstract

In this paper, a frequency reconfigurable microstrip slot antenna for ultra-wideband applications with switchable band-notch functions is designed and manufactured. To generate a wide usable fractional bandwidth of 3 to over 13.6 GHz, square patch transforms to a fork-shaped patch, also two triangular-shaped strips have been added at above sections of rectangular slot on the ground plane. Band rejections are obtained by adding two inverted L-shaped strips in the fork-shaped patch and one L-shaped defected ground structure. Moreover, by implementation of two PIN diodes within the antenna structure, four switchable frequency responses are achieved. The designed antenna has simple structure and a small size of 20 × 20 × 0.8 mm3 while providing band rejection characteristics at WiMAX (Worldwide Interoperability for Microwave Access) and WLAN (Wireless Local Area Networks) systems.

Keywords

Reconfigurable antennaUltra-wideband (UWB)Switchable frequencyPIN diodeBand notchedDefected ground structure (DGS)
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Special Issue 7: EuCAP 2016 special issue , September 2017 , pp. 1517 - 1522
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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