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Frequency reconfigurable antenna for cognitive radios with sequential UWB mode of perception and multiband mode of operation

Published online by Cambridge University Press:  07 August 2018

Ali Mansoul Open the ORCID record for Ali Mansoul [Opens in a new window]  and
Farid Ghanem
Ali Mansoul*
Affiliation:
Division Telecom, Centre de Développement des Technologies Avancées – CDTA, PO. Box 17 Baba-Hassen, Algiers 16303, Algeria
Farid Ghanem
Affiliation:
Telecom Product Direction, R&D&I, Brandt Group, Cevital Industry Pole, Garidi II, Algiers, Algeria
*
Author for correspondence: Ali Mansoul, E-mail: [email protected]
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Abstract

In this work, an UWB/narrow band reconfigurable elliptical-shaped monopole antenna for cognitive radio applications with sequential perception and operation modes is presented. The proposed approach consists in integrating a reconfigurable filter, in an UWB antenna ground plan, by the mean of four horizontal slots and integrated switches that allow inserting/removing/varying zeros and poles in the frequency response. By acting on the slot lengths in order to alter their resonance frequencies, the different switch configurations allow the antenna to switch between an UWB mode that could be used for the perception (sensing) and different narrowband modes, mono-band and dual-band, that could be used for the operation at 2.4 or/and 3.5 GHz. To validate the concept, an experimental prototype has been fabricated and a good agreement between the simulated and the measured S-parameters has been obtained. While the presented work uses the presence/absence of a perfect conductive strip (PEC) to model real switch operation, it is believed that the obtained results conjugated with previous work using real switches on a very similar structure allows validating approach.

Keywords

Antenna designfiltersmodeling and measurements
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 9 , November 2018 , pp. 1096 - 1102
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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