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Optically controlled UWB antenna using photonic crystal waveguides

Published online by Cambridge University Press:  11 May 2017

Heba Zakaria ,
Moataza Hindy  and
Adel El-Henawi
Heba Zakaria
Affiliation:
Faculty of engineering, Ain Shams University, Cairo, Egypt
Moataza Hindy*
Affiliation:
Electronics research Institute, Cairo, Egypt
Adel El-Henawi
Affiliation:
Faculty of engineering, Ain Shams University, Cairo, Egypt
*
Corresponding author: M. Hindy Email: hindymoataza@hotmail.com
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Abstract

This paper presents a new optically controlled reconfigurable ultra-wideband antenna using reconfigurable optical router with photonic crystal substrate. The proposed antenna has three optical switches. The optical switches are made by placing silicon wafers over three slots etched on the resonator. The coplanar fed microstrip antenna can work at eight modes using optically controlled switches. This design proposes triple narrow notched bands at center frequencies 3.5 GHz “WiMAX”, 5.5 GHz “WLAN” and 8.4 GHz “X-band satellite communication”. The proposed antenna satisfies the voltage standing wave ratio requirement of <2 in the frequency band between 2.6 and 11.8 GHz except for the three rejected bands. According to the incident light, the physical properties of these switches can be changed from an insulator state (OFF state) to a near-conducting state (ON state). The incident light is coupled to the optical switches using a reconfigurable optical router. The proposed antenna provides high gain, and high efficiency all over the frequency band excluding the rejected bands.

Keywords

Antenna designModeling and measurementsMicrowave photonics
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Special Issue 8: Biomedical Applications of RF/Microwave and Optics Technologies , October 2017 , pp. 1661 - 1666
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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