Thesis-2006-Chauraya.pdf (6.88 MB)
0/0

Photoconductive switching using silicon and its applications in antennas and reconfigurable metallodielectric Electromagnetic Band Gap (EBG) structures

Download (6.88 MB)
thesis
posted on 01.08.2018 by Alford Chauraya
The aims of this research work were to investigate the microwave properties of photoconductive semiconductor switches (PCSS), and how the properties might be used to optically control microwave and millimetre wave devices. Tunable devices (such as antennas, filters and metamaterials) have the ability to increase flexibility performance in multiband systems for example. In this thesis the performance of microwave switches from microstrip discontinuities, with high resistivity silicon dice placed cross the gaps were investigated. Under optical illumination, the electrons in silicon can be excited from the valence band to the conduction band. This photoconductivity in silicon has been employed to design a small microwave switch that can be operated using optical signal. The optically activated switch offers a wide range of applications. Potential applications have been demonstrated in integrating the microswitch in microstrip patch antenna, microstrip couple line filter, and Electromagnetic Band Gap (EBG) structures.

Funding

Science and Technology Facilities Council, Rutherford Appleton Laboratories (RAL). Scrubbs and Usaramo Estates (Zimbabwe). European Space Agency (ESA). Antrum Ltd (Loughborough).

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Publisher

© A. Chauraya

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2006

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.

Language

en

Exports

Logo branding

Keyword(s)

Exports