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Title: Optimising the performance of an optically controlled microwave switch
Authors: Kowalczuk, Emma K.
Seager, R.D.
Panagamuwa, C.J.
Bass, Kevin
Vardaxoglou, J.C.
Issue Date: 2012
Publisher: © IEEE
Citation: KOWALCZUK, E. ... et al., 2012. Optimising the performance of an optically controlled microwave switch. IN: proceedings of 2012 Loughborough Antennas and Propagation Conference (LAPC 2012), Loughborough, Great Britain, 12-13 November 2012, DOI: 10.1109/LAPC.2012.6402983.
Abstract: Optical control of microwave switches is an appealing concept for use in reconfigurable antennas as it eliminates the need for metallic biasing lines which may affect the performance of the wireless system. The ultimate goal of this study is to minimise insertion loss of a photoconductive microwave switch in the ON state whilst maintaining high isolation in the OFF state. Firstly, a parameter simulation study using different substrate materials, thicknesses and gap widths is presented to obtain optimised S21 results. The best performance is from a 1.2mm line using a 0.3mm gap. Secondly, the effect of passivation and texturisation on the photoconductivity and microwave performance of the silicon die is investigated. Passivation of the sample decreases insertion loss, however texturing the surface increases loss.
Description: © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Version: Accepted for publication
DOI: 10.1109/LAPC.2012.6402983
URI: https://dspace.lboro.ac.uk/2134/26564
Publisher Link: http://dx.doi.org/10.1109/LAPC.2012.6402983
ISBN: 9781467322195
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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