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Optimising the performance of an optically controlled microwave switch

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conference contribution
posted on 2017-09-20, 11:25 authored by Emma K. Kowalczuk, Rob Seager, Chinthana PanagamuwaChinthana Panagamuwa, Kevin BassKevin Bass, J. C. Vardaxoglou
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.



  • Mechanical, Electrical and Manufacturing Engineering

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LAPC 2012 - 2012 Loughborough Antennas and Propagation Conference


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.




  • AM (Accepted Manuscript)

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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/

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© 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.




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