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A low-cost millimeter-wave whispering gallery-mode-based sensor: design considerations and accurate analysis

Published online by Cambridge University Press:  24 May 2012

Aidin Taeb ,
Mohammad Neshat ,
Suren Gigoyan  and
Safieddin Safavi-Naeini
Aidin Taeb*
Affiliation:
Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Canada N2L 3G1. Phone: +1 519 888 4567 ext. 31437
Mohammad Neshat
Affiliation:
Department of Physics and Astronomy, Johns Hopkins University, Baltimore, USA
Suren Gigoyan
Affiliation:
Institute of Radiophysics & Electronics NAS, Ashtarak, Armenia
Safieddin Safavi-Naeini
Affiliation:
Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Canada N2L 3G1. Phone: +1 519 888 4567 ext. 31437
*
Corresponding author: A. Taeb Email: ataeb@maxwell.uwaterloo.ca
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Abstract

A dielectric waveguide-based structure coupled to a whispering gallery mode (WGM) disc resonator is introduced as a low-cost integrable millimeter-wave (mm-wave) bio-sensor. An efficient variational analysis method is developed and applied to the WGM. Three sets of sensors, operating in different ranges of frequency from 85 to 220 GHz, are fabricated and tested. The performance of the fabricated bio-sensor is demonstrated for sensing different concentrations of glucose solution samples at D-band. Also, the sensitivity, selectivity, and repeatability of these sensors are examined.

Keywords

Microwave measurementsPassive components and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 4 , Special Issue 3: European Microwave Week 2011 , June 2012 , pp. 341 - 348
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2012

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