Front-End Circuit Modeling for Low-Z Capacitance Measurement Applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Applications like electrical capacitance tomography (ECT) rely on capacitance measurements with a good signal to noise ratio. In Low-Z measurement circuitry the measurement frequency can be directly used to increase the signal amplitudes. Simple front-end circuit models consider the behavior of all components by means of lumped capacitors. However, for higher system frequencies and long instrumentation lines, transmission line effects can appear. In this paper we develop a front-end circuit model for Low-Z capacitance measurement systems, which considers wave propagation effects due to transmission lines. We demonstrate the applicability of our modelling approach by means of measurements and show further, that the transmission line characteristic can be used to extend the operational limits of the measurement system by means of pre tuning techniques.
Original languageEnglish
Title of host publicationI2MTC 2016 Proceedings
Pages1400 - 1405
Number of pages6
DOIs
Publication statusPublished - 2016
EventIEEE 2016 International Instrumentation and Measurement Technology Conference - TICC - Taipei International Convention Center, Taipei, Taiwan, Province of China
Duration: 23 May 201626 May 2016
http://2016.imtc.ieee-ims.org/

Conference

ConferenceIEEE 2016 International Instrumentation and Measurement Technology Conference
Abbreviated titleI2MTC
CountryTaiwan, Province of China
CityTaipei
Period23/05/1626/05/16
Internet address

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