Active Reduction of Apparent Cable Capacitance

Alexander Melin; Michael Roberts; Roger Kisner

doi:10.3390/s23198319

Active Reduction of Apparent Cable Capacitance

Alexander Melin, Michael Roberts, Roger Kisner

Multimodal Sensor Analytics

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents a method for reducing apparent cable capacitance seen by sensors. The proposed method is designed for sensing in extreme environments including ultra-high temperatures, but can be applied in benign environments as well. By reducing the cable capacitance, high speed signals can be transmitted over longer distances, allowing the application of advanced control systems that require high bandwidth data for stable operation. A triaxial cable with an associated guard circuit is developed that actively reduces cable capacitance while also rejecting extraneous electric and magnetic interference on the signal. The active capacitance reduction method developed is tested experimentally and shown to reduce apparent cable capacitance to two percent of the static value.

Original language	English
Article number	8319
Journal	Sensors (Switzerland)
Volume	23
Issue number	19
DOIs	https://doi.org/10.3390/s23198319
State	Published - Oct 2023

Funding

The information, data, or work presented herein was funded in part by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award Number DE-AR0000981. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Funders	Funder number
U.S. Department of Energy	DE-AR0000981
Advanced Research Projects Agency - Energy

Keywords

bandwidth
capacitance reduction
coaxial cable
triaxial cable

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10.3390/s23198319

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author = "Alexander Melin and Michael Roberts and Roger Kisner",

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AB - This paper presents a method for reducing apparent cable capacitance seen by sensors. The proposed method is designed for sensing in extreme environments including ultra-high temperatures, but can be applied in benign environments as well. By reducing the cable capacitance, high speed signals can be transmitted over longer distances, allowing the application of advanced control systems that require high bandwidth data for stable operation. A triaxial cable with an associated guard circuit is developed that actively reduces cable capacitance while also rejecting extraneous electric and magnetic interference on the signal. The active capacitance reduction method developed is tested experimentally and shown to reduce apparent cable capacitance to two percent of the static value.

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KW - triaxial cable

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Active Reduction of Apparent Cable Capacitance

Abstract

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Keywords

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