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Sensors 2018, 18(2), 383; https://doi.org/10.3390/s18020383

A Triaxial Applicator for the Measurement of the Electromagnetic Properties of Materials

1
Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA
2
Department of Electrical and Computer Engineering, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH 45433-7765, USA
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 17 January 2018 / Accepted: 23 January 2018 / Published: 29 January 2018
(This article belongs to the Section Physical Sensors)
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Abstract

The design, analysis, and fabrication of a prototype triaxial applicator is described. The applicator provides both reflected and transmitted signals that can be used to characterize the electromagnetic properties of materials in situ. A method for calibrating the probe is outlined and validated using simulated data. Fabrication of the probe is discussed, and measured data for typical absorbing materials and for the probe situated in air are presented. The simulations and measurements suggest that the probe should be useful for measuring the properties of common radar absorbing materials under usual in situ conditions. View Full-Text
Keywords: permeability; permittivity; material characterization; microwave measurements; S-parameters; calibration; two-port networks; electromagnetic analysis permeability; permittivity; material characterization; microwave measurements; S-parameters; calibration; two-port networks; electromagnetic analysis
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Karuppuswami, S.; Rothwell, E.; Chahal, P.; Havrilla, M. A Triaxial Applicator for the Measurement of the Electromagnetic Properties of Materials. Sensors 2018, 18, 383.

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