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Microwave measureme...
Microwave measurement system for dispersive dielectric properties of densely packed pellets
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- Cerullo, Livia, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- WINGES, JOHAN, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rylander, Thomas, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- McKelvey, Tomas, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gradinarsky, Lubomir, 1970 (author)
- AstraZeneca AB
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- Folestad, Staffan (author)
- AstraZeneca AB
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- Viberg, Mats, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- English.
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In: Measurement: Journal of the International Measurement Confederation. - : Elsevier BV. - 0263-2241. ; 106, s. 179-189
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Abstract
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- We present a microwave measurement system that is intended for the estimation of the dispersive dielectric properties for densely packed pellets. In particular, we estimate the Debye parameters for the effective permittivity of a mixture of air and densely packed moist microcrystalline cellulose pellets for the frequency band 2.7–5.1 GHz. The Debye parameters are estimated by means of minimizing the misfit between the measured scattering parameters and the corresponding computed response given a model of the measurement system. This minimization is performed by means of a nonlinear iterative optimization procedure, which is supported by continuum sensitivities, and the optimum is found in 10–60 iterations for the cases presented in this article. We find that increasing moisture content yields an increase in the static permittivity and a decrease in the relaxation time.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Keyword
- Sensitivities
- Gradient-based optimization
- Dispersive media
- Microcrystalline cellulose
- Microwave measurement
- Permittivity
- Finite element method
Publication and Content Type
- art (subject category)
- ref (subject category)
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Cerullo, Livia, ...
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WINGES, JOHAN, 1 ...
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Rylander, Thomas ...
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McKelvey, Tomas, ...
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Gradinarsky, Lub ...
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Folestad, Staffa ...
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Viberg, Mats, 19 ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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and Control Engineer ...
- Articles in the publication
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Measurement: Jou ...
- By the university
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Chalmers University of Technology