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Microwave measureme...
Microwave measurement system for dispersive dielectric properties of densely packed pellets
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- Cerullo, Livia, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- WINGES, JOHAN, 1987 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rylander, Thomas, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- McKelvey, Tomas, 1966 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gradinarsky, Lubomir, 1970 (författare)
- AstraZeneca AB
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- Folestad, Staffan (författare)
- AstraZeneca AB
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- Viberg, Mats, 1961 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa färre...
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(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- Engelska.
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Ingår i: Measurement: Journal of the International Measurement Confederation. - : Elsevier BV. - 0263-2241. ; 106, s. 179-189
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Nyckelord
- Sensitivities
- Gradient-based optimization
- Dispersive media
- Microcrystalline cellulose
- Microwave measurement
- Permittivity
- Finite element method
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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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visa fler...
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Viberg, Mats, 19 ...
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visa färre...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Reglerteknik
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Measurement: Jou ...
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Chalmers tekniska högskola