Transmisson Line Sections as Sensors for Radiofrequency measurements of nonelectrical quantities

Viktorov, Vladimir; Lunkin, B. V.; Sovlukov, A.S.

doi:10.1080/16070658.1980.11689178

Cited by 2 publications

(4 citation statements)

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“…Now using the mass parameters let us express volumetric parameters, which characterize the content of different components in kernels. Commonly, the moisture content M is defined as the ratio of absorbed water mass m w to the total material mass m [2][3][4][5][6][7]:…”

Section: Dielectric Permittivity Of Separate Kernelsmentioning

confidence: 99%

“…So the change of kernel dielectric permittivity over a wide range of moisture levels and temperature can be described by formulae (3), (8) (or (9)), ( 10), ( 14), ( 15) and ( 16). The coefficients S and F , appearing in (3), can be calculated using (7). Their magnitudes can be considered constant at different moisture levels, because the above described phenomenon of a small change of kernel volume is connected with such a change of kernel dimensions, which can be considered insignificantly small in comparison to the wavelength.…”

Section: Dielectric Permittivity Of Separate Kernelsmentioning

confidence: 99%

“…This value indirectly determines the magnitude of functional (6) through expressions ( 5), ( 8) and (15). Therefore, it can be selected theoretically using the additional procedure of direct numerical minimization of functional (6) together with the procedure of S and F determination by (7).…”

Section: Dielectric Permittivity Of Separate Kernelsmentioning

confidence: 99%

“…To investigate the properties of disperse systems one utilizes non-contact electromagnetic methods using the difference between complex dielectric permittivities of different mixture components [1][2][3][4][5]. Similar methods are extremely efficient in industrial processes, since they allow the performance of non-destructive quality checks of the produced disperse materials continuously without interrupting the production process [1,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Effect of continuous modification of dielectric order in grain

Kukharchik

Titovitsky

Purovsky

2006

J. Phys. D: Appl. Phys.

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The notion of dielectric order of a multi-component disperse system is introduced and is bounded with the index of the power law of mixing for dielectric permittivities of different components in an electromagnetic field. Using the example of wheat grain under microwave radiation, we phenomenologically describe the effect of continuous modification of dielectric order in a disperse system as a result of its moisture alteration. It is supposed that this effect is conditioned by the known phenomenon of organization and expansion of spatially regulated water structure formations inside grain kernels when they absorb moisture. A new mixing law is established, being in good agreement with this effect. On its basis, a physically correct theory has been developed. It permits calculation of the grain dielectric permittivity over a wide range of moisture content and temperature variation.

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