Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Bohleber, Pascal [VerfasserIn]  |
| Wagner, Norman [VerfasserIn]  |
| Eisen, Olaf [VerfasserIn]  |
Titel: | Permittivity of ice at radio frequencies |
Titelzusatz: | Part I. Coaxial transmission line cell |
Verf.angabe: | P. Bohleber, N. Wagner, O. Eisen |
Umfang: | 12 S. |
Fussnoten: | Gesehen am 05.10.2018 |
Titel Quelle: | Enthalten in: Cold regions science and technology |
Jahr Quelle: | 2012 |
Band/Heft Quelle: | 82(2012), S. 56-67 |
Abstract: | At radio-frequencies, measurements of the permittivity of ice are sparse and with unknown or large uncertainty. Coaxial transmission lines have been established for frequency-dependent permittivity determination for a broad variety of materials. Here we present a coaxial transmission line setup originally designed for soil samples, now adapted for measuring ice samples between 10MHz and 1.5GHz. Measured scattering parameters are assessed for artifacts against a forward calculation based on transmission line theory. A Debye-type relaxation function for the complex permittivity is assumed to obtain the permittivity of ice from the measured full set of four scattering parameters by means of a genetic optimization algorithm. The algorithm is successfully validated against quasi-analytical and iterative computation techniques with reference measurements of a low-loss Teflon standard. Based on the forward calculation and the Teflon standard, the total uncertainty for measuring the real part of the permittivity is estimated to be around 1%. Additional measurements of reference materials air, water, ethanol and methanol are used for validation. The real part of the permittivity of eight artificial pure ice samples is found frequency-independent between 10MHz and 1.5GHz at −20°C, with a mean value of 3.18±0.01. |
DOI: | doi:10.1016/j.coldregions.2012.05.011 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Verlag: http://dx.doi.org/10.1016/j.coldregions.2012.05.011 |
| Verlag: http://www.sciencedirect.com/science/article/pii/S0165232X12001127 |
| DOI: https://doi.org/10.1016/j.coldregions.2012.05.011 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1581579977 |
Verknüpfungen: | → Zeitschrift |
Permittivity of ice at radio frequencies / Bohleber, Pascal [VerfasserIn] (Online-Ressource)
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