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Felger MM, Dressel M, Scheffler M. Microwave resonances in dielectric samples probed in Corbino geometry: simulation and experiment. Rev Sci Instrum. 2013;84(11):114703doi: 10.1063/1.4827084.
Felger, M. M., Dressel, M., & Scheffler, M. (2013). Microwave resonances in dielectric samples probed in Corbino geometry: simulation and experiment. The Review of scientific instruments, 84(11), 114703. https://doi.org/10.1063/1.4827084
Felger, M Maximilian, et al. "Microwave resonances in dielectric samples probed in Corbino geometry: simulation and experiment." The Review of scientific instruments vol. 84,11 (2013): 114703. doi: https://doi.org/10.1063/1.4827084
Felger MM, Dressel M, Scheffler M. Microwave resonances in dielectric samples probed in Corbino geometry: simulation and experiment. Rev Sci Instrum. 2013 Nov;84(11):114703. doi: 10.1063/1.4827084. PMID: 24289421.
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Rev Sci Instrum. 2013 Nov;84(11):114703. doi: 10.1063/1.4827084.

Microwave resonances in dielectric samples probed in Corbino geometry: simulation and experiment.

The Review of scientific instruments

M Maximilian Felger, Martin Dressel, Marc Scheffler

Affiliations

  1. 1. Physikalisches Institut, Universität Stuttgart, D-70550 Stuttgart, Germany.

PMID: 24289421 DOI: 10.1063/1.4827084

Abstract

The Corbino approach, where the sample of interest terminates a coaxial cable, is a well-established method for microwave spectroscopy. If the sample is dielectric and if the probe geometry basically forms a conductive cavity, this combination can sustain well-defined microwave resonances that are detrimental for broadband measurements. Here, we present detailed simulations and measurements to investigate the resonance frequencies as a function of sample and probe size and of sample permittivity. This allows a quantitative optimization to increase the frequency of the lowest-lying resonance.

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