CST – Computer Simulation Technology

Title:
Microwave resonances in dielectric samples probed in Corbino geometry: Simulation and experiment
Author(s):
M. Maximilian Felger, Martin Dressel, Marc Scheffler
Source:
AIP - REVIEW OF SCIENTIFIC INSTRUMENTS
Vol./Issue/Date:
Volume: 84, Issue: 11, 1 November 2013
Year:
2014
Page(s):
114703 - 114703-5
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.
Document:

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