Dielectric Spectroscopy of High Permittivity Thin Solids Using Open-Ended Coaxial Probes
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Date
2022
Publication Type
Conference Paper
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yes
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Abstract
Open-ended coaxial probe (OCP), as a widely used conventional technique for dielectric spectroscopy in the microwave and millimeter-wave regime, suffers from two difficulties when applied to high-permittivity solids. They include high sensitivity to minute gaps between the probe and sample, and reflections from probe boundary when layered samples are measured. In this contribution, we present first a calibration algorithm that aims at measuring the effective air-gap between the probe and sample. The result of this algorithm is later used in the OCP measurement process to cover the effect of this airgap. Second, we introduce using a lossy platform below the thin sample to mitigate the inaccuracies caused by probe truncation. An exemplary high-permittivity thin sample is outlined and measured using both conventional and new algorithm, which demonstrates a considerable reduction in measurement error when the proposed procedure is followed.
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published
Editor
Book title
2022 16th European Conference on Antennas and Propagation (EuCAP)
Journal / series
Volume
Pages / Article No.
1 - 4
Publisher
IEEE
Event
16th European Conference on Antennas and Propagation (EuCAP 2022)
Edition / version
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Date collected
Date created
Subject
dielectric spectroscopy; electromagnetic simulation; noninvasive measurement
Organisational unit
03944 - Novotny, Lukas / Novotny, Lukas
Notes
Conference lecture held on March 31, 2022