Split Ring Resonator for Complex Permittivity Measurement |
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| Erika Pittella, Emanuele Piuzzi |
- Abstract:
- A microwave planar sensor based on a split ring resonator is proposed in order to measure the complex dielectric permittivity of material samples. The geometry of the sensor has been simulated and optimized by a commercial electromagnetic software. Simulations in the presence of the dielectric material sample show that the resonance frequency and quality factor are influenced by the material in contact with the sensor itself. A linear relation is obtained between sample loss tangent and the reciprocal of SRR quality factor. Measurements using high-purity grades liquids have been conducted through a vector network analyzer. A relationship between the resonance frequency and the sample permittivity has been found that is well approximated through a 2-parameter exponential. Finally, the model has been validated measuring the dielectric constant of a liquid by the Keysight High temperature probe kit.
- Download:
- IMEKO-TC4-2020-17.pdf
- DOI:
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