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Article Dans Une Revue IEEE Transactions on Antennas and Propagation Année : 2021

Contactless Characterization of Metals Thermal Expansion Coefficient by a Free-Space RF Measurement

Résumé

In this paper, a novel method to characterize the thermal dilatation of metals using a contactless measurement of the frequency-dependant reflection coefficient of a resonator is introduced. This wireless technique allows extracting the thermal expansion coefficient of the material without the need of any calibration. Two antennas, a VNA and a scatterer fabricated with the under-test material are required. All the measurements have been achieved using a climatic chamber with absorbers to control the scatterer's temperature. Measured values for thermal expansion coefficients are in good agreement with the values provided by the manufacturer which is confirmed by a sensibility study.
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Dates et versions

hal-02899835 , version 1 (15-07-2020)

Identifiants

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Florian Requena, Nicolas Barbot, Darine Kaddour, Etienne Perret. Contactless Characterization of Metals Thermal Expansion Coefficient by a Free-Space RF Measurement. IEEE Transactions on Antennas and Propagation, 2021, 69 (2), pp.1230 - 1234. ⟨10.1109/TAP.2020.3010982⟩. ⟨hal-02899835⟩

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