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Wavelet versus Fourier for wireless SAW sensors resonance frequency measurement

Abstract : The purpose of this communication is to show that wavelet transform provides a relevant way to the Fourier transform in the case of central frequency measurement of a SAW resonator. After recalling the limits of the Fourier transform, we present a method based on wavelet transform modulus maxima which allows staying in the time domain without using the frequency domain. We show that this approach is a way to improve the spectral resolution and we propose a technique, checked on experimental signals, able to measure the SAW resonator frequency according to the desired spectral resolution.
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Submitted on : Thursday, October 20, 2016 - 10:12:40 AM
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Pascal Rischette, Angel Scipioni, Omar Elmazria, Hamid M'Jahed. Wavelet versus Fourier for wireless SAW sensors resonance frequency measurement. IUS 2013, IEEE International Ultrasonics Symposium, Prague, Jul 2013, Prague, Czech Republic. pp.2159-2162., ⟨10.1109/ULTSYM.2013.0552⟩. ⟨hal-01384510⟩



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