Surface Acoustic Wave Resonator Echo Signal Frequency Estimation

Boquan LIU; Jiajia GUO; Zhiming LUO

doi:10.11999/JEIT180875

Volume 41 Issue 9

Sep. 2019

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Boquan LIU, Jiajia GUO, Zhiming LUO. Surface Acoustic Wave Resonator Echo Signal Frequency Estimation[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2087-2094. doi: 10.11999/JEIT180875

Citation:

Boquan LIU, Jiajia GUO, Zhiming LUO. Surface Acoustic Wave Resonator Echo Signal Frequency Estimation[J]. Journal of Electronics & Information Technology, 2019, 41(9): 2087-2094. doi: 10.11999/JEIT180875

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Surface Acoustic Wave Resonator Echo Signal Frequency Estimation

doi: 10.11999/JEIT180875

Institute of Physical and Optoelectronic Engineering, Xiangtan University, Xiangtan 411100, China

Funds: The National Natural Science Foundation of China (61601395)

Received Date: 2018-09-07
Rev Recd Date: 2019-02-18

Available Online: 2019-03-13

Publish Date: 2019-09-10

Abstract

Abstract

Surface Acoustic Wave (SAW) resonator measuring technology can be used in high temperature and high pressure, strong electromagnetic radiation and strong electromagnetic interference to realize wireless passive parameter detection. Based on the the non-stationary characteristics of the SAW signal, a kind of echo signal frequency estimation method, Digital Frequency Significant Place Tracking (DFSPT) method is put forward. Compared with the existing methods based on Fast Fourier Transform (FFT) and Singular Value Decomposition (SVD), the simulation results show that the method can determine the number of significant digits of digital frequency according to the difference of signal-to-noise ratio. Thus, it can increases stability and accuracy. The experiment of wireless SAW temperature sensor shows that the frequency estimation standard deviation of this method is small and the robustness is high.
- Surface Acoustic Wave (SAW),
- Echo signal,
- Digital frequency,
- Significant digits,
- Frequency estimation

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References(21)

References

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