In this paper, we propose to implement a time synchronous dyadic wavelet processor array with surface acoustic wave devices. An arbitrary dyadic wavelet scale processor consists of a wavelet interdigital transducer (IDT) apodized by the envelope of a wavelet function and a uniform IDT. A dyadic wavelet processor array consists of a multiscale wavelet processor using a surface acoustic wave (SAW) device array based on scale dyadic dilation. The delay time difference between different scale processors in the dyadic wavelet processor array is compensated by the delay time characteristic of the SAW propagating on the crystal substrate surface, which ensures that the wavelet transform result output by the dyadic wavelet processor array can correctly characterize the time-frequency properties of the input signal. An experiment implementing a time synchronous wavelet processor array consisting of three scale processors with SAW devices is presented. Experimental results confirm that the experimental frequency response curves are in good agreement with the theoretical frequency response curve over 30 dB, and three wavelet scale processors have the same response time.
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