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Case 1 which corresponds to the array of 32 piezoelectric transducers with 10 transducers being excited by (a) 1-D voltage signals with 10 rectangular signals. (b) Image of the input voltages at the input plane having 10 stripes represented by blue and white pixels. (c) Validation of the WFC system simulated by the full-wave FEM method, compared with digital FFT and Fresnel diffraction results using 16-phase Fresnel lens.
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The recent emerging alternative to classic numerical Fast Fourier transform (FFT) computation, based on GHz ultrasonic waves generated from and detected by piezoelectric transducers for wavefront computing (WFC), is more efficient and energy-saving. In this paper, we present comprehensive studies on the modeling and simulation methods for ultrasoni...
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