Wei-biao Wang

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In this paper, a 3D finite element method (FEM) is performed to accurately investigate the propagation characteristics of PBAW in SiO<sub>2</sub>/metal grating/rotated YX-LiNbO<sub>3</sub> substrate structure by the commercial software of COMSOL Multiphysics. The simulated results show a SH-type PBAW with large K<sup>2</sup> in SiO<sub>2</sub>/Cu(More)
The surface acoustic wave (SAW) pressure sensor is usually composed of a clamped circular quartz membrane, where a one-port Rayleigh wave mode resonator is fabricated. In order to improve the reliability and the accuracy of the wireless pressure sensor, a wireless pressure sensor based on surface transverse wave (STW) is studied. Combined with the(More)
In this paper, a 3D Finite Element model (FEM) of a surface acoustic wave (SAW) resonator consists of a piezoelectric thin film ScAlN /diamond layered structure with buried interdigital electrodes (IDT) was performed and analyzed using commercial software COMSOL Multiphysics, FEM software. We have done investigation on SAW propagation characteristics on the(More)
Collimation system provides collimated light for the static Fourier-transform spectroscopy (SFTS). Its quality is crucial to the signal to noise ratio (SNR) of SFTS. In the present paper, the physical model of SFTS was established based on the Fresnel diffraction theory by means of numerical software. The influence of collimation system on the SFTS was(More)
This paper describes a novel approach to extract dispersive coupling-of-modes (COM) parameters for simulating low-loss surface acoustic wave (SAW) devices. A finite periodic grating is in consideration. Using finite FEM/BEM tool, the field (mechanical displacements and electric potential) distributions could be calculated at every frequency. Then the field(More)
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