Surface Acoustic Wave Sensor Molding Simulation

There has been a tremendous increase in demand for high quality components over the past decades with a expeditious growth in the telecommunications and transducers industry. As the usage of surface acoustic wave (SWA) devices in wireless communication and techno-sensor aspects, more demands were advanced for SAW devices:higher operating frequencies, wider bandwidth, less sizes, lower insertion losses so much as wireless transfers and wireless-passive sensor. Accordingly, there are crucial significance of modeling and simulation for more complication SAW devices.SWA devices simulation not only save on the cost of development acoustic devices, curtail development periods, also make much more for the exploitation of SAW sensor, because of the research of simulation and modeling being in the base of theory method.The basic of thesis is the research item of SAW dynamic test. Firstly, we had researched the electrics-resonance-characteristic of SAW resonance such as inserting loss, scattering coefficients, gate die, resonance admittances characteristic with SAW simulate models(delta function model, equivalent circuit model, P-matrix model and couple-of-modes model ) and ANSYS piezoelectricity coupling analyses method in the base of research of piezoelectricity theoretics and SAW theoretics. Then, we had made the SAW temperature sensor. Lastly, we had tested electrics resonance characteristic and temperature response characteristic of the SAW temperature sensor and received good result.