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Surface acoustic waves and SAW materials
Proceedings of the IEEE, 1976Material parameters necessary for optimum design of surface-acoustic-wave (SAW) devices are reviewed. Velocity, coupling coefficient, power flow angle, temperature coefficients, propagation loss (including air loading, diffraction, and beam steering), and equivalent circuit parameters are considered.
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Surface-acoustic-wave (SAW) flow sensor
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1991The use of a surface-acoustic-wave (SAW) device to measure the rate of gas flow is described. A SAW oscillator heated to a suitable temperature above ambient is placed in the path of a flowing gas. Convective cooling caused by the gas flow results in a change in the oscillator frequency.
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Surface Acoustic Wave (SAW) Filters
2007Lumped components such as resistors, capacitors, and inductors make up most of the glue that allows microwave discrete transistors and integrated circuits to work. Lumped components provide impedance matching, attenuation, filtering, DC bypassing, and DC blocking. More advanced lumped components such as chokes, baluns, directional couplers, resonators,
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New Materials for Surface Acoustic Wave (SAW) Devices
Optical Engineering, 1977Advances in state-of-the-art of surface acoustic wave (SAW) device technology will require better substrate materials than those currently available. Calculations of the surface acoustic wave properties of several materials including the quartz derivatives berlinite (A1PO4 ) and 0-eucryptite (0-Li Al SiO4), certain sulfosalts, and a composite structure,
Robert M. O'Connell, Paul H. Carr
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Precision Surface Acoustic Wave (SAW) Oscillators
1982 Ultrasonics Symposium, 1982SAW delay lines and resonators are now used in a number of oscillator applications where high frequency and/or low noise are important considerations. All present applications, however, have a large frequency window which permits very loose tolerances on frequency settability and long term stability.
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Three wave surface acoustical wave (saw) signal processor
The Journal of the Acoustical Society of America, 1986A surface acoustic wave processor capable of performing convolution, correlation, time expansion/compression, and time reversal utilizes the nonlinear interaction between two input surface waves to generate a third surface wave. Phase matching for the third surface wave to perform an integration function is provided by a fan multistrip coupler (FMSC ...
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SURFACE ACOUSTIC WAVE (SAW) PROPAGATION IN NANOSTRUCTURED DEVICES
2019ZnO/SiO2/Si surface acoustic wave Love mode sensors are considered to be promising high sensitivity sensors. Previous research has tested ZnO/SiO2/Si SAW sensors with selected operating frequency and guiding layer thickness. This investigation is based on experimental data of previous research and used the theories and equations from that research to ...
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