I am working on the design and development of PVDF-based Surface Acoustic Wave Devices. Is there any standard procedure to design SAW IDT parameters like aperture, width of electrode, delay line length?
Hey Nikhil Dilip Kulkarni This paper we wrote discusses it a bit
Conference Paper Design and Fabrication of Efficient Piezo-MEMS Voltage Transformers
If you have access to COMSOL you can do some parametric simulations and find the optimized parameters for your desired output.
-Adam
Hey Nikhil Dilip Kulkarni , there is a standard mathematical model for modeling SAW devices, known as Coupling of Modes (COM). In this model, matrices are created for a single electrode in an IDT and then eventually computed for an IDT ( a series of electrodes). Then, a separate matrix calculation for input IDT is performed. Then all the matrices are appropriately cascaded to design a complete SAW device. Using the resultant matrix, one can analyze the performance using S11, S21, and other scattering parameters. One can also use MATLAB to do so. Or, just as Adam Weidling mentioned, COMSOL is also another alternative to perform the simulations.
Also, there are standard equations for calculating electrode width, IDT aperture, number of electrodes, electrode thickness (fixed value), delay line, and other parameters. For further clarification, we have published a few papers on SAW based RFID tags which you can go through.
Article Simultaneous Detection of Multiple Surface Acoustic Wave Sen...
Conference Paper A Read Range Maximization Approach for UWB Surface Acoustic ...
Maybe this paper and corresponding references can helps you, pages 37 and 38. Take a look at SAW Delay line Summary Report page 38
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