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This tutorial shows how to model an arbitrary surface acoustic wave (SAW) delay line. The design parameters are arbitrary in the sense that the outputs are far from optimal from a practical standpoint. The aim is to show how a SAW device can be set up in the software: how to define the geometry, choose a suitable mesh resolution, define IDTs and exterior open boundaries, what outputs can be extracted, and so on.

The Y- and S-parameters are obtained and validated by comparison with the semi-analytical Delta-Function model. Good agreement is demonstrated.

This tutorial builds on the Surface Acoustic Wave Velocity Calculations from a Unit Cell model, where a large set of useful parameters was obtained, including the wave velocities, the squared effective electromechanical coupling coefficient, and so on.