How to calculate the IDT terminal receiving power with a solid mechanics Port input?

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Hi I try to excite a Lamb mode on the piezoelectric solid material using numeric mechanics Port (1 W) and convert this mechanical wave to electric signal through IDT structure.

The numeric mechanics Port works well, and the lamb mode is normally generated without the IDT structure. Then, I put IDT on the propagation path of the Lamb wave, setting terminal (charge, 0 C) and ground. But I didn't see any option to calculate the power that can be compared with the input port power (1 W).



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