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applying em-waves to piezoelectric resonator terminal
Posted 7 ago 2014, 11:42 GMT-4 Low-Frequency Electromagnetics, MEMS & Nanotechnology, Piezoelectric Devices, RF & Microwave Engineering, MEMS & Piezoelectric Devices, Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.3b 1 Reply
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I want to apply electromagnetic waves to the "terminal" boundry condition of the piezoelectric material. The aim is to try and excite the piezoelectric material with em-waves instead of the terminal voltage. I am using the RF module to generate the waves and the PZ-module to simulate the piezoelectric resonator (which is a simple beam of silicon with PZT-5H on it). I need to couple the RF module to the PZ-module I guess. One way which I am trying to do is that for a certain freq the simulation first solves the electric field then (somehow) applies this electric field to the PZT. But its not making sense and I also dont really know how to do it. I also read somewhere that I could use an electric circuit but how can i use an electric circuit to combine and convert the em-waves being produced by the RF module to the voltage needed to drive the piezoelectric module.
Any ideas are welcome.
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THanks
One way in my mind was to define an integral coupling variable. Perform a line integral of the resulting electric field over the edge of the PZT electrode and find the potential difference there and then provide this as the potential to the Piezoelectric devices module.
But it doesnt seem to be working at all. I can pass the variable but still there is no actuation of the PZT.