Impedance curve doesn't show resonance Answered
I'm simulating a CMUT cell where I excite it using a ricker wavelet to check the resonance frequency.
When I press FFT for the displacement of the center of the membrane, I get the following curve which shows a resonance frequency of nearly 5.7 MHz.
However, when checking the impedance curve (by pressing the impedance option while selecting the charge of the top electrode), I got the following curve which doesn't show any resonance. I expected to see a dip and a peak as evidence of the resonance frequency but I didn't. So, I wonder what's wrong with the impedance curve.
I also tried the review script code explained in the following tutorial's link and I got the same result.