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Recent content by soul_ls

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    Anyone knowing how to get the input impedance of a device under large AC signal

    Hi, Frank, Yes. You are right. The experiments use AC signal. The conductance that I use is the equivalent conductance of water at that frequency, i.e., Z(w)_water. If I know the impedance for the device Z(w)_device, I can calculate the voltage drop on within the water layer so as to get...
  2. S

    Anyone knowing how to get the input impedance of a device under large AC signal

    Hi, Frank, Thanks for your reply. I am not able to measure the device at this stage ... I only do the simulations and try to get a model to characterize its characteristics. I don't understand what you mean by saying " increase the voltage between them and measure the increasing amplitude of...
  3. S

    Anyone knowing how to get the input impedance of a device under large AC signal

    I simplify the device configuration in the following plots. =====ITO electrode=== ----------------------- water ----------------------- Nonlinear device ----------------------- =====ITO electrode=== My goal is to get the electrical field distribution within the water. I want to use the...
  4. S

    Anyone knowing how to get the input impedance of a device under large AC signal

    The voltage is large AC signal, not small AC. I never deal with this kind of biasing... I am doing some simulations to extract the impedance of the device. I heard about some ways to measure it, like load pull, S parameter. But I can't not do measurement now... The device is quit nonlinear...
  5. S

    what is diff between device simulator silvaco and hfss?

    Is there anyway to connect them together...? Now I built a new device but I also want to know how electric field distribution near the device. Is that possible ?

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