The Physical Model of a touch sensor is in fact its 3D geometrical model, which can be used in simulations to get the Capacitance values of the model, as well as its Equivalent Circuit. 

In the Physical Model you can design the layout of the sensor, place it inside a stackup, assign a pointer to specific positions you want to investigate and test the performance of said sensor.

Once the Netlist of the Equivalent Circuit is obtained, it can be combined with the Controller circuitry in System Model in order to get Counts and analyze Noise effects.

The menu of the Physical Model includes:

  • Layout, which is the 2D top view of the model.
  • StackUp, which is a 2D side view of the model. By combining Layout and Stack-up, SENSE automatically builds the 3D geometrical model of the sensor.
  • Pointers (optional), which may represent touch effects of finger, including gloved touch, or stylus.
  • Analysis, which contains three types of analysis:

          - Capacitance Analysis 

          - Equivalent Circuit Analysis

- Resistance Analysis.

            

           

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