Adding a Port

Ports represent the external nodes and specify an external access point in the circuit. When an SIwave design is exported or cosimulated, ports define the externally visible nodes.

A new naming convention uses keywords, such as $PARTNAME and $REFDES, to define ports.

To add a port:

  1. Click Home. From the Circuit Elements box, click the Add Port icon (Add Port icon).
  2. Click the location where you want to place the port.
  3. Drag the mouse to an appropriate length and direction.
  4. Click to finish drawing.

    5. The Select layers for port terminals window appears.

Select Layers for Port Terminals window

  1. From the Positive Terminal Resides on Layer list, select the layer for the positive end.
  2. From the Negative Terminal Resides on Layer list, select the layer for the negative end.
  3. Click OK.

    4. The Port Properties window appears.

Port Properties window

  1. From the Name field, type a name for the port.
  2. From the Reference Impedance field, type a value in Ohms. This value is used as the normalization when calculating s-parameters.
  1. Click OK.

You have now added a port. You can also edit its parameters.