Performing a Gain Compression Simulation

Start by creating your design, then add current probes and identify the nodes from which you want to collect data
For a successful analysis:

• Use port-type sources at the inputs, such as the P_1Tone under Sources-Freq Domain.
• Terminate outputs with port-impedance terminations. You can find this type of port under Simulation-S_Param. Verify the impedance value.
• The Num values in the port-impedance terminations are used to specify input and output ports.
• Add the Gain Compression control element to the schematic. Fill in the fields under the Freq and XdB tabs:
  • For Freq, set the fundamental frequency and order
  • For X db, specify the input and output ports, the frequency at each port, power variation for each port, and maximum input power.
• For a faster simulation of large circuits, use the Krylov option. Refer to the topic "Selecting a Solver" in the chapter "Harmonic Balance Basics" in the Harmonic Balance Simulation documentation for instructions on how to use this option.
• You can use previous simulation solutions to speed up the simulation process. For more information, refer to the topic "Reusing Simulation Solutions" in the chapter "Harmonic Balance Basics" in the Harmonic Balance Simulation documentation.

For details about each field, click Help from the dialog box.