About Large-Signal S-Parameter Simulation

The LSSP Simulation controller in the Simulation-LSSP palette (ADS) computes S-parameters for nonlinear circuits such as those that employ power amplifiers and mixers. In the latter case, S-parameters can be computed across frequencies, that is, from the RF input to the IF output. LSSP simulation is based on the harmonic balance simulation and uses harmonic balance techniques.

Refer to the following topics for details on large-signal S-parameter simulation:

• Performing a Large-Signal S-Parameter Simulation shows the minimum setup requirements for a large-signal S-parameter simulation.
• Example of Large-Signal S-Parameter Simulation is a detailed setup for calculating large-signal S-parameters, using a BJT as the example.
  For an example of an LSSP analysis of a mixer circuit, refer to the design LSSP2.dsn, and its associated dataset, LSSP2.dds. It is in the same project folder as the BJT example. This example illustrates how to use a term at the output port, and uses a voltage source at the LO.
• LSSP Simulation Description is a brief explanation of the LSSP simulator and how it compares to the S-parameter simulator.
• LSSP Simulation Parameters provides details about the parameters available in the LSSP Simulation controller in ADS.

Note You must have the LSSP simulator license to run the simulation. You can build the examples described in these topics without the license, but you will not be able to simulate them.