CST2013: Frequency Domain Solver Overview - Resonant: Fast S-Parameter

The Resonant: Fast S-Parameter solver is of interest if full and broadband scattering parameter matrices are required. The system is transformed into frequency domain and a special model order reduction technique is used to reduce the system size. From the much smaller system matrix, the transfer function and the scattering parameter matrices are calculated.

Please note that the Resonant solver is currently available for loss-free structures, small dielectric lossy structures, waveguide and discrete ports. In addition, electric and magnetic boundaries are supported. With tetrahedral mesh, also open and conducting wall boundaries are available, as well as lossy metal.

Please also note that field monitors can be defined for the Resonant: Fast S-Parameter method only with the tetrahedral mesh selected. If field monitors are required for hexahedral grids, please use the Resonant: S-Parameter, fields or the General Purpose solver. The Resonant: S-Parameter, fields method is not required for the tetrahedral mesh since, as mentioned above, the Resonant: Fast S-Parameter method calculates field monitors as well.

Areas of application

• Scattering parameter matrices (S-Parameter)

• Structure design by using the optimizer or the parameter sweep

• Spice network extraction

How to start the solver

Before you start the solver, you should make all necessary settings. See the Frequency Domain Solver Settings - Resonant: Fast S-Parameter for details. The Resonant solver can be started by selecting Home: Simulation Start Simulation .

Solver logfile

After the solver has finished, you may view the logfile by selecting Post Processing: Manage Results Logfile Solver Logfile. The logfile contains information about solver settings, mesh summary, solver results and solver statistics.