CST MICROWAVE STUDIO® - Frequency Domain Solver
The Frequency Domain Solver of CST MICROWAVE STUDIO® (CST MWS) is, like the Transient Solver, a general purpose tool. It delivers electromagnetic near and
farfields as well as S-Parameters. Although the line cannot be drawn easily and there are always exceptions, the Freqeuncy Domain Solver is the better choice,
if you are looking at electrically small structures, or devices with a high Q-value.
As an unique feature, CST MWS' Frequency Domain solver can be switched from Cartesian to tetrahedral meshing. Besides segmented representation of
curved surfaces, a true surface mesh as shown below increases accuracy and speed.
Mesh refinement of traditional tetrahedral frequency domain solvers does not improve upon the initial facetted representation
of the structure. CST’s true geometry adaptation projects the refined mesh back onto the original model to achieve higher accuracy.
CST MWS allows the user to alternatively use the Time Domain or the Frequency Domain solver on the same simulation model.
Broadband results are provided quickly with the built-in adaptive frequency sweep. For both mesh types automatic mesh adaptation schemes are implemented.
CST MWS' Frequency Domain Solver offers a direct and an indirect linear equation system solver. The direct one is preferable if the number of tetrahedrons is
not too large; it shows its main strength when the full S-matrix of a structure with multiple excitations is required.
A key application for the Freqeuncy Domain Solver are periodic structures, suche as
PBGs,
FSSs, or
phased arrays. CST MWS features a special periodic boundary implementation, which automatically creates
the boundaries for arbitrarily shaped unit cells. The ports are equipped with Floquet-mode solvers for highly accurate and fast simulation, and the easy analysis
of polarization and mode type.
A circulator simulated with the CST MWS Frequency Domain Solver.
The CST MWS Frequency Domain Solver can be used for frequency dependent, anisotropic media. For circulator ferrites the biasing can be calculated in
CST
EM STUDIO®'s magnetostatic solver. The port orientation is arbitrary.
CST MWS Frequency Domain Solver application examples