Periodic Condition
The Periodic Condition sets up a periodicity between the selected boundaries.
Boundary Selection
Destination Selection
This section is available for specifying the destination boundaries, if needed, when the Manual Destination Selection option is selected in the context menu for the Periodic Condition node. You can only select destination boundaries from the union of all source and destination boundaries.
Periodicity Settings
Select a Type of periodicityContinuity (the default), Antiperiodicity, Floquet periodicity, or Cyclic symmetry. Select:
Continuity to make the electric field periodic (equal on the source and destination),
Antiperiodicity to make it antiperiodic,
Floquet periodicity (The Electromagnetic Waves, Frequency Domain Interface only) to use a Floquet periodicity (Bloch–Floquet periodicity),
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For Floquet periodicity also enter the source for the k-vector for Floquet periodicity.
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For User defined specify the components of the k-vector for Floquet periodicity kF (SI unit: rad/m).
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For From periodic port the k-vector for Floquet periodicity kF is obtained from the Periodic Port settings.
The phase shift between the fields on the parallel source and destination boundaries is defined as
Cyclic symmetry for azimuthal periodicity in a structure consisting of a number of identical sectors.
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When Sector angle is set to Automatic (the default), the sector angle is automatically computed from the geometry. Set Sector angle to User defined to enter a manual value for the Sector angle θs (SI unit: rad).
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Enter an integer number for the Azimuthal mode number m.
The phase shift between the fields on the source and destination boundaries is defined as
Constraint Settings
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box. For information about the Constraint Settings section, see Constraint Settings in the COMSOL Multiphysics Reference Manual.
Orientation of Source
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box. For information about the Orientation of Source section, see Orientation of Source and Destination in the COMSOL Multiphysics Reference Manual.
Orientation of Destination
This section appears if the setting for Transform to intermediate map in the Orientation of Source section is changed from the default value, Automatic, and Advanced Physics Options is selected in the Show More Options dialog box. For information about the Orientation of Destination section, see Orientation of Source and Destination in the COMSOL Multiphysics Reference Manual.
Mapping Between Source and Destination
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box. For information about the Mapping Between Source and Destination section, see Mapping Between Source and Destination in the COMSOL Multiphysics Reference Manual.
Fresnel Equations: Application Library path RF_Module/Verification_Examples/fresnel_equations
Plasmonic Wire Grating: Application Library path RF_Module/Tutorials/plasmonic_wire_grating