Layer-Based Grid Refinement

Layer-based grid refinement targets thin, planar structures such as PCB traces, ground planes, and laminate layers. Use LayerRefinementSpec to refine the grid near metallic corners and edges inside a specified layer.

from flex_rf.tidy3d import GridRefinement, GridSpec, LayerRefinementSpec

layer_refinement = LayerRefinementSpec(
    axis=2,
    center=(0, 0, 0),
    size=(3, 2, 0.1),
    min_steps_along_axis=2,
    corner_refinement=GridRefinement(dl=100, num_cells=2),
)

grid_spec = GridSpec(
    # Other grid settings.
    layer_refinement_specs=[layer_refinement],
)

More than one LayerRefinementSpec can be used. Use separate specs for structures on different physical layers.

Convenience Constructors

LayerRefinementSpec can be constructed from explicit layer bounds or from existing structures. The structure-based constructor is useful when the layer position, size, and normal axis should be inferred from geometry.

from flex_rf.tidy3d import LayerRefinementSpec

trace_refinement = LayerRefinementSpec.from_structures(
    structures=[my_planar_structure],
    min_steps_along_axis=2,
)

Related API Symbols

Symbol	Purpose
LayerRefinementSpec	Defines a layer where grid snapping and refinement are applied.
CornerFinderSpec	Configures corner detection on a 2D plane.
GridRefinement	Defines local refinement step size and cell count.
GridSpec	Collects grid settings for a simulation.

Related Pages

Page	Why open it
RF Material Models	Configure metals and dielectrics used in refined layers.
Lumped Ports and Elements	Add lumped ports and elements to planar RF layouts.