tidy3d.rf.CoaxialLumpedResistor

class CoaxialLumpedResistor

Bases: LumpedElement

Class representing a coaxial lumped resistor. Lumped resistors are appended to the list of structures in the simulation as Medium2D with the appropriate conductivity given their size and geometry.

Parameters:

• name (str) – Unique name for the lumped element.

• num_grid_cells (Optional[PositiveInt] = 1) – Number of mesh grid cells associated with the lumped element along each direction. Used in generating the suggested list of MeshOverrideStructure objects. A value of None will turn off mesh refinement suggestions.

• enable_snapping_points (bool = True) – When enabled, snapping points are automatically generated to snap grids to key geometric features of the lumped element for more accurate modelling.

• resistance (PositiveFloat) – [units = ohm]. Resistance value in ohms.

• center (tuple[float, float, float] = (0.0, 0.0, 0.0)) – [units = um]. Center of object in x, y, and z.

• outer_diameter (PositiveFloat) – [units = um]. Diameter of the outer concentric circle.

• inner_diameter (PositiveFloat) – [units = um]. Diameter of the inner concentric circle.

• normal_axis (Literal[0, 1, 2]) – Specifies the normal axis, which defines the orientation of the circles making up the coaxial lumped element.

Attributes

geometry	Alias for to_geometry that ignores the grid and allows CoaxialLumpedResistor to behave like a Structure.
resistance
center
outer_diameter
inner_diameter
normal_axis
name
num_grid_cells
enable_snapping_points

Methods

to_geometry([grid])	Converts the CoaxialLumpedResistor object to a Geometry.
to_mesh_overrides()	Creates a suggested MeshOverrideStructure list for mesh refinement both on the plane of lumped element, and along normal axis.
to_snapping_points()	Creates a suggested snapping point list to ensure that the element is aligned with a grid boundary in the normal direction.
to_structure([grid, frequency_range])	Converts the CoaxialLumpedResistor object to a Structure ready to be added to the Simulation

resistance

center

outer_diameter

inner_diameter

normal_axis

to_snapping_points()

Creates a suggested snapping point list to ensure that the element is aligned with a grid boundary in the normal direction.

to_mesh_overrides()

Creates a suggested MeshOverrideStructure list for mesh refinement both on the plane of lumped element, and along normal axis. In the normal direction, we’ll make sure there are at least 2 cell layers above and below whose size is half of the in-plane cell size in the override region.

to_structure(grid=None, frequency_range=None)

Converts the CoaxialLumpedResistor object to a Structure ready to be added to the Simulation

to_geometry(grid=None)

Converts the CoaxialLumpedResistor object to a Geometry.

property geometry

Alias for to_geometry that ignores the grid and allows CoaxialLumpedResistor to behave like a Structure.

Returns:

The annulus describing the coaxial lumped resistor.

Return type:

ClipOperation