tidy3d.LumpedResistor

class LumpedResistor

Bases: RectangularLumpedElement

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

Parameters:

• attrs (dict = {}) – Dictionary storing arbitrary metadata for a Tidy3D object. This dictionary can be freely used by the user for storing data without affecting the operation of Tidy3D as it is not used internally. Note that, unlike regular Tidy3D fields, attrs are mutable. For example, the following is allowed for setting an attr obj.attrs['foo'] = bar. Also note that Tidy3D` will raise a TypeError if attrs contain objects that can not be serialized. One can check if attrs are serializable by calling obj.json().

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

• size (Union[tuple[Union[pydantic.v1.types.NonNegativeFloat, autograd.tracer.Box], Union[pydantic.v1.types.NonNegativeFloat, autograd.tracer.Box], Union[pydantic.v1.types.NonNegativeFloat, autograd.tracer.Box]], Box]) – [units = um]. Size in x, y, and z directions.

• name (ConstrainedStrValue) – 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.

• voltage_axis (Literal[0, 1, 2]) – Specifies the axis along which the component is oriented and along which the associated voltage drop will occur. Must be in the plane of the element.

• snap_perimeter_to_grid (bool = True) – When enabled, the perimeter of the lumped element is snapped to the simulation grid, which improves accuracy when the number of grid cells is low within the element. Sides of the element perpendicular to the voltage_axis are snapped to grid boundaries, while the sides parallel to the voltage_axis are snapped to grid centers. Lumped elements are always snapped to the nearest grid boundary along their normal_axis, regardless of this option.

• resistance (PositiveFloat) – Resistance value in ohms.

Attributes

attrs

Methods

to_structure([grid])

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

Inherited Common Usage

resistance

to_structure(grid=None)

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

__hash__()

Hash method.