Skip to content
Flex RF Flex RF Flex RF

flex_rf.tidy3d.ImpedanceCalculator

Type: class │ Base(s): MicrowaveBaseModel

Description

Section titled “Description”

Tool for computing the characteristic impedance of a transmission line.

Example(s)

Section titled “Example(s)”

Create a calculator with both voltage and current path integrals defined.

v_int = AxisAlignedVoltageIntegral(
    center=(0, 0, 0),
    size=(0, 0, 2),
    sign="+",
    extrapolate_to_endpoints=True,
    snap_path_to_grid=True,
)
i_int = AxisAlignedCurrentIntegral(
    center=(0, 0, 0),
    size=(1, 1, 0),
    sign="+",
    extrapolate_to_endpoints=True,
    snap_contour_to_grid=True,
)
calc = ImpedanceCalculator(voltage_integral=v_int, current_integral=i_int)

You can also define only one of the integrals. At least one is required.

_ = ImpedanceCalculator(voltage_integral=v_int)

Parameters

Section titled “Parameters”
voltage_integral [VoltageIntegralType | None] = None

Definition of path integral for computing voltage.
current_integral [CurrentIntegralType | None] = None

Definition of contour integral for computing current.

Methods

Section titled “Methods”
check_voltage_or_current()

Raise validation error if both voltage_integral and current_integral are not provided.
compute_impedance(em_field: IntegrableMonitorDataType, return_voltage_and_current: bool = False)

Compute impedance for the supplied em_field using voltage_integral and current_integral. If only a single integral has been defined, impedance is computed using the total flux in em_field.
compute_voltage_current(em_field: IntegrableMonitorDataType)

Compute voltage and current for the supplied em_field using voltage_integral and current_integral. None is returned for the integral that is not defined.

Machine-Readable Export

Section titled “Machine-Readable Export”