tidy3d.components.spice.analysis.ac.AbstractSSACAnalysis

class AbstractSSACAnalysis

Bases: Tidy3dBaseModel, ABC

Abstract base class for Small-Signal AC (SSAC) analysis parameters.

Parameters:

• freqs (ArrayLike[dtype=float, ndim=1]) – [units = Hz]. List of frequencies for small signal AC analysis. At least one SSACVoltageSource must be present in the boundary conditions.

• at_voltages (Optional[ArrayLike[dtype=float, ndim=1]] = None) – [units = V]. DC operating point voltages at which SSAC is run. If None, SSAC runs only at the last configured DC voltage. Pass an explicit array (a subset of the DC sweep) to select specific bias points. This bias-point selection is only supported by the GPU accelerated charge solver; with the CPU charge solver, leave this as None.

Notes

This class provides the common interface for SSAC analysis by adding the freqs field to any DC analysis class.

Small-signal analysis is performed by linearizing the device equations around a DC operating point. The analysis computes the small-signal response at the specified frequencies.

Examples

>>> import tidy3d as td
>>> freq_range = td.FreqRange.from_freq_interval(1e3, 1e6)
>>> sweep_freqs = freq_range.sweep_decade(num_points_per_decade=10)
>>> ssac_spec = td.SSACAnalysis(freqs=sweep_freqs)

Attributes

freqs
at_voltages

Methods

validate_freqs(val)

freqs

at_voltages

classmethod validate_freqs(val)