tidy3d.IsothermalSSACAnalysis

tidy3d.IsothermalSSACAnalysis#

class IsothermalSSACAnalysis[source]#

Bases: IsothermalSteadyChargeDCAnalysis, AbstractSSACAnalysis

Configures Isothermal Small-Signal AC (SSAC) analysis parameters for charge simulation.

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.

  • tolerance_settings (ChargeToleranceSpec = ChargeToleranceSpec()) – Charge tolerance parameters relevant to multiple simulation analysis types.

  • convergence_dv (PositiveFloat = 1.0) – By default, a solution is computed at 0 bias. If a bias different than 0 is requested through a voltage source, the charge solver will start at 0 and increase bias at convergence_dv intervals until the required bias is reached. This is, therefore, a convergence parameter in DC computations.

  • fermi_dirac (bool = False) – Determines whether Fermi-Dirac statistics are used. When False, Boltzmann statistics will be used. This can provide more accurate results in situations where very high doping may lead the pseudo-Fermi energy level to approach either the conduction or valence energy bands.

  • temperature (PositiveFloat = 300) – [units = K]. Lattice temperature. Assumed constant throughout the device. Carriers are assumed to be at thermodynamic equilibrium with the lattice.

Notes

This analysis class provides an interface for SSAC analysis.

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.IsothermalSSACAnalysis(freqs=sweep_freqs)

Attributes

temperature

tolerance_settings

convergence_dv

fermi_dirac

freqs