# BasebandStep

Source time dependence that describes a baseband step function. Unlike frequency-domain sources such as GaussianPulse, the baseband step produces a signal that ramps up from zero to a constant amplitude, which is useful for time-domain steady-state analysis.

# Rise Time

rise_time: The 10%-to-90% rise time in seconds. It is related to the Gaussian standard deviation by rise_time ≈ 2.563 × sigma.

Type: floating-point number

  • Unit: s (default), ps, or fs
  • Constraint: greater than 0
  • Required field

# Amplitude

amplitude: Real-valued maximum amplitude of the time dependence.

Type: floating-point number

  • Unit: unitless
  • Constraint: greater than or equal to 0
  • Default: 1

# Phase

phase: Phase of the baseband time dependence. It is fixed at 0.

  • Default: 0

# Offset

offset: Delay of the step center in units of rise_time.

Type: floating-point number

  • Unit: rise_time
  • Constraint: greater than or equal to 2.5
  • Default: 5