pwlr()
Piecewise-linear repeated function
Syntax
pwl(time, Ncycles, T1, V1, T2, V2, ..., Tn, Vn)
Arguments
| Name | Description | Range | Type | Required |
|---|---|---|---|---|
| time | program time variable | (0, ∞) | real | yes |
| Ncycles | number of cycles that waveform is to be repeated | [1, ∞) | integer | yes |
| T1, T2, ..., Tn † | time points | (0, ∞) | real | yes |
| V1, V2, ..., Vn † | value at time points t1, t2, ..., tn | (-∞, ∞) | real | yes |
| † a minimum of one time-value pair should be specified | ||||
Examples
This example assumes that a transient simulation is performed using:
StartTime = 0, StopTime = 200ns, MaxTimeStep = 50ps
This expression creates a time-periodic piecewise linear pulse repeating every 30ns:
value = pwlr(time, 5, 0ns, 0V, 5ns, 1V, 10ns, 2V, 20ns, 0V, 30ns, 1.5V)
See Also
cos_pulse(), damped_sin(), erf_pulse(), exp_pulse(), pulse(), pwl(), ramp(), step()
Notes/Equations
This expression creates a time-periodic piecewise linear pulse train, which is repeated for specified number of cycles. It can be used to create a current or voltage pwl pulse using the ItUserDef or VtUserDef time domain sources. Alternately, the built-in time domain current or voltage source component, ItPwl or VtPwl can be used.
The piecewise linear values versus time points are specified as (Ti, Vi) pairs. A minimum of one time-value pair should be specified. Each pair specifies a value for a time=Ti. The intermediate values at time points that are not specified are interpolated.
The output is calculated as follows:
The pwlr() Function
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