Traditionally, envelope analysis is used to simulate circuits with modulated inputs.
Envelope analysis is much faster than transient simulation, and is used for simulating spectral regrowth.
Regular envelope analysis is "brute force" transistor-level simulation:
Fast envelope analysis technology uses an accelerated mathematical representation to reduce the computational complexity
Simulations that used to take days now take hours or minutes with no loss in accuracy!
There is an easy to use GUI and use-model in MMSIM 10.1:
There are 3 modes available for fast envlp analysis:
Run fast envlp with a fixed step size. Set the step period to the I/Q data sampling rate.
Have fun simulating!