SFFM: Frequency Modulation time dependent value

Syntax

SFFM args
SFFM offset amplitude carrier modindex signal

Purpose

The component value is a sinusoid, frequency modulated by another sinusoid.

Comments

For voltage and current sources, this is the same as the Spice SFFM function, with some extensions.

The shape of the waveform is described by the following equations:

mod = (_modindex * sin(2*PI*_signal*time));
ev = _offset + _amplitude 
        * sin(2*PI*_carrier*time + mod);

Parameters

Offset = x

Output offset. (Default = 0.)

Amplitude = x

Amplitude. (Default = 1.)

Carrier = x

Carrier frequency, Hz. (required)

Modindex = x

Modulation index. (required)

Signal = x

Signal frequency. (required)