LTspice - 3 ways how to get an AM - amplitude modulated signal.
Let's have a sinus carrier of 1000 kHz from medium waves range and a modulating 1 kHz sinus wave.
We can modify frequency of carrier, modulation frequency and modulation depth.
1. AM signal as an addition of carrier and 2 side waves:
Using 3 sinus voltage sources parallel or in series:
2. AM signal as a multiplication of carrier and modulating wave:
Using 2 sinus voltage sources and one behavioural voltage source.
3. AM signal using A-device MODULATE from Special functions library:
Using A-device MODULATE as an amplitude modulating device.