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pulse frequency modulation (PFM)

In pulse frequency modulation (PFM), the pulse frequency is modulated and forms the modulated carrier signal.


frequency modulation with a digital signal

frequency modulation with a digital signal

Pulse frequency modulation is used in optical transmitters, among other things, but also in switching power supplies. With this technique, the pulse rate changes depending on the modulation signal. When modulating with a digital signal, the pulse frequency jumps between two pulse frequencies depending on the logic state.

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Englisch: pulse frequency modulation - PFM
Updated at: 06.06.2010
#Words: 106
Translations: DE