Glossary Definition for PFM

Glossary Term: PFM 

Definition

Pulse-Frequency Modulation: A pulse modulation technique in which the frequency is varied with the input signal amplitude. The duty cycle of the modulated signal does not change. Because it is always a square wave with changing frequency, PFM is also referred to as square-wave FM.
Synonyms
  • Pulse-Frequency Modulation

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