Frequency modulation
What Frequency modulation means in Physics A-Level, as defined for AQA.
Definitions of Frequency modulation
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Reference: AQA
The carrier's amplitude stays constant while its frequency shifts above and below the unmodulated carrier value at the modulating rate, so the trace looks compressed and stretched.
A technique in which the carrier amplitude stays constant and its frequency shifts slightly above and below the centre value as the signal varies.
Topics that use Frequency modulation
Related terms
- Amplitude modulation
- Amplitude modulation (AM)
- Bandwidth
- Carrier wave
- Frequency and period relationship
- Information signal
- Waveform interpretation and graphical representation
- Carrier waves and information transfer
Using Frequency modulation in the exam
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