Detectors 118
Detectors 118 : Particle Detectors: (4.8) Envelope Detector: (5) Demodulation of Signals: An envelope detector can be used to demodulate a previously modulated signal by removing all high frequency components of the signal. The capacitor and resistor form a low-pass filter to filter out the carrier frequency. Such a device is often used to demodulate AM radio signals because the envelope of the modulated signal is equivalent to the baseband signal
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