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AM Modulator - PowerPoint PPT Presentation


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AM Modulator. Types of AM modulator. There are low-level and high-level modulators . Low-level modulators generate AM with small signals and must be amplified before transmission. High-level modulators produce AM at high power levels, usually in the final amplifier stage of a transmitter.

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types of am modulator
Types of AM modulator
  • There are low-level and high-level modulators.
  • Low-level modulators generate AM with small signals and must be amplified before transmission.
  • High-level modulators produce AM at high power levels, usually in the final amplifier stage of a transmitter.
slide6

Collector Bias

Carrier Wave

Output at collector

(without tank circuit)

AM waveform due to flywheel

balanced modulator
Balanced Modulator
  • A balanced modulator is a circuit that generates a DSB signal, suppressing the carrier and leaving only the sum and difference frequencies at the output.