Howtosignalprocessing
- What is amplitude modulation and demodulation?
- What are the AM demodulation techniques?
- What is AM modulator and demodulator?
- What demodulator is used for AM?
What is amplitude modulation and demodulation?
Modulation is the process of influencing data information on the carrier, while demodulation is the recovery of original information at the distant end of the carrier. A modem is an equipment that performs both modulation and demodulation.
What are the AM demodulation techniques?
An AM radio signal can be demodulated by rectifying it to remove one side of the carrier, and then filtering to remove the radio-frequency component, leaving only the modulating audio component. This is equivalent to peak detection with a suitably long time constant.
What is AM modulator and demodulator?
– In modulation, the original message signal is mixed with a carrier wave whose parameters are required to be changed. In demodulation, the combination of carrier and message signal are separated from each other, to have an original information signal.
What demodulator is used for AM?
Square law demodulator is used to demodulate low level AM wave. Following is the block diagram of thesquare law demodulator. This demodulator contains a square law device and low pass filter. The AM wave V1(t) is applied as an input to this demodulator.
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