Howtosignalprocessing
- How AM demodulation is done?
- How does demodulated signal differ from original signal in AM?
- How do you demodulate an over modulated signal?
How AM demodulation is done?
AM is achieved by multiplying carrier and message signals. Demodulation is achieved by sampling the AM signal at carrier frequency. Amplitude modulation (AM) is defined as modifying the amplitude of the carrier wave according to the message or information signal.
How does demodulated signal differ from original signal in AM?
In modulation, the message signal is added on a carrier wave for transmission. In demodulation, the message is separated from the carrier signal. Modulation process is need for mixing of two signal of different parameters together. Demodulation is needed for recovery of original signal from a mix of two signals.
How do you demodulate an over modulated signal?
In order to demodulate a double-modulated signal such as , at least two demodulators are necessary. Using the tandem technique, the in-phase or X-component of demodulated signal at the carrier frequency is internally routed to the second demodulator at sideband frequency.
