Types of Demodulation
1. Amplitude Modulation: In Amplitude modulation, we used rectifiers to demodulate the signal that is generated from the modulation signal.
2. Frequency Modulation: In Frequency modulation, we know that the frequency modulation of the carrier signal is changed while the phase and amplitude of the signal are not changed after that demodulation technique recovers the original signal that is generated from the modulated wave. In that case, we use Phase-locked loops for demodulation.
3. Phase Modulation: We learned in phase modulation, the frequency is directly proportional to the Phase. When there is a fluctuation in Phase, the frequency also reflects variation after that demodulation technique recovers the original signal that is generated from the modulated wave. In that case, we use a Phase detector for demodulation.
Advantages of Demodulation
- It helps to improve the original signal.
- It improve the Amplitude, frequency and phase modulation signals.
- Demodulation improve the signal reliability.
Disadvantages of Demodulation
- Demodulation have high power consumption.
- It is a complex process.
- The equipment cost is expensive.
Difference Between Modulation and Demodulation
Modulation and demodulation are components of modems that convert analog signals to digital signals and vice versa. The process of converting digital to analog is known as modulation, and the reverse of modulation is known as demodulation. Analogue signals are continuous, whereas digital signals are discrete, or change abruptly. In this article, we will explain modulation and demodulation, as well as the differences between them.
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