Demodulation
Demodulation - Demodulation is the process of recovering the signal intelligence from a modulated carrier wave. This process, also called detection, is the reverse process of modulation..
Demodulation
Demodulation is the process of recovering the signal intelligence from a modulated carrier wave. This process, also called detection, is the reverse process of modulation..
Frequency Modulation
In frequency modulation, the frequency of the carrier wave is modified in accordance with the amplitude of the modulating wav..
Frequency Modulation
In frequency modulation, the frequency of the carrier wave is modified in accordance with the amplitude of the modulating wave. The amplitude of the carrier remains unchanged at all times. In other words, the amplitude of the modulated wave remains ..
In frequency modulation, the frequency of the carrier wave is modified in accordance with the amplitude of the modulating wave. The amplitude of the carrier remains unchanged at all times. In other words, the amplitude of the modulated wave remains ..Amplitude Modulation
Amplitude Modulation - When the amplitude of high frequency carrier wave is changed in accordance with the intensity of the signal, it is called amplitude modulation. In amplitude modulation, only the amplitude of the carrier wave is changed in accordance wit..
Amplitude Modulation - When the amplitude of high frequency carrier wave is changed in accordance with the intensity of the signal, it is called amplitude modulation. In amplitude modulation, only the amplitude of the carrier wave is changed in accordance wit..Types of Demodulation
Corresponding to different types of modulation processes, there are different types of demodulation..
Need for Frequency Modulation
(i) Various electrical machines and noises cause amplitude disturbance in the transmission of amplitude-modulated wave. This makes the reception noisy. So, there is a need for different type of modulation, which can reduce the noise factor. Frequency modulation..
Importance of rectification in demodulation
The modulation enveloped on the positive and negative sides are 180 o out of phase. If rectification is not done, then after filtering, the positive and negative envelopes would cancel each other. So, the original modulating signal cannot be recovered. Thus, rectification is n..
Pulse Modulation
Pulse Modulation - In amplitude modulation and frequency modulation, the modulation was done by sinusoidal signals. In pulse modulation, short pulses may do the modulation of a radio-frequency carrier. The simplest of t..
Amplitude Modulation
When the amplitude of high frequency carrier wave is changed in accordance with the intensity of the signal, it is called amplitude modulation..
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