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We can obtain PM from frequency modulator by passing the modulating signal through a
- a)differentiator
- b)integrator
- c)buffer
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
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We can obtain PM from frequency modulator by passing the modulating si...
A PM wave can be generated using a frequency modulator as shown in figure below:
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We can obtain PM from frequency modulator by passing the modulating si...
Frequency Modulator and PM
Frequency modulation (FM) is a method of encoding information on a carrier wave by varying the instantaneous frequency of the wave. Phase modulation (PM) is a type of modulation where the phase of the carrier signal is varied in accordance with the modulating signal.
Obtaining PM from Frequency Modulator
To obtain PM from a frequency modulator, the modulating signal needs to be passed through a differentiator. A differentiator is a circuit that produces an output voltage proportional to the rate of change of the input voltage.
Explanation
When a modulating signal is passed through a differentiator, it produces an output signal that is proportional to the rate of change of the input signal. This means that rapid changes in the modulating signal result in large variations in the output signal.
In the context of frequency modulation, passing the modulating signal through a differentiator results in a signal that varies rapidly in frequency. This rapid variation in frequency corresponds to variations in phase, thus producing phase modulation.
Therefore, by passing the modulating signal through a differentiator in a frequency modulator, we can obtain phase modulation. This process allows for the generation of phase-modulated signals from frequency modulation circuits.
Frequency modulation (FM) is a method of encoding information on a carrier wave by varying the instantaneous frequency of the wave. Phase modulation (PM) is a type of modulation where the phase of the carrier signal is varied in accordance with the modulating signal.
Obtaining PM from Frequency Modulator
To obtain PM from a frequency modulator, the modulating signal needs to be passed through a differentiator. A differentiator is a circuit that produces an output voltage proportional to the rate of change of the input voltage.
Explanation
When a modulating signal is passed through a differentiator, it produces an output signal that is proportional to the rate of change of the input signal. This means that rapid changes in the modulating signal result in large variations in the output signal.
In the context of frequency modulation, passing the modulating signal through a differentiator results in a signal that varies rapidly in frequency. This rapid variation in frequency corresponds to variations in phase, thus producing phase modulation.
Therefore, by passing the modulating signal through a differentiator in a frequency modulator, we can obtain phase modulation. This process allows for the generation of phase-modulated signals from frequency modulation circuits.
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We can obtain PM from frequency modulator by passing the modulating signal through aa)differentiatorb)integratorc)bufferd)none of theseCorrect answer is option 'A'. Can you explain this answer?
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