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Which of the following is the indirect way of FM generation?
- a)Reactance bipolar transistor modulator
- b)Armstrong modulator
- c)Varactor diode modulator
- d)Reactance FM modulator
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Which of the following is the indirect way of FM generation?a)Reactanc...
It generates FM through phase modulation.
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Which of the following is the indirect way of FM generation?a)Reactanc...
Armstrong Modulator
Armstrong modulator is the indirect way of frequency modulation (FM) generation. It involves using a crystal-controlled oscillator to generate a carrier signal, which is then modulated by the input signal to produce the FM signal.
Key Points:
- The Armstrong modulator does not directly vary the frequency of the carrier signal according to the input signal, unlike direct FM modulators.
- Instead, it produces frequency modulation by varying the amplitude of the carrier signal.
- The modulated signal is then passed through a bandpass filter to remove unwanted frequency components and amplify the FM signal.
By using the Armstrong modulator, frequency modulation can be achieved indirectly through the modulation of the carrier signal's amplitude, making it an effective method for generating FM signals in various communication systems.
Armstrong modulator is the indirect way of frequency modulation (FM) generation. It involves using a crystal-controlled oscillator to generate a carrier signal, which is then modulated by the input signal to produce the FM signal.
Key Points:
- The Armstrong modulator does not directly vary the frequency of the carrier signal according to the input signal, unlike direct FM modulators.
- Instead, it produces frequency modulation by varying the amplitude of the carrier signal.
- The modulated signal is then passed through a bandpass filter to remove unwanted frequency components and amplify the FM signal.
By using the Armstrong modulator, frequency modulation can be achieved indirectly through the modulation of the carrier signal's amplitude, making it an effective method for generating FM signals in various communication systems.
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Which of the following is the indirect way of FM generation?a)Reactance bipolar transistor modulatorb)Armstrong modulatorc)Varactor diode modulatord)Reactance FM modulatorCorrect answer is option 'B'. Can you explain this answer?
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