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Armstrong F.M. transmitter performs frequency multiplication in stages
- a)to increase the overall S/N
- b)for convenience
- c)to reduce the bandwidth
- d)to find the desired value of carrier frequency with frequency deviation
Correct answer is option 'D'. Can you explain this answer?
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Armstrong F.M. transmitter performs frequency multiplication in stages...
where (Δf) is the frequency deviation.
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Armstrong F.M. transmitter performs frequency multiplication in stages...
Armstrong F.M. transmitter and frequency multiplication
Armstrong F.M. transmitter is a type of frequency modulation (F.M.) transmitter. It uses frequency multiplication in stages to find the desired value of carrier frequency with frequency deviation. Let's understand this in detail.
Frequency multiplication in stages
Frequency multiplication in stages means that the carrier frequency is multiplied in steps to achieve the desired frequency deviation. It involves the following stages:
1. Oscillator
The oscillator generates a low-frequency signal that is then multiplied by a frequency multiplier. The output of the oscillator is a sinusoidal waveform.
2. Frequency multiplier
The frequency multiplier multiplies the frequency of the oscillator signal by a factor of 2, 3, or 4 to produce a higher frequency signal. This signal is then fed into the next stage.
3. Mixer
The mixer combines the output of the frequency multiplier with the audio signal to produce an F.M. signal.
4. Amplifier
The amplifier amplifies the F.M. signal to a level suitable for transmission.
Advantages of frequency multiplication in stages
The advantages of frequency multiplication in stages are:
1. Improved signal quality: Frequency multiplication in stages improves the signal quality by reducing the harmonic distortion.
2. Reduced bandwidth: Frequency multiplication in stages reduces the bandwidth required for transmission.
3. Convenience: Frequency multiplication in stages provides convenience in tuning the transmitter to the desired frequency.
4. Increased S/N ratio: Frequency multiplication in stages increases the signal-to-noise (S/N) ratio by reducing the noise floor.
Conclusion
In conclusion, Armstrong F.M. transmitter uses frequency multiplication in stages to find the desired value of carrier frequency with frequency deviation. This technique improves the signal quality, reduces the bandwidth, and increases the S/N ratio.
Armstrong F.M. transmitter is a type of frequency modulation (F.M.) transmitter. It uses frequency multiplication in stages to find the desired value of carrier frequency with frequency deviation. Let's understand this in detail.
Frequency multiplication in stages
Frequency multiplication in stages means that the carrier frequency is multiplied in steps to achieve the desired frequency deviation. It involves the following stages:
1. Oscillator
The oscillator generates a low-frequency signal that is then multiplied by a frequency multiplier. The output of the oscillator is a sinusoidal waveform.
2. Frequency multiplier
The frequency multiplier multiplies the frequency of the oscillator signal by a factor of 2, 3, or 4 to produce a higher frequency signal. This signal is then fed into the next stage.
3. Mixer
The mixer combines the output of the frequency multiplier with the audio signal to produce an F.M. signal.
4. Amplifier
The amplifier amplifies the F.M. signal to a level suitable for transmission.
Advantages of frequency multiplication in stages
The advantages of frequency multiplication in stages are:
1. Improved signal quality: Frequency multiplication in stages improves the signal quality by reducing the harmonic distortion.
2. Reduced bandwidth: Frequency multiplication in stages reduces the bandwidth required for transmission.
3. Convenience: Frequency multiplication in stages provides convenience in tuning the transmitter to the desired frequency.
4. Increased S/N ratio: Frequency multiplication in stages increases the signal-to-noise (S/N) ratio by reducing the noise floor.
Conclusion
In conclusion, Armstrong F.M. transmitter uses frequency multiplication in stages to find the desired value of carrier frequency with frequency deviation. This technique improves the signal quality, reduces the bandwidth, and increases the S/N ratio.
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Armstrong F.M. transmitter performs frequency multiplication in stagesa)to increase the overall S/Nb)for conveniencec)to reduce the bandwidthd)to find the desired value of carrier frequency with frequency deviationCorrect answer is option 'D'. Can you explain this answer?
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Armstrong F.M. transmitter performs frequency multiplication in stagesa)to increase the overall S/Nb)for conveniencec)to reduce the bandwidthd)to find the desired value of carrier frequency with frequency deviationCorrect answer is option 'D'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about Armstrong F.M. transmitter performs frequency multiplication in stagesa)to increase the overall S/Nb)for conveniencec)to reduce the bandwidthd)to find the desired value of carrier frequency with frequency deviationCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Armstrong F.M. transmitter performs frequency multiplication in stagesa)to increase the overall S/Nb)for conveniencec)to reduce the bandwidthd)to find the desired value of carrier frequency with frequency deviationCorrect answer is option 'D'. Can you explain this answer?.
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