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प्रश्न
Explain the amplitude modulation with necessary diagrams.
उत्तर
1. If the amplitude of the carrier signal is modified according to the instantaneous amplitude of the baseband signal.
2. The frequency and the phase of the carrier signal remain constant.
3. It is used in radio and TV broadcasting.
Baseband signal
Carrier signal
Modulated signal
Advantages of AM
- Easy transmission and reception
- Lesser bandwidth requirements
- Low cost
Limitations of AM
- Noise level is high
- Low efficiency
- Small operating range
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संबंधित प्रश्न
Answer briefly.
What is meant by amplitude modulation?
Answer briefly.
What is demodulation?
Answer briefly.
What type of modulation is required for television broadcast?
Answer briefly.
Why does amplitude modulation give noisy reception?
Answer briefly.
Explain why is modulation needed.
To obtain sustained oscillation in an oscillator,
The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called ____________.
What is modulation?
Explain centre frequency or resting frequency in frequency modulation.
List out the advantages and limitations of frequency modulation.
