Why fm is called constant bandwidth system?
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Answered by
7
The simplest answer is that "Because the bandwidth does not increase quickly as compared to the modulation frequency in the FM".
In the FM sideband frequency actually dependent on the modulation signal amplitude and this can be held without creating any disturbance in the modulation signal. So the bandwidth can be held constant by just maintaining constant amplitude by the modulation system. This is why the FM is also can be called the constant bandwidth system
In the FM sideband frequency actually dependent on the modulation signal amplitude and this can be held without creating any disturbance in the modulation signal. So the bandwidth can be held constant by just maintaining constant amplitude by the modulation system. This is why the FM is also can be called the constant bandwidth system
Answered by
6
FM is called a constant bandwidth system because:
1. The amplitude of a frequency modulated signal remains constant.
2. The power in the transmitted signal remains constant.
3. The bandwidth does not increase rapidly as the modulation frequency increases.
FM has a better sound quality due to higher bandwidth.
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