Bandwidth

Spectrum of WBFM signal for triangular message signal spectrum

Spectrum of WBFM signal for triangular message signal spectrum
  1. What is FM signal spectrum?
  2. What is WBFM modulation?
  3. What is the standard bandwidth of AM and FM Mcq?

What is FM signal spectrum?

The frequency band for FM radio is about 88 to 108 MHz. The information signal is music and voice which falls in the audio spectrum. The full audio spectrum ranges form 20 to 20,000 Hz, but FM radio limits the upper modulating frequency to 15 kHz (cf. AM radio which limits the upper frequency to 5 kHz).

What is WBFM modulation?

Wide Band Frequency Modulation or WBFM is done when Modulation Index is greater than 1. In this video Mr. Raj Kumar Thenua explain wideband frequency modulation, its requirement and properties. After this he shows General Expression of WBFM.

What is the standard bandwidth of AM and FM Mcq?

B.W. required in AM is = 2fm. Hence, less bandwidth is required in case of AM and the bandwidth required in case of FM is 2(β + 1)fm. Therefore, the bandwidth required is more in FM as compared to AM.

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