Subject : Principle of Communication Engineering

Topic : Amplitude Modulation and Demodulation

Difficulty : High

Carson Rule

• Frequency Modulation creates modulation sidebands that theoretically extend to infinite bandwidth.

• These sidebands consist of Bessel Functions of any order. From a practical standpoint the band occupancy of an FM modulated carrier only needs to count the Bessel Function sidebands of significant amplitude.

  Carson's bandwidth rule is expressed …