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Which mathematically term is used for calculating FM bandwidth?

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Which mathematically term is used for calculating FM bandwidth?

(a) Bessel functions

(b) Trigonometry

(c) Taylor series

(d) Fractals

The question was posed to me during an interview.

Question is from Chopper Circuit in chapter Side Band Techniques of Analog Communications

1 Answer

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Best answer
Right option is (a) Bessel functions

To explain: Bessel function are the solution of Bessel differential equation which are non-singular at the origin. In communication it is used to calculate FM bandwidth.

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