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For a Band Pass Filter, the slope of the filter is given as 40dB/decade. The order of the Band Pass Filter is __________

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For a Band Pass Filter, the slope of the filter is given as 40dB/decade. The order of the Band Pass Filter is __________

(a) 2

(b) 3

(c) 4

(d) 6

This question was posed to me by my school principal while I was bunking the class.

The query is from Ideal LPF, HPF, BPF and BSF Characteristics topic in division Signal Transmission Through Linear Systems of Signals and Systems

1 Answer

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Right answer is (c) 4

Explanation: The Bode plot is a logarithmic plot which helps in fitting a large scale of values into a small scale by the application of logarithm. Plotting the slope 40dB/decade on the Bode plot, we get n = 4. Hence the order of the Band Pass Filter is 4.

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