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For a Band Pass Filter, the slope of the filter is given as 80dB/decade. The order of the Band Pass Filter is __________(a) 10(b) 8(c) 4(d) 6This question was posed to me during an interview.My question is based upon Advanced Problems on Filters topic in division Filters and Attenuators of Network Theory

Answer»

The correct option is (b) 8

Easiest 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 80dB/decade on the Bode plot, we get n=8. Hence the order of the BAND Pass FILTER is 8.



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