ISRO Electronics & Communication (ECE) 2012 - Question 11

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Topic: Analog Circuits

For Butterworth and Chebyshev filters, the correct statement is

  • A. Butterworth response has a sharp cut-off
  • B. Chebyshev response has a flat response in the pass band
  • C. Butterworth response has ripples in the pass band
  • D. Chebyshev response has ripples in the pass band

Answer: D. Chebyshev response has ripples in the pass band

Explanation: Difference between Butterworth and Chebyshev filter: The magnitude response ($|H(\omega)|$) of Butterworth filter decreases with increase in frequency from 0 to $\infty$, while the magnitude response of the Chebyshev filter fluctuates or show ripples in the pass band and stop-band depending on the type of the filter.

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