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Analog ElectronicsActive Filters

A Bessel filter is often selected when the main requirement is good preservation of waveform shape because it emphasizes?

  • AApproximately linear phase and nearly constant group delay in the passband
  • BMaximum passband ripple
  • CInfinite stopband attenuation at cutoff
  • DNegative resistance
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Correct Answer: A. Approximately linear phase and nearly constant group delay in the passband
Explanation: Bessel responses are valued for nearly constant group delay and good transient behavior, helping preserve pulse and waveform shape.
Reference: Standard analog electronics: Bessel filter
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