Extra exam question E7C06
Subelement E7, PRACTICAL CIRCUITS· Group E7C
What are the characteristics of an elliptical filter?
- A.Gradual passband rolloff with minimal stop-band ripple
- B.Extremely flat response over its pass band with gradually rounded stop-band corners
- C.Extremely sharp cutoff with one or more notches in the stop band (correct answer)
- D.Gradual passband rolloff with extreme stop-band ripple
WhyAn elliptical filter has an extremely sharp cutoff with one or more notches in the stop band. An elliptical filter is characterized by an extremely sharp cutoff along with one or more notches (deep rejection points) placed in the stop band, a design that pushes filter performance further than a Chebyshev or Butterworth response at the cost of some passband ripple, answer C. It isn't defined by a gradual rolloff or a flat passband with rounded stopband corners, those describe other filter families.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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