1 / 5

Filter quality “Q” and Filter types

Filter quality “Q” and Filter types. “Q” - Quality factor. Consider a band pass filter. “Q” Examples. Q=1, . “Q” Examples. Q=10,. Filter types. Butterworth - Ripple-free passband and a smooth stop band. Butterworth has least distortion due to almost linear phase.

glynis
Download Presentation

Filter quality “Q” and Filter types

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Filter quality “Q” and Filter types BAE 5413

  2. “Q” - Quality factor • Consider a band pass filter BAE 5413

  3. “Q” Examples • Q=1, BAE 5413

  4. “Q” Examples • Q=10, BAE 5413

  5. Filter types • Butterworth - Ripple-free passband and a smooth stop band. Butterworth has least distortion due to almost linear phase. • Chebyshev - Predetermined passband ripple and requires smaller order than a Butterworth filter for a desired response. Superior for applications where passband includes only one frequency of interest • Elliptical - Equiripple pass- and stop-band, Predetermined amount of passband ripple along with ripple in the stop band. Elliptic filters require smallest order for a desired magnitude response • Bessel -constant propagation delay across the input frequency spectrum • Gaussian -the most gradual pass band roll-off and the lowest group delay. Low distortion across the spectrum. BAE 5413

More Related