Français
5. Filters specified in both amplitude and group time
With the exception of an analytical solution (Lerner filters, § 5.3 ), there are practically only numerical solutions to this type of problem. However, if the group time specifications are not too stringent, a solution can often be found by choosing an attenuation function with minimal phase shift. We'll look at these cases in turn.
5.1 Solutions using an attenuation filter
Examination of the group time behavior of a minimum phase-shift attenuation filter shows that the steeper the cutoff,...
The Ultimate Scientific and Technical Reference
This article is included in
Electronics
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Filters specified in both amplitude and group time
Bibliography
References
Tools
Transfer function calculation software
Matlab (Math Works Inc.)
Mathematica
Mathcad
SCILAB
OCTAVE
Network analysis software
Various versions of Spice (Simulation Program with Integrated Circuits Emphasis ), and signal processing software.
Active filter synthesis
...
The Ultimate Scientific and Technical Reference
