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1. Specifications
Classically, filter specifications can be expressed either in the frequency domain or in the time domain, depending on the nature of the problem to be solved and the implementation technology.
Unless otherwise indicated, inputs and outputs are voltages (figure 1 ).
1.1 Frequency domain
The specifications consist of the filter's attenuationA (expressed in decibels) and phasej behavior:
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Specifications
Filter synthesis methods
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
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