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Article | REF: E120 V1

Transfer function of electrical filters

Authors: Gaëlle LISSORGUES, Corinne Berland

Publication date: February 10, 2009, Review date: May 21, 2024

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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:

A=20  lg|V1V2|

...

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