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3. Methods for synthesizing filters from their transfer function
To calculate and manufacture an active filter, we start by calculating its voltage transfer function from the specifications (figure
). This step is described in detail in the article Transfer functions of electrical filters
The voltage transfer function is always a rational fraction in p of the form :
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Methods for synthesizing filters from their transfer function
Bibliography
References
Software
The calculation of an active filter is divided into two distinct parts:
transfer function calculation ;
calculation of the numerical values of the elements included in the production diagram.
Filter transfer functions can be calculated using general mathematical software such as MATLAB, Mathematica or Mathcad,...
Manufacturers, constructors
Analog Device http://www.analog.com/
Burr Brown (see Texas Instrument)
Linear Technology http://www.linear.com/
Maxim http://www.maxim-ic.com/
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