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Subject: New method to calculate mismatcxhed ladder filters

Date: 01/22/02 at 6:02 PM
Posted by: Sergey Karavashkin
E-mail: sbkarav@altavista.com
Message Posted:

When an electric circuit was mismatched itself, or under the load, or in the signal source impedance, such circuits are known to be incalculable exactly. We have developed the original method for such circuits calculation based on our original Dynamical Electromechanical Analogy DEMA. This method offers to calculate ladder filters having any number of sections, transmission lines having any length and heterogeneities inside the line, under the load of any type and with any type of the source interior impedance. By this method we obtain the 3D amplitude and phase-frequency characteristics of a line, where as a third dimension we can give any variable parameters of the system and yield the amplitude of as input impedance as output signal parameters as transmission coefficients of the line sections. Our method perfectly works also for lines composed of distributed and lumped parameters. Especially are interesting the lines whose each element is in its turn a resonance subsystem. Our method successfully solves the problems of such kind too.
Of course, our method is new, now we have it established only for the main basic models, however we have worked out all mentioned models. The complex of problems solvable by this method proves its power and opens the outlook. We have checked this method experimentally. The calculation diagrams coincide with those experimental up to the shades conventionally thought to be the experimental noise.
Please visit the homepage of our laboratory at
and read more detailed proposal there.
Our electronic journal SELF Transactions can give you much additional information at http://angelfire.lycos.com/la3/SELFlab
You can find there both our mentioned and other interesting results.

Sergey Karavashkin
Head laboratory SELF

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