A mathematical model of an active four-port device for a wideband amplifier with the two-port serial and parallel feedback

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Authors: Yakushevich G. N.

Annotation: There are given a mathematical model of an active four-port device for a wideband amplifier on a basis of provided forward coefficients, reflection coefficients and the structure of the combinatory feedback two-port. There is also given the structure circuit of the active four-port described by the active element with phaseforming and providing symmetry circuits at the input and output.

Keywords: mathematical model, active four-port device, wideband amplifier, serial and parallel feedback twoport