Physics of Wave Processes and Radio SystemsPhysics of Wave Processes and Radio Systems1810-31892782-294XPovolzhskiy State University of Telecommunications and Informatics1042210.18469/1810-3189.2022.25.2.51-59Research ArticleParametrical synthesis of the complex two-port networks for variants of their inclusion between a source of a signal and a nonlinear part by criterion of maintenance of the set characteristics amplifiers with the general feedbackGolovkovAlexander A.<p>Doctor of Technical Sciences, professor, honored inventor of the Russian Federation, professor of the Department of Aviation Systems and Complexes of Radio Navigation and Radio Communication, Military Educational and Scientific Centre of the Air Force N.E. Zhukovsky and Yu.A. Gagarin Air Force Academy (Voronezh) the Ministry of Defence of the Russian Federation, Voronezh, Russia.</p>
<p><em>Research interests</em>: ways and means of generating and processing signals, receiving, transmitting, protecting and destroying information.</p>valgol2595@gmail.comhttps://orcid.org/0000-0001-8468-0055GolovkovVladimir A.<p>junior scientist of the Military Educational and Scientific Centre of the Air Force N.E. Zhukovsky and Yu.A. Gagarin Air Force Academy (Voronezh) the Ministry of Defence of the Russian Federation, Voronezh, Russia.</p>
<p><em>Research interests</em>: ways and means of generating and processing signals, receiving and transmitting information.</p>valgol2595@gmail.comMilitary Educational and Scientific Centre of the Air Force N.E. Zhukovsky and Y.A. Gagarin Air Force Academy (Voronezh) the Ministry of Defence of the Russian Federation25062022252515925062022Copyright © 2022, Golovkov A.A., Golovkov V.A.2022<p><strong>Introduction</strong>: the analysis of known literature shows that the use of various types of matching quadripoles (reactive, resistive, complex, mixed) and a feedback circuit covering a non-linear element makes it possible to increase the area of physical feasibility of given forms of frequency characteristics. <strong>The purpose of the work</strong> is to increase the area of physical feasibility of given forms of frequency characteristics by optimizing the parameters of matching complex quadripoles and using an additional feedback circuit covering a nonlinear element and a mixed quadripole. Each two-terminal network of such four-terminal networks consists of both resistive and reactive elements. <strong>Materials and methods</strong>: theory of four-terminal networks, matrix algebra, decomposition method, method of synthesis of microwave control devices, circuit engineering method for analyzing the characteristics of radio devices. <strong>Results</strong>: Mathematical models of matching complex quadripole networks are obtained in the form of relationships between the elements of their transmission matrix and the dependences of the resistances of their two-terminal circuits on frequency, which are optimal in terms of the criterion for providing specified forms of frequency characteristics. <strong>Conclusion</strong>: a comparative analysis of the theoretical results (frequency response and phase response of amplifiers) obtained by mathematical modeling in the MathCad system and experimental results obtained by circuit simulation in the OrCad and MicroCap systems shows their satisfactory agreement.</p>parametrical synthesis matching by the complex two-port networksthe set forms of frequency characteristics of amplifiersпараметрический синтез согласующих комплексных четырехполюсниковзаданные формы частотных характеристик усилителей[Golovkov A.A., Golovkov V.A. Parametric Synthesis of Radio Engineering Devices and Systems. Voronezh: VUNTs VVS «VVA», 2018, 588 p. (In Russ.)][Gurevich I.V. Fundamentals of Calculations of Radio Circuits (Linear Circuits with Harmonic Effects). Moscow: Svjaz’, 1975, 368 p. (In Russ.)][Handbook of Radio Electronics. Vol. 3. Ed. by A.A. Kulikovsky. Moscow: Energija, 1970, 413 p. (In Russ.)][Aircraft Radio Control Systems. Ed. by V.S. Verby, V.I. Merkulov. Moscow: Radiotehnika, 2014, 376 p. (In Russ.)][Golovkov A.A., Golovkov V.A. Parametric synthesis of dynamic links of radio-electronic control systems for options for their inclusion between the signal source and the nonlinear part. Informatsionno-izmeritel’nye i upravljajuschie sistemy, 2019, no. 3, pp. 35–44. (In Russ.)]