INVESTIGATION OF THE GRAPHOANALYTICAL METHOD OF DETERMINING THE STANDARD W-PARAMETERS OF THE FOUR-POLE
Oleksandr Wozniak - сandidate of Science (Engineering), Associate Professor of the Department of
Electric Power Engineering, Electrical Engineering and Electromechanics of Vinnitsa National Agrarian
University (3 Soniachna St., Vinnitsa, 21008, Ukraine, email: firstname.lastname@example.org).
Andriy Vidmysh - Candidate of Science (Engineering), Associate Professor of the Department of Electric
Power Engineering, Electrical Engineering and Electromechanics of Vinnitsa National Agrarian University
(3 Soniachna St., Vinnitsa, 21008, Ukraine, email: email@example.com).
Andriy Stuts - аssistant Professor at Vinnitsa National Agrarian University (3 Soniachna St., Vinnitsa,
21008, Ukraine, email: firstname.lastname@example.org).
The level of social and economic development of modern society is determined by the volume, speed and
quality of information processing by methods and technical means. Measurement and information
processing systems are becoming an integral part of production automation.
The development of radio electronics is inextricably linked with the development of measurements, and
the state of modern radio electronics is largely determined by the level of development of measurement
methods and the availability of sufficiently advanced measuring equipment to measure the parameters of
radio-electronic devices, in particular transistors, allows: first, exploitation; second, to provide the source
material for calculating the devices; third, to judge their internal properties and technological features in
an average way; fourth, to design new, high-quality devices.
The intensification and automation of the processes of production, complication and expansion of the
front of scientific experiments entails the need to develop fundamentally new methods and means of
measuring transistor parameters based on new algorithms and computers.
Increasing the level of semiconductor devices, improving their performance, will inevitably affect
potential stability over a wide frequency range. Classical methods and standard measuring equipment arenot designed to measure the parameters of potentially unstable transistors. The measurement systems are
uncontrollably excited, which increases the measurement error. Therefore, the current task is to measure
the parameters of both transistors in particular and quadruplets in general, in the frequency range of
The clock speed at which modern computer technology operates is very close to the microwave range
(ultra high frequencies), which makes the problem of measuring and calculating various functional units
of computers and operating elements quite relevant.
The development of new methods and means for measuring the parameters of potentially unstable
quadruplets in the microwave range is an important scientific area, which can significantly improve the
accuracy of their measurement on standard equipment.
Improving the performance of the microwave range devices can be achieved both through the use of a
fundamentally new element base and through the use of new circuit designs. Promising in this regard is
the direction of using the reactive properties of transistors, as well as transistor structures with a negative
resistance for the construction of information-measuring systems and operating and computing devices of
the microwave range.
The graphical methods for determining the parameters of an equivalent four-pole according to the
measurement results are, as a rule, much more convenient than analytical ones. Having a mathematical
equation and its graphical interpretation, it is relatively easy to determine the required quantities by
solving graphical techniques. There are several ways of graphically depicting the relationships that
characterize the impedance (conductivity). The following two are the most convenient:
1) pie chart of total resistance in rectangular coordinates ;
2) circular diagram of the total resistance in polar coordinates, proposed for the first time by Soviet
scientist AR Volpert .
 Bessonov, L. A. (1973). Theoretical foundations of electrical engineering. M.: High school. [in
 Smith, F. (1976). Pie charts in radio electronics.(English Trans.). M .: Svyaz. [in Russian].
 Bogachev, V. M., Nikiforov, V.V. (1978).Transistor power amplifiers. M .: Energy. [in Russian].
 Wozniak, O. M., Rudik, A. V. (1998). The method of measuring the complete system of Y-parameters
of the conductivity matrix of microwave quadruplets. Proceedings of the International Symposium :
Appendix to the All-Ukrainian scientific and technical journal "Vibrations in Engineering and
Technology". (pp. 308–310). WITH. [in Ukrainian].
 Bova, A. T., Leichtman, I. B. (1968). Measurement of parameters of waveguide elements. Kyiv:
Technology. [in Russian].
 Filinyuk, M. A., Wozniak, O. M, Kurzanov I. I., Ogorodnik O. V. (2017). Ukrainian patent
No.18059 A, NOZN 11/00, Impedansnyi prystrii. Ukraine: State Intellectual Property Service of
Ukraine. [in Ukrainian].
 Filinyuk, N. A., Peskov S. N., Pavlov, S. N. (1982). Determination of parameters of the physical
equivalent circuit of RF transistors. Radioelectronics (Izv. Higher education institutions), 12, 38–43.
 Abubakirov, B. A., Gudkov, K. G., Nechaev, E. V. (1984). Measurement of parameters of radio
circuits. In V. G. Andrushchenko, B. P. Fativa (Eds.). M .: Radio and Communication. [in Russian].
 Filinyuk, M. A. Ogorodnik, K. V. (2005). Information-measuring system for determining the
parameters of active quadrupeds. Control and Control in Complex Systems : Abstracts of the VIII
International Conference (pp. 73). Vinnytsia. [in Ukrainian].
 Filinyuk, N. (1987). Active microwave filters on transistors. M.: Radio and communication. [in
 Filinyuk, M. A., Ogorodnik, K. V., Lazarev, O. O. (2005). Ukrainian patent No. 7267, MKI
G01R27/28. Method of measuring non-standard system of S-parameters in quadrupole. Ukraine: State
Intellectual Property Service of Ukraine. [in Ukrainian].
The journal "Engineering, Energy, Transport AIC" on its pages presents materials on the following issues:
• Machine use in crop production and in animal husbandry
• Technical service of mobile equipment
• Processes and equipment for processing and food productions
• Mechanical engineering and material processing
• Energy technology and alternative energy sources
• Transport and transport-technological processes and equipment
• Automation of technological processes
• Opinion of a young scientist
ISSN (print): 2520-6168
Certificate of state registration of mass media: No. 21906-11806 P dated 03/12/2016.
Founder of the journal: Vinnytsia National Agrarian University
Editor-in-chief: Tokarchuk Olexiy A.
Ph.D., Assoc., VNAU (Vinnytsia)
Deputy Editor-in-Chief: Veselovska Nataliia R.
Doctor of Technical Sciences, Full Prof., VNAU (Vinnytsia)
Executive Secretary: Polevoda Yuri A.
Ph.D., Assoc., VNAU (Vinnytsia)
Members of the Editorial Board:
Tokarchuk O.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Veselovska N.R. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Agrarian University
Bulgakov V.M. - Doctor of Technical Sciences, Full Professor, Acad. NAAS, National University of Life and Environmental Sciences of Ukraine
Iskovich-Lototsky R.D. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Technical University
Bandura V. N. - Ph.D., Full professor, Vinnytsia National Agrarian University
Polevoda Yu.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tsurkan A.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Ivanchuk Y.V. - Ph.D., Associate Professor, Vinnytsia National Technical University
Jordan Todorov Maximov - Doctor of Technical Sciences, Full Professor, Technical University of Gabrovo (Bulgaria)
Type of publication: journal
Kind of publication: scientific
Publication status: domestic
Year of foundation: 1997
Periodicity: 4 times per year
Volume: 18.75 conv. print. sheet
ISSN: 2520-6168 (print version), (online version)
Language of publication: (mixed languages) Ukrainian, Russian, English
The sphere of distribution and category of readers: national, foreign, faculty, scientists, entrepreneurs.
The periodical edition is included to the List of scientific professional publications of Ukraine on technical sciences, approved by order of the Ministry of Education and Science of Ukraine in 05.16.2016, No. 515.
The journal "Engineering, Energy, Transport AIC" is included in the "Catalog of Ukrainian Publications".
Subscription to the journal can be issued in each post office. The subscription index is 99720.
It was founded in 1997 under the title "Bulletin of the Vinnitsa State Agricultural Institute." According to the Decree of the Presidium of the Higher Attestation Commission of Ukraine of September 11, 1997, this publication received the status of a professional in which it is allowed to publish the main results of dissertation researches.
In 2001-2014 the journal published under the title “Collection of scientific works of Vinnytsia National Agrarian University. Series: Technical Sciences "(Certificate of State Registration of Mass Media KV No. 16644-5116 PR of 04/30/2010).
Since 2015 journal has title "Engineering, Energy, Transport AIC" (Certificate of State Registration of Mass Media No. 21906-11806 P dated 03/12/2016).