Tkachuk Y. Multiparameter generalized immitance converters and generator sensors on their basis

Object of study - the process of information signals converting in data processing means with frequency output; the aim of the research is to improve the technical characteristics of information and measurement systems components using multistage connection of GIC, based on FET structure; methods used the matrix theory, theory of complex numbers, theory of conformal mapping, theory of stability, theory of immitance converters and electronic circuit analysis, theory of immitance conversion tables synthesis; The theoretical results are: the first time proposed parameter optimization method of radiofrequency sensors based on GIC, that provides maximum sensor sensitivity in zones of GIC absolute stability and potential instability, and allows to build generating and reinforcing sensors; the first time developed a mathematical model of generating three-parameter sensor based on two-stage GIC, which describes the interrelation between sensor parameters and the parameters of GIC and PMC, allowing to conduct the sensor sensitivity analysis; received the further development mathematical model of multistage GIC formed by combination of N threepoles, which differs from the existing by taking into account the electrical parameters of FET structure and describes the dependence of the multistage GIC converted conductivity as on the number of stages N, and on the values of converted resistances (Z0 ... ZN). Practical results - parameters of two-parameter GIC, based on field effect transistor were studied, which allowed to determine their sensitivity to destabilizing factors, conditions of potential instability and to develop single-chip generating sensors; the electric circuits of two- and three-parameter generating sensors were designed and explored; sensors sensitivity analysis was conducted, allowing to search for the optimal combination of GIC stages in terms of maximum sensitivity of the sensor; a software to determine the nductively-resistive generating sensor main parameters was developed, and can be used for their engineering calculations. The degree of implementation - the results of studies are implemented and used in the research and production enterprise "VTN" and in the educational process in Vinnytsia National Technical University at the Department of Computer and Telecommunication Equipment Design. Scope (industry) of application - information and measuring systems of control, security alarm and transient processes.