Research methods development and definitions of the microwave characteristics of the latest isotropic and anisotropic materials and nanoscale films

Detailed test method developed thin dielectric resonator shown its advantages and suitability for study of the dielectric properties of anisotropic materials in thin layers. Very thin dielectric substrate, 0.1 mm thick with a dielectric constant ε > 10 can successfully act as a dielectric resonator (DR) and used for the measurement of microwave parameters of the materials by studying the spectra of thin DR.

Measurement system and software for marine security systems and research platforms

The essence is to develop a multi-purpose passive measurement system based on vector-phase methods for receiving and processing sonar signals, enabling surpass performance characteristics best marine security systems and measurement hardware for research polygons. Developed measuring system is designed for use in marine security systems and researching polygons, designed for noise emissions research fields offshore facilities. On the basis of the measurement system developed variants of marine security systems and the equipment for the researching polygons.

Investigation of the novel semiconductor materials and compounds for implementation in the low-dimensional electron devices manufacturing technologies

Investigation of nanomaterials and prediction of ternary nitrides abilities was carries out for application in the development of ultrahighfrequency micro- and nanoelectronics components. Analysis of dynamical and highfrequency properties of ternary nitrides has shown the possibilities of its application for device development for frequencies up to the hundreds of gigahertz and formation of picosecond pulses.

The capabilities extension of electronic tuning filters with solid-state construction

Solid-state filters with the electric tuning of frequency are the key elements of different multifrequency communication systems possessing increased noise immunity and reliability. It is considered considerable part of perspective communications, including to cellular telephony, will use these filters mainly. This development is the electric tunable filters with the improved responses for the perspective communication equipment, it is sent to development of new element base of Ukraine in area of radio electronics.

Effectiveness increase of wireless communication network operation by radio signals of distributed antenna systems spatial-temporal processing

Sense of work consists in the analysis of modern world progressive trends of wireless communication networks (WCN) with distributed antenna systems (DAS) and also development of methodology of WCN with DAS functioning effectiveness increase on the basis of methods of spatial-temporal processing (STAP) of radio signals.

Development of multichannel transmitters short-centimeter-wave systems for multiple radio access

Theoretical study of intermodulation distortion in nonlinear power amplifier has been done. It relates to a generation of second harmonics of input signal and allowed to present a new linearization principle of these devices, which is based on use of mentioned harmonics energy as a feedback signal. Calculations of impact of described mechanism upon signals of different digital modulation types have been conducted. Significant reduce (up to 25 dB) in crosstalk level has been reached. And 1dB compression level of amplifier output power has almost reached saturation point.

The development and research of the coordinating optimization and control systems of the technical, economical and social processes

New methods of creating optimization and control coordinating systems are worked out.

Namely:

The method of synthesis of multidimensional coordinating control systems with multirate sampling in a deterministic environment based on optimality multirate criteria in a form of reference models of digital control closed circuits. The method provides increasing control accuracy of output coordinates specified ratio in the transition regime in more than 10 times.

System research and practical testing methodology to assess the complex geological processes

The analysis and theoretical-methodological grounding of mathematical models and numerical methods research lithodynamic processes of the earth surface on PEСM. Due to the great complexity and cumbersome computations to determine the stability coefficients of sliding slopes using variational methods for determining the sliding surfaces is possible only with the full computerization of such calculations.

The development of the toolkit of the guaranteed operation security of the complex technical systems in the conditions of the uncertainties and the multifactor risks

Methodological, mathematical and algorithmic toolkit worked out to provide a guaranteed functioning of complex technical systems (CTS), an opportunity to form sufficiently informed decision based on the threshold time limit, the practical implementation of solutions to prevent accidents and disasters in terms of conceptual uncertainty and multifactor risks. Toolkit in the form of an information platform of technical diagnostics in real time is based on the proposed control strategy serviceability and safety of the CTS.

Pages