Анатолий Орлов - Profile on Academia.edu (original) (raw)
Papers by Анатолий Орлов
Вісник Національного технічного університету України Київський політехнічний інститут. Серія: Радіотехніка. Радіоапаратобудування, 2010
Fano resonance and metamaterial cells equivalent circuits
2019 International Conference on Information and Telecommunication Technologies and Radio Electronics (UkrMiCo)
simulation of various kinds of physical oscillatory and wave processes using equivalent electrica... more simulation of various kinds of physical oscillatory and wave processes using equivalent electrical circuits was used as early as the 19th century. In some cases, it contributes to a deeper understanding of the essence of the processes and an adequate assessment of the experimental results. That is why lattice electrical circuits are effective as models of Fano resonance and metamaterial cells. In particular, they let us give a simple explanation of the seemingly exotic properties of metamaterial cells, such as "superquality", "counter-directionality" of group and phase velocities. A new equivalent electrical circuit of the Helmholtz resonator was also proposed.
Coupler-joint on coaxial transmission lines
Electronics and Communications, 2013
Наведені конструкції та результати експериментальних досліджень, спрямованих відгалужувачів у діа... more Наведені конструкції та результати експериментальних досліджень, спрямованих відгалужувачів у діапазоні частот від 2 до 18 ГГц на основі напівжорстких коаксіальних ліній передачі, що випускаються серійно. Відгалужувачі забезпечують перехідне затухання від 3 до 20 дБ при розв’язуванні до 28дБ в частотному діапазоні однієї октави та призначені для одночасного вирішення задач відгалужування енергії і з’єднання окремих вузлів НВЧ апаратури.Constructions and results оf the experimental research of directional couplers based on semirigid coaxial series-produced transmission lines in 2….18 GHz frequency range are described.Couplers provide coupling from 3 to 20 dB with directivity up to 28 dB in one octave frequency range and accommodated for simultaneous decision of the tasks of energy branching and connecting of separate microwave units in apparatus.Приведены конструкции и результаты экспериментальных исследований в диапазоне частот от 2 до 18 ГГц направленных ответвителей на основе выпускаемых серийно полужестких коаксиальных линий передачи. Ответвители обеспечивают переходное ослабление от 3 до 20 дБ при развязке до 28 дБ в частотном диапазоне одной октавы и предназначены для одновременного решения задач ответвления энергии и соединения отдельных узлов СВЧ аппаратуры
Thin film bulk wave acoustic resonators (FBAR) based filters
2004 14th International Crimean Conference "Microwave and Telecommunication Technology" (IEEE Cat. No.04EX843), 2004
ABSTRACT The advantages, constructions, materials for production of FBAR are analyzed. Active sch... more ABSTRACT The advantages, constructions, materials for production of FBAR are analyzed. Active schemes of filters based on FBAR are proposed, and the results of modeling of active piezoelectric filters are discussed.
Influence of ZnO nanorods on sensitivity of SAW mass sensor
2017 IEEE 37th International Conference on Electronics and Nanotechnology (ELNANO), 2017
The article contains the analysis of the influence of ZnO nanorods parameters on sensitivity of s... more The article contains the analysis of the influence of ZnO nanorods parameters on sensitivity of surface acoustic wave (SAW) mass sensors on the lithium niobate substrate. The model of SAW mass-sensitive sensor enhanced with ZnO nanorods was built by the finite element method. The dependences of the resonant frequency of the SAW sensor on the mass loading on the lithium niobate and lithium niobate with ZnO nanorods were calculated. Applying of ZnO nanorods as sensing element allowed increasing of sensor sensitivity in about 4 times.
Filter realization technique based on gyrator-resonator circuit replacement
2016 IEEE 36th International Conference on Electronics and Nanotechnology (ELNANO), 2016
The application of active elements such as gyrator and negative capacitance simulator in conjunct... more The application of active elements such as gyrator and negative capacitance simulator in conjunction with piezoelectric resonators allows to imitate simple LC circuits employed in bandpass, low-pass and high-pass filter design. In contrast to the circuits composed of distributed elements, active circuits with resonators provide minimal sensitivity to component variations and less parameter offsets during production. They also have smaller dimensions and can be integrated with digital signal processing on a single chip including the possibility electronic adjustment. The replacement principle of LC circuit prototypes by the active analogs is described in details. The active low-pass filter was designed and analyzed using the presented approach to review the special considerations about resonators application.
Principles of constructing an efficient acousto-optical bragg cell
Semiconductors, 2017
A semiconductor pressure transducer consisting of a sensing resistor implanted into a silicon mem... more A semiconductor pressure transducer consisting of a sensing resistor implanted into a silicon membrane as an elastic mechanical element is studied by the modulation polarimetry technique. Internal mechanical stresses are detected. The coordinate distributions of uniaxial stresses are measured in two cases: stresses remaining from local crystal doping inhomogeneities and stresses caused by heating by flowing current. The coordinate distribution of the temperature caused by the heat flux released by the resistor current is determined by double integration of the stress function, taking into account corresponding boundary conditions.
ZnO nanorods on the 128LN substrate for surface acoustic wave sensors
2014 European Frequency and Time Forum (EFTF), 2014
ABSTRACT This paper presented the new results of ZnO nanorods synthesis on 128-XY LiNbO 3 substra... more ABSTRACT This paper presented the new results of ZnO nanorods synthesis on 128-XY LiNbO 3 substrate by low-temperature methods. It was shown that the quality of ZnO nanorods could be enhanced by post-growth thermal processing. ZnO nanorods were coated by Pt layer for selective detection of hydrogen. Application of ZnO nanorods increased the effective surface area and therefore sensitivity of the SAW sensor. Proposed sensor configuration could be applied in smart integrated sensor systems.
Morphology and structure of ZnO nanorods for saw sensors applications
The new results of the single-crystalline zinc oxide nanorods synthesis on the lithium niobate su... more The new results of the single-crystalline zinc oxide nanorods synthesis on the lithium niobate substrate by the hydrothermal growth using zinc acetate as a precursor for both seed-layer and nanostructures array, are presented. The formed nanostructures could be applied as a sensing element for acoustic wave based sensors.
Mass sensitivity of nanostructure-enhanced SAW sensors on different substrate materials
It was shown that SAW sensor on the lithium niobate substrate with ZnO nanorods synthesized as th... more It was shown that SAW sensor on the lithium niobate substrate with ZnO nanorods synthesized as the sensing element demonstrated the sensitivity of 6.24·10-17 g/Hz to the mass loading while SAW sensor on the quartz substrate – 2.29·10-15 g/Hz due to higher square piezoelectric coupling coefficient of the first substrate.
A sensors kit for a versatile reconfigurable measuring platform
A new flexible, low-cost measuring platform, containing lightweight, small size and low-power int... more A new flexible, low-cost measuring platform, containing lightweight, small size and low-power intelligent ad-hoc sensors has been presented. By a sensor platform we mean one employed in monitoring changes in its surroundings. This network was designed for use in a number of different applications, including environmental, chemical, biological and climatic monitoring.
Sensors and Actuators A: Physical, 2015
The sensors of ultraviolet radiation consisted of apodized IDTs and RMSC. Zinc oxide nanorods w... more The sensors of ultraviolet radiation consisted of apodized IDTs and RMSC. Zinc oxide nanorods were used as UV-sensitive layer. The frequency shift was above 140 kHz for UV radiation of 46.52 µW/cm 2 (λ=365 nm). The recovery time of sensors was reduced at a gas-discharge plasma impact process.
SAW UV sensor based on ZnO and Al-doped ZnO nanorods
2015 IEEE 35th International Conference on Electronics and Nanotechnology (ELNANO), 2015
The original results of the development of ultraviolet sensor based on surface acoustic wave reso... more The original results of the development of ultraviolet sensor based on surface acoustic wave resonator with apodized interdigital transducers and reversing multistrip coupler were presented. ZnO nanorods or Al-doped nanorods grown by hydrothermal method were applied as sensing layer. The frequency shift for the modified with ZnO nanorods sensor was about 150 kHz while for the modified with Al-doped ZnO nanorods sensor the frequency shift was about 100 kHz. Both types of coating provided excellent selectivity for ultraviolet radiation. The ultraviolet sensor based on surface acoustic waves demonstrated good repeatability but complete recovery of the central frequency was about 60 min.
High-performance macromodel of the quarter-wavelength solidly mounted resonator
2015 IEEE 35th International Conference on Electronics and Nanotechnology (ELNANO), 2015
ABSTRACT This article discusses the recently developed performance-oriented macromodel of the sol... more ABSTRACT This article discusses the recently developed performance-oriented macromodel of the solidly mounted resonator and its advantages manifested in high-order piezoelectric filter design. The proposed model allows the straightforward integration of the thin film resonator's electrical behavior into the most of modern CAD systems as a part of complex RF circuit solutions and enables the precise evaluation of the output characteristics in a relatively wide near-resonant frequency range. It is shown further that an important feature of the model is its homogeneous multiloop structure which opens the possibility of fine complexity adjustment in order to obtain either high accuracy results or high performance during calculation. In addition, the model takes into account the influence of the most significant electro-acoustic effects related to the electrode mass loading and quarter-wavelength stack reflectance. Validation was performed on the example of PCS CDMA 3-stage ladder filter design and showed more than 15-fold improvement in calculation time in multi-objective optimization case.
Modified operational transconductance amplifier macromodel application in piezoelectric active filter design
ABSTRACT A modified macromodel of operational transconductance amplifier is proposed for applicat... more ABSTRACT A modified macromodel of operational transconductance amplifier is proposed for application in design of high-frequency bandpass active filters based on film bulk acoustic resonators. The presented solution is an optimal tradeoff according to the criteria of completeness of simulated characteristics, its accuracy and calculation time. Nonlinear amplification behavior of the macromodel is modelled by minimax Chebyshev approximation which allows the use of highorder polynomials and solves the convergence challenge. At the same time, bias-dependent noise model accounts for Johnson-Nyquist and flicker noise sources enabling the evaluation of active filter's signal-to-noise ratio, noise figure and output dynamic range. Finally, the differential active filter circuit was analyzed to validate the macromodel's capabilities, simulation ranges and filter characteristics.
Modern printing technologies in micro- and nanoelectronics
2013 IEEE XXXIII International Scientific Conference Electronics and Nanotechnology (ELNANO), 2013
ABSTRACT The trends in microminiaturization in printing are considered and some features of dispe... more ABSTRACT The trends in microminiaturization in printing are considered and some features of dispersed systems in nano sized scale as well as their applications discussed. Nanoparticles, nanostructures, nanocomposites are regarded as dispersed formations with unique properties due to quantum-sized and surface effects. The summary of photolithography in macro- and microelectronics is given, underlining the disadvantages of it in fabrication of electronic devices due to the light wavelength limits. The detailed analysis of nanotechnology in photography and printing is made, including micro- and nanocontact printing, or imprinting lithography, for what the short history of Graphic Arts development is overviewed as for applications of dispersed materials. Some perspectives of digital micro- and nanoprinting in nanoelectronics, nanophotonics, security printing, active and “intelligent” packaging are outlined, pointing out the importance of nanocomposites of metal oxides and halides for printed luminescent tags for smart food packaging. Nanosized ZnO was considered as a promising substance for printed application to active and “intelligent” packaging as well as nanophotonic devices. The experiments were carried out in order to determine the influence of the state of a packaged product on the properties of ZnO nanofilms. The results open the possibility to combine the properties of the films in development of devices for nanophotonics and smart packaging.
Электроника и связь, Jul 30, 2015
The simplified RLC model of Bragg reflector impedance was developed and presented in this work. T... more The simplified RLC model of Bragg reflector impedance was developed and presented in this work. The model allows the straightforward integration of the reflector's electrical behavior into the most of modern CAD systems as a part of complex devices and enables the precise evaluation of the output characteristics in a relatively wide nearresonant frequency range. This is especially important in the modelling of RF systems composed of thin film bulk acoustic resonators. The model verification was given including the analysis of the total impedance frequency dependence in wide and narrow frequency ranges, the model agreement examination for different number of layers and using various materials. The evaluation of agreement error for different frequency bands presented which allowed one to determine the limits of applicability of RLC model. An important advantage of proposed solution is the decreasing of calculation time and improving of optimization efficiency of complex RF circuits with a large number of resonators. References 10, figures 6, tables 2.
Microsystems, Electronics and Acoustics
Creation of high-sensitive sensor of mechanical vibrations, capable of non-distorted transformati... more Creation of high-sensitive sensor of mechanical vibrations, capable of non-distorted transformation of the vibrations source energy into electric signal within a wide dynamic range, is necessary for determination of characteristics of the source as well as for obtaining the information on parameters of medium in which the vibrations propagate. Fast and successful usage of obtained data can be achieved with employment of programming algorithms of identification of type of a source of vibrations and finding their fundamental Eigen frequencies and quality factors of the structures at these frequencies. Calculations of the schematic-and-technical decisions, selection of elements, making of mock-ups, and working-out of variants of the sensor. Mathematical modeling, analysis and identification of dynamical parameters of the structures in which there are used the fundamental eigenfrequencies and the structures’ quality factors at these frequencies. The Fourier and wavelet analyses of the s...
Theory and methods of e-learning, 2014
У зв’язку із загальною інформатизацією освіти і швидким розвитком цифрових засобів обробки інформ... more У зв’язку із загальною інформатизацією освіти і швидким розвитком цифрових засобів обробки інформації назріла необхідність впровадження в лабораторні практикуми вищих та середніх навчальних закладів цифрових засобів збору, обробки та оформлення експериментальних результатів, в тому числі під час виконання лабораторних робот з основ електротехнічних пристроїв та систем. При цьому надмірне захоплення віртуальними лабораторними роботами на основі комп’ютерного моделювання в порівнянні з реальним (натурним) експериментом може призводити до втрати особової орієнтації в технології освіти і відсутності надалі у випускників навчальних закладів ряду практичних навичок.У той же час світові компанії, що спеціалізуються в учбово-технічних засобах, переходять на випуск учбового устаткування, що узгоджується з комп’ютерною технікою: аналого-цифрових перетворювачів і датчиків фізико-хімічних величин, учбових приладів керованих цифро-аналоговими пристроями, автоматизованих учбово-експериментальних...
Вісник Національного технічного університету України Київський політехнічний інститут. Серія: Радіотехніка. Радіоапаратобудування, 2010
Fano resonance and metamaterial cells equivalent circuits
2019 International Conference on Information and Telecommunication Technologies and Radio Electronics (UkrMiCo)
simulation of various kinds of physical oscillatory and wave processes using equivalent electrica... more simulation of various kinds of physical oscillatory and wave processes using equivalent electrical circuits was used as early as the 19th century. In some cases, it contributes to a deeper understanding of the essence of the processes and an adequate assessment of the experimental results. That is why lattice electrical circuits are effective as models of Fano resonance and metamaterial cells. In particular, they let us give a simple explanation of the seemingly exotic properties of metamaterial cells, such as "superquality", "counter-directionality" of group and phase velocities. A new equivalent electrical circuit of the Helmholtz resonator was also proposed.
Coupler-joint on coaxial transmission lines
Electronics and Communications, 2013
Наведені конструкції та результати експериментальних досліджень, спрямованих відгалужувачів у діа... more Наведені конструкції та результати експериментальних досліджень, спрямованих відгалужувачів у діапазоні частот від 2 до 18 ГГц на основі напівжорстких коаксіальних ліній передачі, що випускаються серійно. Відгалужувачі забезпечують перехідне затухання від 3 до 20 дБ при розв’язуванні до 28дБ в частотному діапазоні однієї октави та призначені для одночасного вирішення задач відгалужування енергії і з’єднання окремих вузлів НВЧ апаратури.Constructions and results оf the experimental research of directional couplers based on semirigid coaxial series-produced transmission lines in 2….18 GHz frequency range are described.Couplers provide coupling from 3 to 20 dB with directivity up to 28 dB in one octave frequency range and accommodated for simultaneous decision of the tasks of energy branching and connecting of separate microwave units in apparatus.Приведены конструкции и результаты экспериментальных исследований в диапазоне частот от 2 до 18 ГГц направленных ответвителей на основе выпускаемых серийно полужестких коаксиальных линий передачи. Ответвители обеспечивают переходное ослабление от 3 до 20 дБ при развязке до 28 дБ в частотном диапазоне одной октавы и предназначены для одновременного решения задач ответвления энергии и соединения отдельных узлов СВЧ аппаратуры
Thin film bulk wave acoustic resonators (FBAR) based filters
2004 14th International Crimean Conference "Microwave and Telecommunication Technology" (IEEE Cat. No.04EX843), 2004
ABSTRACT The advantages, constructions, materials for production of FBAR are analyzed. Active sch... more ABSTRACT The advantages, constructions, materials for production of FBAR are analyzed. Active schemes of filters based on FBAR are proposed, and the results of modeling of active piezoelectric filters are discussed.
Influence of ZnO nanorods on sensitivity of SAW mass sensor
2017 IEEE 37th International Conference on Electronics and Nanotechnology (ELNANO), 2017
The article contains the analysis of the influence of ZnO nanorods parameters on sensitivity of s... more The article contains the analysis of the influence of ZnO nanorods parameters on sensitivity of surface acoustic wave (SAW) mass sensors on the lithium niobate substrate. The model of SAW mass-sensitive sensor enhanced with ZnO nanorods was built by the finite element method. The dependences of the resonant frequency of the SAW sensor on the mass loading on the lithium niobate and lithium niobate with ZnO nanorods were calculated. Applying of ZnO nanorods as sensing element allowed increasing of sensor sensitivity in about 4 times.
Filter realization technique based on gyrator-resonator circuit replacement
2016 IEEE 36th International Conference on Electronics and Nanotechnology (ELNANO), 2016
The application of active elements such as gyrator and negative capacitance simulator in conjunct... more The application of active elements such as gyrator and negative capacitance simulator in conjunction with piezoelectric resonators allows to imitate simple LC circuits employed in bandpass, low-pass and high-pass filter design. In contrast to the circuits composed of distributed elements, active circuits with resonators provide minimal sensitivity to component variations and less parameter offsets during production. They also have smaller dimensions and can be integrated with digital signal processing on a single chip including the possibility electronic adjustment. The replacement principle of LC circuit prototypes by the active analogs is described in details. The active low-pass filter was designed and analyzed using the presented approach to review the special considerations about resonators application.
Principles of constructing an efficient acousto-optical bragg cell
Semiconductors, 2017
A semiconductor pressure transducer consisting of a sensing resistor implanted into a silicon mem... more A semiconductor pressure transducer consisting of a sensing resistor implanted into a silicon membrane as an elastic mechanical element is studied by the modulation polarimetry technique. Internal mechanical stresses are detected. The coordinate distributions of uniaxial stresses are measured in two cases: stresses remaining from local crystal doping inhomogeneities and stresses caused by heating by flowing current. The coordinate distribution of the temperature caused by the heat flux released by the resistor current is determined by double integration of the stress function, taking into account corresponding boundary conditions.
ZnO nanorods on the 128LN substrate for surface acoustic wave sensors
2014 European Frequency and Time Forum (EFTF), 2014
ABSTRACT This paper presented the new results of ZnO nanorods synthesis on 128-XY LiNbO 3 substra... more ABSTRACT This paper presented the new results of ZnO nanorods synthesis on 128-XY LiNbO 3 substrate by low-temperature methods. It was shown that the quality of ZnO nanorods could be enhanced by post-growth thermal processing. ZnO nanorods were coated by Pt layer for selective detection of hydrogen. Application of ZnO nanorods increased the effective surface area and therefore sensitivity of the SAW sensor. Proposed sensor configuration could be applied in smart integrated sensor systems.
Morphology and structure of ZnO nanorods for saw sensors applications
The new results of the single-crystalline zinc oxide nanorods synthesis on the lithium niobate su... more The new results of the single-crystalline zinc oxide nanorods synthesis on the lithium niobate substrate by the hydrothermal growth using zinc acetate as a precursor for both seed-layer and nanostructures array, are presented. The formed nanostructures could be applied as a sensing element for acoustic wave based sensors.
Mass sensitivity of nanostructure-enhanced SAW sensors on different substrate materials
It was shown that SAW sensor on the lithium niobate substrate with ZnO nanorods synthesized as th... more It was shown that SAW sensor on the lithium niobate substrate with ZnO nanorods synthesized as the sensing element demonstrated the sensitivity of 6.24·10-17 g/Hz to the mass loading while SAW sensor on the quartz substrate – 2.29·10-15 g/Hz due to higher square piezoelectric coupling coefficient of the first substrate.
A sensors kit for a versatile reconfigurable measuring platform
A new flexible, low-cost measuring platform, containing lightweight, small size and low-power int... more A new flexible, low-cost measuring platform, containing lightweight, small size and low-power intelligent ad-hoc sensors has been presented. By a sensor platform we mean one employed in monitoring changes in its surroundings. This network was designed for use in a number of different applications, including environmental, chemical, biological and climatic monitoring.
Sensors and Actuators A: Physical, 2015
The sensors of ultraviolet radiation consisted of apodized IDTs and RMSC. Zinc oxide nanorods w... more The sensors of ultraviolet radiation consisted of apodized IDTs and RMSC. Zinc oxide nanorods were used as UV-sensitive layer. The frequency shift was above 140 kHz for UV radiation of 46.52 µW/cm 2 (λ=365 nm). The recovery time of sensors was reduced at a gas-discharge plasma impact process.
SAW UV sensor based on ZnO and Al-doped ZnO nanorods
2015 IEEE 35th International Conference on Electronics and Nanotechnology (ELNANO), 2015
The original results of the development of ultraviolet sensor based on surface acoustic wave reso... more The original results of the development of ultraviolet sensor based on surface acoustic wave resonator with apodized interdigital transducers and reversing multistrip coupler were presented. ZnO nanorods or Al-doped nanorods grown by hydrothermal method were applied as sensing layer. The frequency shift for the modified with ZnO nanorods sensor was about 150 kHz while for the modified with Al-doped ZnO nanorods sensor the frequency shift was about 100 kHz. Both types of coating provided excellent selectivity for ultraviolet radiation. The ultraviolet sensor based on surface acoustic waves demonstrated good repeatability but complete recovery of the central frequency was about 60 min.
High-performance macromodel of the quarter-wavelength solidly mounted resonator
2015 IEEE 35th International Conference on Electronics and Nanotechnology (ELNANO), 2015
ABSTRACT This article discusses the recently developed performance-oriented macromodel of the sol... more ABSTRACT This article discusses the recently developed performance-oriented macromodel of the solidly mounted resonator and its advantages manifested in high-order piezoelectric filter design. The proposed model allows the straightforward integration of the thin film resonator's electrical behavior into the most of modern CAD systems as a part of complex RF circuit solutions and enables the precise evaluation of the output characteristics in a relatively wide near-resonant frequency range. It is shown further that an important feature of the model is its homogeneous multiloop structure which opens the possibility of fine complexity adjustment in order to obtain either high accuracy results or high performance during calculation. In addition, the model takes into account the influence of the most significant electro-acoustic effects related to the electrode mass loading and quarter-wavelength stack reflectance. Validation was performed on the example of PCS CDMA 3-stage ladder filter design and showed more than 15-fold improvement in calculation time in multi-objective optimization case.
Modified operational transconductance amplifier macromodel application in piezoelectric active filter design
ABSTRACT A modified macromodel of operational transconductance amplifier is proposed for applicat... more ABSTRACT A modified macromodel of operational transconductance amplifier is proposed for application in design of high-frequency bandpass active filters based on film bulk acoustic resonators. The presented solution is an optimal tradeoff according to the criteria of completeness of simulated characteristics, its accuracy and calculation time. Nonlinear amplification behavior of the macromodel is modelled by minimax Chebyshev approximation which allows the use of highorder polynomials and solves the convergence challenge. At the same time, bias-dependent noise model accounts for Johnson-Nyquist and flicker noise sources enabling the evaluation of active filter's signal-to-noise ratio, noise figure and output dynamic range. Finally, the differential active filter circuit was analyzed to validate the macromodel's capabilities, simulation ranges and filter characteristics.
Modern printing technologies in micro- and nanoelectronics
2013 IEEE XXXIII International Scientific Conference Electronics and Nanotechnology (ELNANO), 2013
ABSTRACT The trends in microminiaturization in printing are considered and some features of dispe... more ABSTRACT The trends in microminiaturization in printing are considered and some features of dispersed systems in nano sized scale as well as their applications discussed. Nanoparticles, nanostructures, nanocomposites are regarded as dispersed formations with unique properties due to quantum-sized and surface effects. The summary of photolithography in macro- and microelectronics is given, underlining the disadvantages of it in fabrication of electronic devices due to the light wavelength limits. The detailed analysis of nanotechnology in photography and printing is made, including micro- and nanocontact printing, or imprinting lithography, for what the short history of Graphic Arts development is overviewed as for applications of dispersed materials. Some perspectives of digital micro- and nanoprinting in nanoelectronics, nanophotonics, security printing, active and “intelligent” packaging are outlined, pointing out the importance of nanocomposites of metal oxides and halides for printed luminescent tags for smart food packaging. Nanosized ZnO was considered as a promising substance for printed application to active and “intelligent” packaging as well as nanophotonic devices. The experiments were carried out in order to determine the influence of the state of a packaged product on the properties of ZnO nanofilms. The results open the possibility to combine the properties of the films in development of devices for nanophotonics and smart packaging.
Электроника и связь, Jul 30, 2015
The simplified RLC model of Bragg reflector impedance was developed and presented in this work. T... more The simplified RLC model of Bragg reflector impedance was developed and presented in this work. The model allows the straightforward integration of the reflector's electrical behavior into the most of modern CAD systems as a part of complex devices and enables the precise evaluation of the output characteristics in a relatively wide nearresonant frequency range. This is especially important in the modelling of RF systems composed of thin film bulk acoustic resonators. The model verification was given including the analysis of the total impedance frequency dependence in wide and narrow frequency ranges, the model agreement examination for different number of layers and using various materials. The evaluation of agreement error for different frequency bands presented which allowed one to determine the limits of applicability of RLC model. An important advantage of proposed solution is the decreasing of calculation time and improving of optimization efficiency of complex RF circuits with a large number of resonators. References 10, figures 6, tables 2.
Microsystems, Electronics and Acoustics
Creation of high-sensitive sensor of mechanical vibrations, capable of non-distorted transformati... more Creation of high-sensitive sensor of mechanical vibrations, capable of non-distorted transformation of the vibrations source energy into electric signal within a wide dynamic range, is necessary for determination of characteristics of the source as well as for obtaining the information on parameters of medium in which the vibrations propagate. Fast and successful usage of obtained data can be achieved with employment of programming algorithms of identification of type of a source of vibrations and finding their fundamental Eigen frequencies and quality factors of the structures at these frequencies. Calculations of the schematic-and-technical decisions, selection of elements, making of mock-ups, and working-out of variants of the sensor. Mathematical modeling, analysis and identification of dynamical parameters of the structures in which there are used the fundamental eigenfrequencies and the structures’ quality factors at these frequencies. The Fourier and wavelet analyses of the s...
Theory and methods of e-learning, 2014
У зв’язку із загальною інформатизацією освіти і швидким розвитком цифрових засобів обробки інформ... more У зв’язку із загальною інформатизацією освіти і швидким розвитком цифрових засобів обробки інформації назріла необхідність впровадження в лабораторні практикуми вищих та середніх навчальних закладів цифрових засобів збору, обробки та оформлення експериментальних результатів, в тому числі під час виконання лабораторних робот з основ електротехнічних пристроїв та систем. При цьому надмірне захоплення віртуальними лабораторними роботами на основі комп’ютерного моделювання в порівнянні з реальним (натурним) експериментом може призводити до втрати особової орієнтації в технології освіти і відсутності надалі у випускників навчальних закладів ряду практичних навичок.У той же час світові компанії, що спеціалізуються в учбово-технічних засобах, переходять на випуск учбового устаткування, що узгоджується з комп’ютерною технікою: аналого-цифрових перетворювачів і датчиків фізико-хімічних величин, учбових приладів керованих цифро-аналоговими пристроями, автоматизованих учбово-експериментальних...