Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255489
A. Adilova, N. Ryskin
In this paper, the mutual synchronization of a system of two delay-coupled oscillators with hard excitation is considered. The results of the bifurcation analysis in the case of small delay time are presented. Stability of the synchronous states to variation of different parameters is examined. The domains of synchronization on the frequency mismatch - coupling strength parameter plane are plotted.
{"title":"Study of Synchronization of Delay-Coupled Oscillators with Hard Excitation","authors":"A. Adilova, N. Ryskin","doi":"10.1109/APEDE48864.2020.9255489","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255489","url":null,"abstract":"In this paper, the mutual synchronization of a system of two delay-coupled oscillators with hard excitation is considered. The results of the bifurcation analysis in the case of small delay time are presented. Stability of the synchronous states to variation of different parameters is examined. The domains of synchronization on the frequency mismatch - coupling strength parameter plane are plotted.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131620335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255541
Sergei F. Atkishkin
This paper demonstrates 3D slabline and stripline microwave delay lines on the flexible polymer substrate. The theory of operation and the construction of the delay lines are discussed. Group delay time deviation reasons are revealed. Experimental results for three microwave delay lines on the polypropylene and the polyvinyl chloride substrates are presented.
{"title":"Flexible 3D Slabline and Stripline Microwave Delay Lines on Polymer Substrate","authors":"Sergei F. Atkishkin","doi":"10.1109/APEDE48864.2020.9255541","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255541","url":null,"abstract":"This paper demonstrates 3D slabline and stripline microwave delay lines on the flexible polymer substrate. The theory of operation and the construction of the delay lines are discussed. Group delay time deviation reasons are revealed. Experimental results for three microwave delay lines on the polypropylene and the polyvinyl chloride substrates are presented.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124820726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255413
I. Frolov, O. Radaev, V. Sergeev
It is known that defects of InGaN/GaN LED heterostructure lead to a decrease of the slope of the light output power-current (P-I) characteristic of the LED. This is especially pronounced in microcurrent mode. An automated installation has been developed for measuring of the slope of the P-I characteristic of the LED in the current range of 5 µA … 3 mA. An example of a sample of green commercial LEDs shows the presence of a high correlation between the slope of the P-I characteristic and the defects density in the heterostructure of the LED. The measuring installation can be used in the system of quality control of LEDs.
{"title":"Installation for Measuring of the Slope of the P-I Characteristic of the LED in the Range of the Electroluminescence Start Currents","authors":"I. Frolov, O. Radaev, V. Sergeev","doi":"10.1109/APEDE48864.2020.9255413","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255413","url":null,"abstract":"It is known that defects of InGaN/GaN LED heterostructure lead to a decrease of the slope of the light output power-current (P-I) characteristic of the LED. This is especially pronounced in microcurrent mode. An automated installation has been developed for measuring of the slope of the P-I characteristic of the LED in the current range of 5 µA … 3 mA. An example of a sample of green commercial LEDs shows the presence of a high correlation between the slope of the P-I characteristic and the defects density in the heterostructure of the LED. The measuring installation can be used in the system of quality control of LEDs.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122574631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255595
N. Pristupchik
We discuss the advantages of domain specific computer aid engineering (CAE) systems, which have to be machine-consuming, rather than human-consuming, and be able to operate at future supercomputers. We reveal some quirks of modern human-consuming commercial CAEs, and their limitations. Next, we have described the main benefits and shortcomings of the open-source software development model (from the developers' perspective), which as we think suits our needs best. We have briefly overviewed some modern software technologies, on top of which any advanced CAE could be built. Most of them are open-sourced. In addition, we justify using Matlab technical computing language for prototyping domain specific CAE systems. In conclusion, we present a prototype of a 2D preprocessor with direct editing capabilities for domain-specific CAE for electron beam optics design.
{"title":"Open-Source CAE for Electron Beam Optics Design: Challenges and Opportunities","authors":"N. Pristupchik","doi":"10.1109/APEDE48864.2020.9255595","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255595","url":null,"abstract":"We discuss the advantages of domain specific computer aid engineering (CAE) systems, which have to be machine-consuming, rather than human-consuming, and be able to operate at future supercomputers. We reveal some quirks of modern human-consuming commercial CAEs, and their limitations. Next, we have described the main benefits and shortcomings of the open-source software development model (from the developers' perspective), which as we think suits our needs best. We have briefly overviewed some modern software technologies, on top of which any advanced CAE could be built. Most of them are open-sourced. In addition, we justify using Matlab technical computing language for prototyping domain specific CAE systems. In conclusion, we present a prototype of a 2D preprocessor with direct editing capabilities for domain-specific CAE for electron beam optics design.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125089485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255574
H. Z. Htet, G. S. Mytsyk
The structural-algorithmic synthesis (SAS) of single-phase voltage source inverter (SPVSI) with pulse-width modulation (PWM) in this area of application is determined for the solar power system with small distortion level of output voltage. To solve this problem in this paper consider the possibility as the SAS of using the principle of multi-channel conversion (MCC) of the energy flow. At that each of the M channels uses single-phase voltage source inverter (SPVSI) with pulse-width modulation (PWM) of the output voltage. Today they are often referred to as multichannel SPVSI. When all channels are fed from a common power supply source, the outputs of the M channels are connected in parallel through transfilters, which sum up the currents of the channels and partially perform the function of voltage filtering. This concept is characterized by significantly smaller difference in neighboring quantization levels both in the output voltages of SPVSIs and the resulting output voltage of SPVSIs with MCC. Feature of multichannel conversion by PWM in these solutions is the use of voltage levels optimized for minimum total harmonic distortion (THD) of output voltage and as well as modified solutions of transfilters. This reduces the installed capacity of the equipments. The results and recommendations obtained in the basis of computer simulation are presented for their comparative assessment and design.
{"title":"Structural-Algorithmic Synthesis of Single Phase Voltage Source Inverter with Pulse-Width Modulation for Solar Power System","authors":"H. Z. Htet, G. S. Mytsyk","doi":"10.1109/APEDE48864.2020.9255574","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255574","url":null,"abstract":"The structural-algorithmic synthesis (SAS) of single-phase voltage source inverter (SPVSI) with pulse-width modulation (PWM) in this area of application is determined for the solar power system with small distortion level of output voltage. To solve this problem in this paper consider the possibility as the SAS of using the principle of multi-channel conversion (MCC) of the energy flow. At that each of the M channels uses single-phase voltage source inverter (SPVSI) with pulse-width modulation (PWM) of the output voltage. Today they are often referred to as multichannel SPVSI. When all channels are fed from a common power supply source, the outputs of the M channels are connected in parallel through transfilters, which sum up the currents of the channels and partially perform the function of voltage filtering. This concept is characterized by significantly smaller difference in neighboring quantization levels both in the output voltages of SPVSIs and the resulting output voltage of SPVSIs with MCC. Feature of multichannel conversion by PWM in these solutions is the use of voltage levels optimized for minimum total harmonic distortion (THD) of output voltage and as well as modified solutions of transfilters. This reduces the installed capacity of the equipments. The results and recommendations obtained in the basis of computer simulation are presented for their comparative assessment and design.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125217941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255490
G. Akhobadze
This report proposes a method for de-icing highvoltage electrical wires that involves exciting electromagnetic surface waves in the power line wires. It considers the issues of electromagnetic energy absorption in the controlled medium and its further conversion into heat. The report further analyzes how electromagnetic waves pass through the air-ice and the ice-conductor interfaces. The analysis covers the reflection and refraction of electromagnetic waves as affected by the electrophysical properties of air and ice, as well as by the orientation of the angles of incidence and refraction. The dielectric-conductor model is used to refine the equation that links the power carried by an electromagnetic wave to the wave properties of electromagnetic fields.
{"title":"De-Icing Power Transmission Wires","authors":"G. Akhobadze","doi":"10.1109/APEDE48864.2020.9255490","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255490","url":null,"abstract":"This report proposes a method for de-icing highvoltage electrical wires that involves exciting electromagnetic surface waves in the power line wires. It considers the issues of electromagnetic energy absorption in the controlled medium and its further conversion into heat. The report further analyzes how electromagnetic waves pass through the air-ice and the ice-conductor interfaces. The analysis covers the reflection and refraction of electromagnetic waves as affected by the electrophysical properties of air and ice, as well as by the orientation of the angles of incidence and refraction. The dielectric-conductor model is used to refine the equation that links the power carried by an electromagnetic wave to the wave properties of electromagnetic fields.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117258052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255560
S. Korchagin, Y. Klinaev, D. Terin, S. Romanchuk
In this work, we solve the problem of predicting the dielectric constant of silicon-based nanocomposites using machine learning methods. Mathematical models and programs have been developed to predict the electrophysical properties of new materials, as well as to select the optimal composition. The results obtained will be useful for faster and cheaper creation of new functional composites.
{"title":"Modeling the Dielectric Constant of Silicon-Based Nanocomposites Using Machine Learning","authors":"S. Korchagin, Y. Klinaev, D. Terin, S. Romanchuk","doi":"10.1109/APEDE48864.2020.9255560","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255560","url":null,"abstract":"In this work, we solve the problem of predicting the dielectric constant of silicon-based nanocomposites using machine learning methods. Mathematical models and programs have been developed to predict the electrophysical properties of new materials, as well as to select the optimal composition. The results obtained will be useful for faster and cheaper creation of new functional composites.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115254040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255616
A. Cherevko, Y. Morgachev
The parameter characterizing the applicability of flexible graphene antennas is determined. The relationship of this parameter with the resistance of the graphene antenna material to direct current is obtained. The analysis was carried out on the basis of an experiment, computer modeling and monitoring of literature data.
{"title":"Critical Bending Radius of Flexible Eco-Friendly Graphene Antennas","authors":"A. Cherevko, Y. Morgachev","doi":"10.1109/APEDE48864.2020.9255616","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255616","url":null,"abstract":"The parameter characterizing the applicability of flexible graphene antennas is determined. The relationship of this parameter with the resistance of the graphene antenna material to direct current is obtained. The analysis was carried out on the basis of an experiment, computer modeling and monitoring of literature data.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"7 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131693971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255503
M. Sedankin, I. Nelin, V. Leushin, V. Skuratov, L. Mershin, S. Vesnin
The characteristics of modern medical radiometers and the types of antennas used in them are considered. The method of accounting for the contribution of individual layers of the multilayer structure of a biological object to the measured brightness temperature is described. A system of rational parameters of antennas used in microwave radiometry has been developed. The paper presents a method for computational modeling of the design parameters of three waveguide antennas of various sizes using the finite-difference time domain (FDTD) method. A set of rational parameters has been developed that confirm the performance of these functions and provide the possibility of optimizing the antenna design when designing multichannel multifrequency medical radiometers.
{"title":"System of Rational Parameters of Antennas for Designing a Multi-channel Multi-frequency Medical Radiometer","authors":"M. Sedankin, I. Nelin, V. Leushin, V. Skuratov, L. Mershin, S. Vesnin","doi":"10.1109/APEDE48864.2020.9255503","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255503","url":null,"abstract":"The characteristics of modern medical radiometers and the types of antennas used in them are considered. The method of accounting for the contribution of individual layers of the multilayer structure of a biological object to the measured brightness temperature is described. A system of rational parameters of antennas used in microwave radiometry has been developed. The paper presents a method for computational modeling of the design parameters of three waveguide antennas of various sizes using the finite-difference time domain (FDTD) method. A set of rational parameters has been developed that confirm the performance of these functions and provide the possibility of optimizing the antenna design when designing multichannel multifrequency medical radiometers.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134073149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255648
V. Baiburin, Artem M. Kolomin, A. Rozov, N. Khorovodova
Devices with crossed electric and magnetic fields are widely used. In M - type devices, the potential energy of electrons passes into the energy of the microwave field, and the presence of a magnetic field is fundamentally important for the energy exchange process. The kinetic energy of electrons does not change on average over the period of RF oscillations. In this paper, we consider the case of how an electronic trajectory will change in a non-uniform magnetic field with different amplitudes of the variable component of magnetic induction. It is shown that when the amplitude of the variable component of magnetic induction increases, there is a slight decrease in efficiency, which is associated with an increase in losses for the skin effect and electron bombardment of the anode and cathode.
{"title":"Influence of Variable Magnetic Induction Amplitude Value on Parametric Generation in Crossed Fields","authors":"V. Baiburin, Artem M. Kolomin, A. Rozov, N. Khorovodova","doi":"10.1109/APEDE48864.2020.9255648","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255648","url":null,"abstract":"Devices with crossed electric and magnetic fields are widely used. In M - type devices, the potential energy of electrons passes into the energy of the microwave field, and the presence of a magnetic field is fundamentally important for the energy exchange process. The kinetic energy of electrons does not change on average over the period of RF oscillations. In this paper, we consider the case of how an electronic trajectory will change in a non-uniform magnetic field with different amplitudes of the variable component of magnetic induction. It is shown that when the amplitude of the variable component of magnetic induction increases, there is a slight decrease in efficiency, which is associated with an increase in losses for the skin effect and electron bombardment of the anode and cathode.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125230133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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