Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255609
V. Tsarev, A. Miroshnichenko, A. Gnusarev, N. A. Akafyeva
This article presents the simulation results of a double-gap photonic band gap resonator with striped fractal elements. In this resonator, a modified fractal “Sierpinski gasket” of three iterations was applied. Fractal elements “Sierpinski gasket” were made on a suspended dielectric substrate. The frequency spectrum of the resonator was investigated in the range from 10 to 40 GHz. The calculation of the main electrodynamic parameters of the resonator - resonant frequency, characteristic impedance, unloaded Qo factor - was made. The investigated resonator can find application in devices of the klystron type, which operate as amplifiers, generators, and frequency multipliers.
{"title":"Influence of Fractal Strip Elements Sierpinski Carpet on the Frequency Spectrum of a PBG Fractal Double-Gap Resonator","authors":"V. Tsarev, A. Miroshnichenko, A. Gnusarev, N. A. Akafyeva","doi":"10.1109/APEDE48864.2020.9255609","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255609","url":null,"abstract":"This article presents the simulation results of a double-gap photonic band gap resonator with striped fractal elements. In this resonator, a modified fractal “Sierpinski gasket” of three iterations was applied. Fractal elements “Sierpinski gasket” were made on a suspended dielectric substrate. The frequency spectrum of the resonator was investigated in the range from 10 to 40 GHz. The calculation of the main electrodynamic parameters of the resonator - resonant frequency, characteristic impedance, unloaded Qo factor - was made. The investigated resonator can find application in devices of the klystron type, which operate as amplifiers, generators, and frequency multipliers.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"22 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":"129793875","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/APEDE48864.2020.9255424
A. Grigoriev
The work considers quasi-optical simulation methods of millimeter-wavelength electromagnetic fields of 5G mobile telecommunication systems. Small wavelength of the field compared with the computational area dimensions makes such simulation methods as finite difference, finite elements, and method of moments ineffective. The quasi-optical methods, in particular, the ray-tracing method and the uniform theory of diffraction, are more efficient in this case. The theory elements of these methods are considered, and examples of their application to field calculation in closed rooms are given.
{"title":"Simulation of the Electromagnetic Field of 5G Mobile Telecommunication Systems by Quasi-Optical Methods","authors":"A. Grigoriev","doi":"10.1109/APEDE48864.2020.9255424","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255424","url":null,"abstract":"The work considers quasi-optical simulation methods of millimeter-wavelength electromagnetic fields of 5G mobile telecommunication systems. Small wavelength of the field compared with the computational area dimensions makes such simulation methods as finite difference, finite elements, and method of moments ineffective. The quasi-optical methods, in particular, the ray-tracing method and the uniform theory of diffraction, are more efficient in this case. The theory elements of these methods are considered, and examples of their application to field calculation in closed rooms are given.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"35 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":"132074530","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/APEDE48864.2020.9255589
A. Perov, D. Terin
This paper discusses promising designs for the heat sink of a laser diode array, which make it possible to controllably control the product life and provide the most uniform temperature aging of materials when it becomes necessary to increase the radiation power.
{"title":"Study of the Influence of a Constructive Solution on Heat Transfer in the Case of a Laser Diode Array","authors":"A. Perov, D. Terin","doi":"10.1109/APEDE48864.2020.9255589","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255589","url":null,"abstract":"This paper discusses promising designs for the heat sink of a laser diode array, which make it possible to controllably control the product life and provide the most uniform temperature aging of materials when it becomes necessary to increase the radiation power.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"32 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":"126987071","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/APEDE48864.2020.9255658
A. Emelyanov, Kirill Shumihin
This article discusses the possibility of using the piezoelectric quartz microweighting method to measure the rate of evaporation of the active substance from the surface of impregnated cathodes. The equation for calculating the mass of sprayed substance and the results of experiment are presented. Application of the developed method allows measuring the evaporation rate in a short time with high accuracy without preparing special layouts.
{"title":"Application of the Piezoelectric Quartz Microweighting Method to Control the Evaporation Rate of the Active Substance of Impregnated Cathodes","authors":"A. Emelyanov, Kirill Shumihin","doi":"10.1109/APEDE48864.2020.9255658","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255658","url":null,"abstract":"This article discusses the possibility of using the piezoelectric quartz microweighting method to measure the rate of evaporation of the active substance from the surface of impregnated cathodes. The equation for calculating the mass of sprayed substance and the results of experiment are presented. Application of the developed method allows measuring the evaporation rate in a short time with high accuracy without preparing special layouts.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"51 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":"130226969","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/APEDE48864.2020.9255602
Sergei F. Atkishkin
This paper demonstrates application of nonlinear large signal scattering parameters (LSSP) to the microwave nonlinear behavioral modeling on the example of two nonlinear amplifiers cascade connection. It is shown that nonlinear LSSP provides capabilities to accurately modeling the fundamental output power, gain compression and less accurately the second harmonic output power.
{"title":"Microwave Behavioral Modeling with Nonlinear Large Signal Scattering Parameters","authors":"Sergei F. Atkishkin","doi":"10.1109/APEDE48864.2020.9255602","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255602","url":null,"abstract":"This paper demonstrates application of nonlinear large signal scattering parameters (LSSP) to the microwave nonlinear behavioral modeling on the example of two nonlinear amplifiers cascade connection. It is shown that nonlinear LSSP provides capabilities to accurately modeling the fundamental output power, gain compression and less accurately the second harmonic output power.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"11 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":"130631427","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/APEDE48864.2020.9255619
S. Krutiev, V. Zemlyakov, D. Lonkina
The problem of electrodynamic analysis and synthesis of band-pass waveguide filters on thin resonant metal diaphragms with a complex aperture is solved. A complex aperture is a combination of complementary split ring resonators (CSRRs) and a Koch fractal. The calculation of cutoff wave numbers and the components of electromagnetic fields expressions for have been carried out by the partial regions method, taking into account the features of the electromagnetic field on metal ridges. The results of computer simulation and experimental verification for a three-cavity band pass filter on a rectangular waveguide WR-137 are presented.
{"title":"Electrodynamic Analysis of a Band-Pass Waveguide Filter on Thin Metal Complex Resonant Diaphragms","authors":"S. Krutiev, V. Zemlyakov, D. Lonkina","doi":"10.1109/APEDE48864.2020.9255619","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255619","url":null,"abstract":"The problem of electrodynamic analysis and synthesis of band-pass waveguide filters on thin resonant metal diaphragms with a complex aperture is solved. A complex aperture is a combination of complementary split ring resonators (CSRRs) and a Koch fractal. The calculation of cutoff wave numbers and the components of electromagnetic fields expressions for have been carried out by the partial regions method, taking into account the features of the electromagnetic field on metal ridges. The results of computer simulation and experimental verification for a three-cavity band pass filter on a rectangular waveguide WR-137 are presented.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"79 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":"130737241","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/APEDE48864.2020.9255579
K. Zeyde, M. Ronkin, D. Hong
This paper provides a brief description of an alternative method for the direct electrodynamics problems solving. The method is being developed for its application in subsurface radiolocation and flaw detection, primarily. One of the main features of the approach is it possible application to solving the direct problem of several bodies, boundary irregularities accounting and complex-dielectric media consideration. The basis of our approach is the principle of electrodynamic equivalence of a radiating and scattering body. This method may be used, as when considering heterogeneity, as well for the buried source detection.
{"title":"An Alternative Approach to the Direct Scattering Problems in Presence of Electrically Small Bodies","authors":"K. Zeyde, M. Ronkin, D. Hong","doi":"10.1109/APEDE48864.2020.9255579","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255579","url":null,"abstract":"This paper provides a brief description of an alternative method for the direct electrodynamics problems solving. The method is being developed for its application in subsurface radiolocation and flaw detection, primarily. One of the main features of the approach is it possible application to solving the direct problem of several bodies, boundary irregularities accounting and complex-dielectric media consideration. The basis of our approach is the principle of electrodynamic equivalence of a radiating and scattering body. This method may be used, as when considering heterogeneity, as well for the buried source detection.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"7 3 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":"130817964","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/APEDE48864.2020.9255525
L. Hung
The paper describes the miniaturization process of a coupler in marine communication systems implemented in a single layer. A comparison of the parameters of a conventional and compact coupler is given. The miniaturization of the coupler became possible due to the use of artificial transmission lines having a shorter length than quarter-wave segments. The area of the received coupler was 73.5% less than the area of the coupler in the traditional version.
{"title":"Maritime Communications Uses Directional Coupler Topology Based on Artificial Transmission Lines","authors":"L. Hung","doi":"10.1109/APEDE48864.2020.9255525","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255525","url":null,"abstract":"The paper describes the miniaturization process of a coupler in marine communication systems implemented in a single layer. A comparison of the parameters of a conventional and compact coupler is given. The miniaturization of the coupler became possible due to the use of artificial transmission lines having a shorter length than quarter-wave segments. The area of the received coupler was 73.5% less than the area of the coupler in the traditional version.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"44 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":"125963216","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/APEDE48864.2020.9255558
A. Michail, T. Krachkovskaya, P. Shalaev
The results of experimental studies of the metal-porous cathode modified by carbon nanostructures Astralen® and Ugleron® are presented. Long-term reliability tests of space-based TWTs with such a cathode in forced mode showed that the proposed design and manufacturing technology of metal-porous cathodes can increase their operating time in the TWT without loss of emissivity up to 3.106 hours. During the test, the difference between the operating and characteristic voltages the cathode decreased by 67% and did not reach a critical value, while the change in the value of the cathode current in the TWT did not exceed 5%.
{"title":"Life Test Performance of Nanocarbon-Modified Metal-Porous Cathode in the Traveling Wave Tube","authors":"A. Michail, T. Krachkovskaya, P. Shalaev","doi":"10.1109/APEDE48864.2020.9255558","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255558","url":null,"abstract":"The results of experimental studies of the metal-porous cathode modified by carbon nanostructures Astralen® and Ugleron® are presented. Long-term reliability tests of space-based TWTs with such a cathode in forced mode showed that the proposed design and manufacturing technology of metal-porous cathodes can increase their operating time in the TWT without loss of emissivity up to 3.106 hours. During the test, the difference between the operating and characteristic voltages the cathode decreased by 67% and did not reach a critical value, while the change in the value of the cathode current in the TWT did not exceed 5%.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"4 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":"130031792","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/APEDE48864.2020.9255587
A. Yelizarov, I. Nazarov, A. Skuridin, E. Zakirova
A study of waveguide structures with magnetic walls that were based on mushroom-shaped metamaterials has been carried out. We used Ansoft HFSS to simulate waveguide filters with a forbidden frequency band. The results obtained showed that a magnetic wall made of periodic various sized unit cells can provide several forbidden frequency bands instead of only one in case of single sized elements. We also demonstrated that it is possible to control rejection bands of frequency-selective surfaces by varying the permeability of ferrite coating of the metamaterial.
{"title":"Waveguide Structures with Magnetic Walls on the Basis of the Mushroom-shaped Metamaterials","authors":"A. Yelizarov, I. Nazarov, A. Skuridin, E. Zakirova","doi":"10.1109/APEDE48864.2020.9255587","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255587","url":null,"abstract":"A study of waveguide structures with magnetic walls that were based on mushroom-shaped metamaterials has been carried out. We used Ansoft HFSS to simulate waveguide filters with a forbidden frequency band. The results obtained showed that a magnetic wall made of periodic various sized unit cells can provide several forbidden frequency bands instead of only one in case of single sized elements. We also demonstrated that it is possible to control rejection bands of frequency-selective surfaces by varying the permeability of ferrite coating of the metamaterial.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"144 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":"122685287","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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