Pub Date : 2020-09-24DOI: 10.1109/APEDE48864.2020.9255653
N. K. Khiem, L. Hung
The paper describes the possibility of miniaturization of a directional coupler using artificial transmission lines. Using an example of a broadband coupler with an operating frequency of 1 GHz, it is shown that using such lines it was possible to reduce the device area by 70%. Compact couplers can be used in a variety of microwave applications in marine communication at sea.
{"title":"Design of Reduced Broadband Power Divider in Marine Communication Systems","authors":"N. K. Khiem, L. Hung","doi":"10.1109/APEDE48864.2020.9255653","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255653","url":null,"abstract":"The paper describes the possibility of miniaturization of a directional coupler using artificial transmission lines. Using an example of a broadband coupler with an operating frequency of 1 GHz, it is shown that using such lines it was possible to reduce the device area by 70%. Compact couplers can be used in a variety of microwave applications in marine communication at sea.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"370 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":"124635808","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/APEDE48864.2020.9255620
O. Belobrovaya, V. Galushka, V. Polyanskaya, V. Sidorov, D. Terin, A. Mashkov
The results of a study of the optical properties of porous silicon nanostructures obtained by metal-assisted chemical etching of γ-quanta irradiated with low doses during their formation are discussed. The total reflection from the obtained samples depends not only on the irradiation dose of the forming layer, but also on the dose of preliminary irradiation of the initial silicon wafer by in situ control. By studying the Raman spectra of the samples, it was confirmed that changes in the spectra take place both due to the effect of small doses of γ-quanta on the initial silicon wafers and due to the in situ effect of gamma radiation on the forming SiNWs. We observed a shift in the wavelength of the photoluminescence maximum from 600 nm to 750 nm with a change in the irradiation of the initial silicon wafer from 0 to 40 kR at the same dose of irradiation of the forming porous layer.
{"title":"Optical Properties of Silicon Nanowhiskers Obtained by Metal-Assisted Chemical Etching under Gamma Irradiation","authors":"O. Belobrovaya, V. Galushka, V. Polyanskaya, V. Sidorov, D. Terin, A. Mashkov","doi":"10.1109/APEDE48864.2020.9255620","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255620","url":null,"abstract":"The results of a study of the optical properties of porous silicon nanostructures obtained by metal-assisted chemical etching of γ-quanta irradiated with low doses during their formation are discussed. The total reflection from the obtained samples depends not only on the irradiation dose of the forming layer, but also on the dose of preliminary irradiation of the initial silicon wafer by in situ control. By studying the Raman spectra of the samples, it was confirmed that changes in the spectra take place both due to the effect of small doses of γ-quanta on the initial silicon wafers and due to the in situ effect of gamma radiation on the forming SiNWs. We observed a shift in the wavelength of the photoluminescence maximum from 600 nm to 750 nm with a change in the irradiation of the initial silicon wafer from 0 to 40 kR at the same dose of irradiation of the forming porous layer.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"56 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":"126603502","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/APEDE48864.2020.9255548
A. V. Galdetsky, M. S. Vostrov, N. Golovanov, Ilya Romanovich Donchenko, Svetlana Vasilyevna Vahlamova
The technique of optimization of W-band klystron multi-gap resonators is considered. Their electrodynamics properties are investigated. Design and measured characteristics of a W-band four-resonator distributed interaction klystron are presented. Output power of klystron prototype achieves 400 W at the klystron operating 3dB-bandwidth near 200 MHz.
{"title":"Development and Investigation of W-Band Extended Interaction Klystron","authors":"A. V. Galdetsky, M. S. Vostrov, N. Golovanov, Ilya Romanovich Donchenko, Svetlana Vasilyevna Vahlamova","doi":"10.1109/APEDE48864.2020.9255548","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255548","url":null,"abstract":"The technique of optimization of W-band klystron multi-gap resonators is considered. Their electrodynamics properties are investigated. Design and measured characteristics of a W-band four-resonator distributed interaction klystron are presented. Output power of klystron prototype achieves 400 W at the klystron operating 3dB-bandwidth near 200 MHz.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"49 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":"124085237","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/APEDE48864.2020.9255411
Sergei F. Atkishkin
This paper presents conversion rules between large signal nonlinear scattering (LSSP) and transfer parameters for linear two-ports. Conversion rules are derived and confirmed through comparing responses of harmonic balance simulation and Matlab numerical simulation.
{"title":"Conversion Rules Between Nonlinear Large Signal S-parameters and T-parameters for Linear Two-Port Network","authors":"Sergei F. Atkishkin","doi":"10.1109/APEDE48864.2020.9255411","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255411","url":null,"abstract":"This paper presents conversion rules between large signal nonlinear scattering (LSSP) and transfer parameters for linear two-ports. Conversion rules are derived and confirmed through comparing responses of harmonic balance simulation and Matlab numerical simulation.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"25 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":"122109634","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/APEDE48864.2020.9255608
V. Tsarev, A. Miroshnichenko, A. Gnusarev, N. A. Akafyeva, M. Chernyshev
The article presents the results of a study of a new type of resonator for small-sized klystron-type devices operating in the Ku- and K-bands of the frequency spectrum of the microwave range. A feature of the resonator design is the use of a photonic crystal structure and fractals “Sierpinski's Triangle”. Fractal elements “Sierpinski Triangle” was made on a suspended ceramic substrate. The main frequency modes of oscillations were investigated - anti-phase and in-phase type of oscillations. The possibility of tuning the resonator to multiple resonant frequencies was examined. The effect of the change in the dielectric constant of the substrate on the frequency spectrum of the resonator was investigated also.
{"title":"Calculation of Electrodynamic Parameters of Photonic Crystal Resonator for Low-Voltage Multi-Beam Klystrons","authors":"V. Tsarev, A. Miroshnichenko, A. Gnusarev, N. A. Akafyeva, M. Chernyshev","doi":"10.1109/APEDE48864.2020.9255608","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255608","url":null,"abstract":"The article presents the results of a study of a new type of resonator for small-sized klystron-type devices operating in the Ku- and K-bands of the frequency spectrum of the microwave range. A feature of the resonator design is the use of a photonic crystal structure and fractals “Sierpinski's Triangle”. Fractal elements “Sierpinski Triangle” was made on a suspended ceramic substrate. The main frequency modes of oscillations were investigated - anti-phase and in-phase type of oscillations. The possibility of tuning the resonator to multiple resonant frequencies was examined. The effect of the change in the dielectric constant of the substrate on the frequency spectrum of the resonator was investigated also.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"6 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":"115640793","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/APEDE48864.2020.9255591
V. I. Rogovin, I. Simonova
This investigation aimed to find a compromise between enough heat dissipation, high interactive impedance and low RF loss. Several constructions of helix slow-wave structure (SWS) with different dielectric rods shapes (i.e., rectangular, wedge, T-shaped, and stairs) are analyzed in this paper. The use of the promising SWS construction with stairs-shaped dielectric rods allowed to obtain 47% increase in interactive impedance value compared to the initial SWS with rectangular BeO rods. Scrutiny of two rods materials (beryllium oxide and boron nitride) revealed that use of the latter one and three times reduction of rods width lead to 94 % increase in interactive impedance value compared to the first calculated SWS with thick BeO rods. Conducted wire geometry optimization provided minimum level of RF loss and sufficient heat dissipation. Calculations of interactive space construction confirmed the benefit of using SWS construction with BN rods: 6 – 8% increase in output power was obtained within operating range.
{"title":"Investigation of Rods Shapes and Materials Influence on Q-Band Travelling Wave Tube High Frequency Characteristics","authors":"V. I. Rogovin, I. Simonova","doi":"10.1109/APEDE48864.2020.9255591","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255591","url":null,"abstract":"This investigation aimed to find a compromise between enough heat dissipation, high interactive impedance and low RF loss. Several constructions of helix slow-wave structure (SWS) with different dielectric rods shapes (i.e., rectangular, wedge, T-shaped, and stairs) are analyzed in this paper. The use of the promising SWS construction with stairs-shaped dielectric rods allowed to obtain 47% increase in interactive impedance value compared to the initial SWS with rectangular BeO rods. Scrutiny of two rods materials (beryllium oxide and boron nitride) revealed that use of the latter one and three times reduction of rods width lead to 94 % increase in interactive impedance value compared to the first calculated SWS with thick BeO rods. Conducted wire geometry optimization provided minimum level of RF loss and sufficient heat dissipation. Calculations of interactive space construction confirmed the benefit of using SWS construction with BN rods: 6 – 8% increase in output power was obtained within operating range.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"199 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":"124471324","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/APEDE48864.2020.9255582
P. Shalaev
The technical substantiation of the effectiveness of the application of the method linearization characteristics of TWT using an additional input signal is given. A TWT design with an energy recuperator of an additional input signal is proposed. The proposed design allows you to increase the efficiency of TWT in operation with high linearity of its characteristics. A 3D model of an implementation option for TWT construction is presented.
{"title":"Traveling Wave Tube with Energy Recovery of an Additional Microwave Signal","authors":"P. Shalaev","doi":"10.1109/APEDE48864.2020.9255582","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255582","url":null,"abstract":"The technical substantiation of the effectiveness of the application of the method linearization characteristics of TWT using an additional input signal is given. A TWT design with an energy recuperator of an additional input signal is proposed. The proposed design allows you to increase the efficiency of TWT in operation with high linearity of its characteristics. A 3D model of an implementation option for TWT construction is presented.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"31 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":"129146695","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/APEDE48864.2020.9255584
E. Khabitueva, V. M. Malyshev, A. Nikitin
This article discusses the main results of a phase noise measurement of the microwave voltage-controlled oscillator (VCO) with a linearized wideband tuning characteristic. In the experiments the characteristics of VCO, tuned in bandwidth of 6 to 12 GHz, with an active diode converter connected to the control input of the oscillator were investigated. The control voltage converter is implemented on a low-noise amplifier and five Schottky diodes HSMS-281x. The article shows the possibility of reducing the tuning nonlinearity coefficient more than 2.8 times. VCO's measured phase noise is not more than −90 … −92 dBc/Hz at 100 kHz frequency offset.
{"title":"Phase Noise Measurement of the Microwave VCO with Linearized Wideband Tuning Characteristic","authors":"E. Khabitueva, V. M. Malyshev, A. Nikitin","doi":"10.1109/APEDE48864.2020.9255584","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255584","url":null,"abstract":"This article discusses the main results of a phase noise measurement of the microwave voltage-controlled oscillator (VCO) with a linearized wideband tuning characteristic. In the experiments the characteristics of VCO, tuned in bandwidth of 6 to 12 GHz, with an active diode converter connected to the control input of the oscillator were investigated. The control voltage converter is implemented on a low-noise amplifier and five Schottky diodes HSMS-281x. The article shows the possibility of reducing the tuning nonlinearity coefficient more than 2.8 times. VCO's measured phase noise is not more than −90 … −92 dBc/Hz at 100 kHz frequency offset.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"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":"127771531","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/APEDE48864.2020.9255526
S. Morev, D. Komarov, E. Muraviev, Victor Sablin, Dmitry Danilov
A technique is proposed and the distribution structure of the longitudinal component of the magnetic field induction in the magnetic focusing system of a high-power multibeam klystron is found, which allows the electron beam to be transported with minimal losses in the drift tube, taking into account changes in the beam velocity in the gaps of the resonator electrodynamic system.
{"title":"Estimation of the Focusing Magnetic Field in High-power Multibeam Klystrons with Electron Beam Dynamic Defocusing Factor","authors":"S. Morev, D. Komarov, E. Muraviev, Victor Sablin, Dmitry Danilov","doi":"10.1109/APEDE48864.2020.9255526","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255526","url":null,"abstract":"A technique is proposed and the distribution structure of the longitudinal component of the magnetic field induction in the magnetic focusing system of a high-power multibeam klystron is found, which allows the electron beam to be transported with minimal losses in the drift tube, taking into account changes in the beam velocity in the gaps of the resonator electrodynamic system.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"64 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":"127860970","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/APEDE48864.2020.9255537
I. Malygin, V. Ivanov
Weather radiosondes have been used to study the atmosphere for over 80 years. Data on temperature, humidity, atmospheric pressure, and some other parameters from the corresponding sensors is transmitted by the radiosonde to the ground station via radio channel. Since the advent of the first radiosondes, the situation with electromagnetic compatibility has deteriorated significantly due to the emergence of a large number of electronic equipment, both individual and military-industrial. Cellular communications, broadband access systems operating in close frequency ranges have appeared and are rapidly developing. The number of small spacecraft is constantly growing, some of whose radio channels can affect the signals of meteorological radiosondes. Powerful signals from GSM-1800 base stations can affect the receiving channel of ground-based meteorological systems. The article is devoted to the analysis of the mutual influence of modern sources and receivers of radio signals for various purposes and meteorological radiosondes, as well. In addition, solutions have been proposed and calculated to minimize such influences and improve electromagnetic compatibility for meteorological systems.
{"title":"The Study of Electromagnetic Compatibility of Meteorological Radiosondes","authors":"I. Malygin, V. Ivanov","doi":"10.1109/APEDE48864.2020.9255537","DOIUrl":"https://doi.org/10.1109/APEDE48864.2020.9255537","url":null,"abstract":"Weather radiosondes have been used to study the atmosphere for over 80 years. Data on temperature, humidity, atmospheric pressure, and some other parameters from the corresponding sensors is transmitted by the radiosonde to the ground station via radio channel. Since the advent of the first radiosondes, the situation with electromagnetic compatibility has deteriorated significantly due to the emergence of a large number of electronic equipment, both individual and military-industrial. Cellular communications, broadband access systems operating in close frequency ranges have appeared and are rapidly developing. The number of small spacecraft is constantly growing, some of whose radio channels can affect the signals of meteorological radiosondes. Powerful signals from GSM-1800 base stations can affect the receiving channel of ground-based meteorological systems. The article is devoted to the analysis of the mutual influence of modern sources and receivers of radio signals for various purposes and meteorological radiosondes, as well. In addition, solutions have been proposed and calculated to minimize such influences and improve electromagnetic compatibility for meteorological systems.","PeriodicalId":277559,"journal":{"name":"2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)","volume":"13 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":"121419660","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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