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Вид документа : Однотомное издание
Шифр издания : Гос. рег. прогр. для ЭВМ 2021680774!-602855630
Автор(ы) : Афонин, Алексей Олегович, Волошин, Александр Сергеевич, Говорун, Илья Валерьевич, Подшивалов, Иван Валерьевич, Угрюмов, Андрей Витальевич
Заглавие : .-
Коллективы : Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук", Федеральная служба по интеллектуальной собственности (Роспатент), Федеральный институт промышленной собственности
Место публикации : Программы для ЭВМ. Базы данных. Топологии интегральных микросхем: офиц. бюл. Фед. службы по интеллектуал. собственности (Роспатент). - 2021. - № 12
Аннотация: Программа предназначена для исследования второй гармоники в умножителе частот на основе микрополоскового резонатора с тонкой магнитной пленкой. Входными данными программы является значение мощности, подаваемой на вход умножителя, значение мощности с выхода умножителя, значение отраженной от умножителя мощности, величина и угол приложения постоянного магнитного поля; результат – уровень выходной мощности умножителя на удвоенной частоте входного сигнала как функция от значения постоянного магнитного поля и угла его приложения относительно оси легкого намагничивания тонкой магнитной пленки. Тип ЭВМ: IBM PC – совмест. ПК; ОС: Windows 7/8/10.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Govorun I. V., Belyaev B. A., Zav'yalov Ya. B., Shumilov T. Y., Afonin A. O., Ugryumov A. V., Galeev R. G.
Заглавие : A 10 GHz monolithic filter based on stripline resonators with a split conductor
Колич.характеристики :6 с
Место публикации : Dokl. Phys. - 2023. - Vol. 68, Is. 12. - P.434-439. - ISSN 10283358 (ISSN), DOI 10.1134/S1028335823120030. - ISSN 15626903 (eISSN)
Примечания : Cited References: 18. - This work was carried out within the framework of Agreement no. 470 of August 30, 2022, between the Institute of Physics, Siberian Branch, Russian Academy of Sciences; the Regional Science Foundation; and JSC NPP Radiosvyaz, for a competition of scientific, technical, and innovative projects in the interests of the first climate Scientific and Educational Center "Yenisei Siberia"
Аннотация: The monolithic design of a compact bandpass filter X-band is made on the technology of multilayered printed circuit boards. Quarter-wave stripline resonators of the filter have two conductors divided by a layer of prepreg having low parameters that bond together the design. This eliminates the influence of the prepreg on the characteristics of the devices, ensuring good repeatability of filters in mass production. To increase the high-frequency stopband of the filter, one of the conductors of each resonator is cut in half by a transverse slit. The constructive sizes of the device were obtained by parametric synthesis using the electrodynamic analysis of its 3D model. The experimental data of the five-order filter are in good agreement with the electromagnetic simulation of filter of the 3D model. The experimental device has a central frequency of the passband of 10 GHz and a fractional bandwidth of 5.7%, and its dimensions and weight are 18.0 × 5.4 × 2.1 mm3 and 0.5 g. The important advantage of the developed design is the possibility of its installation on the board using the surface mounting method.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin A. S., Fadeev Y. V., Govorun I. V., Voloshin A. S., Tambasov I. A., Simunin M. M., Khartov S. V.
Заглавие : A transparent radio frequency shielding coating obtained using a self-organized template
Место публикации : Tech. Phys. Lett. - 2021. - Vol. 47, Is. 3. - P.259-262. - ISSN 10637850 (ISSN), DOI 10.1134/S1063785021030159
Примечания : Cited References: 10
Аннотация: We present a simple and affordable technology for producing a thin-film transparent radio-shielding material. The material is a silver micromesh coating produced using a self-organized template. The results of a study of the radio-shielding properties of these coatings in the X and K bands are presented. The micromesh coating with a sheet resistance of 6.8 Ω/sq and integrated optical transmission of 83.6% is characterized by a shielding efficiency of 28.4 dB at a frequency of 8 GHz, which corresponds to a shielding of 99.85% of radiation. Reflection is the main mechanism for shielding radio waves by micromesh coatings.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Govorun I. V., Leksikov A. A., Serzhantov A. M.
Заглавие : Compact microwave power limiter with htsc element
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2018. - Vol. 11, Is. 1. - P.35-39. - ISSN 19971397 (ISSN), DOI 10.17516/1997-1397-2018-11-1-35-39; Журн. СФУ. Сер. "Математика и физика"
Примечания : Cited References: 9. - The work was supported by the Ministry of Education and Science of the Russian Federation, grant СП-3036.2016.3. of the President of the Russian Federation for State Support of Young Russian Scientists.
Ключевые слова (''Своб.индексиров.''): power limiter--microwave--damping pole--microstripe structure--htsc--ограничитель мощности--свч--полюс затухания--микрополосковая структура--втсп
Аннотация: A design of microwave power limiter having a structure of three-pole microstrip filter is developed. In the device outer resonators are coupled through an inner resonator containing high-temperature super- conducting film. Prototype of the device with central frequency 7.9 GHz and relative bandwidth 9% has insertion loss 1.5 dB in the open state and suppress a signal not less 30 dB in the limitation state.Была разработана конструкция ограничителя СВЧ-мощности, имеющая структуру трехзвенного микрополоскового фильтра. В устройстве внешние резонаторы связаны посредством внутреннего, содержащего ВТСП-пленку. Макет устройства с центральной частотой 7.9 ГГц и относительной полосой пропускания 9% имеет потери 1.5 дБ в открытом состоянии и не менее 30 дБ ослабления в режиме ограничения.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin A. S., Fadeev Y. V., Govorun I. V., Podshivalov I. V., Simunin M. M., Tambasov I. A., Karpova D. V., Smolyarova T. E., Lukyanenko A. V., Karacharov A. A., Nemtsev I. V., Khartov S. V.
Заглавие : Cu-Ag and Ni-Ag meshes based on cracked template as efficient transparent electromagnetic shielding coating with excellent mechanical performance
Коллективы : Russian Foundation for Basic Research projectRussian Foundation for Basic Research (RFBR) [18-38-00852]; Russian FederationRussian Federation [SP-2235.2019.1]
Место публикации : J. Mater. Sci. - 2021. - Vol. 56. Is. 26. - P.14741-14762. - ISSN 0022-2461, DOI 10.1007/s10853-021-06206-4. - ISSN 1573-4803(eISSN)
Примечания : Cited References: 79. - This work was supported by Russian Foundation for Basic Research project «mol_a» № 18-38-00852 and a scholarship from the President of the Russian Federation SP-2235.2019.1. The sputtering Ag seed mesh and physicochemical analysis of materials was carried out on the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS»
Предметные рубрики: COPPER NANOWIRES
METALLIC MESH
PLASTIC SUBSTRATE
ELECTRODES
FILMS
Аннотация: Nowadays, the technical advances call for efficient electromagnetic interference (EMI) shielding of transparent devices which may be subject to data theft. We developed Cu–Ag and Ni–Ag meshes on flexible PET substrate for highly efficiency transparent EMI shielding coating. Cu–Ag and Ni–Ag meshes obtained with galvanic deposition of copper and nickel on thin Ag seed mesh which was made by cracked template method. Coefficients S11, S21 and shielding efficiency (SE) were measured for Cu–Ag and Ni–Ag meshes in X-band (8–12 GHz) and K-band (18–26.5 GHz). 90 s copper deposition increase SE from 23.2 to 43.7 dB at 8 GHz with a transparency of 82.2% and a sheet resistance of 0.25 Ω/sq. The achieved maximum SE was 47.6 dB for Cu–Ag mesh with 67.8% transparency and 41.1 dB for Ni–Ag mesh with 77.8% transparency. Cu–Ag and Ni–Ag meshes have high bending and long-term stability. Minimum bend radius is lower than 100 µm. This effect allows to produce different forms of transparent shielding objects, for example, origami method. Our coatings are the leading among all literary solutions in three-dimensional coordinates: of sheet resistance–optical transmittance–cost of produced.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Afonin A. O., Alexandrovsky A. S., Govorun I. V., Leksikov A. A., Ugryumov A. V., Ogorodnikov D. K.
Заглавие : Dual band HTSC power limiter
Колич.характеристики :7 с
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2024. - Vol. 17, Is. 2. - P.162-168. - ISSN 19971397 (ISSN); Журн. СФУ. Матем. и физ.
Примечания : Cited References: 10
Аннотация: A new construction of dual band HTSC power limiter is proposed. The device consists of two microstrip bandpass filters. Each filter consists of two quarter-wave resonators which couple through a composite half-wave resonator with HTSC-element. The prototype of the device in the open mode has operation passband of about 10% and 11% with central frequency being equal to 1.48 GHz and 2.03 GHz, the minimum loss in the passband is equal 1.9 dB and 1.7 dB for LF-channel and HF-channel correspondingly. The transfer characteristics of the device were investigated in the case of microwave power level up to 3.15 W.Предложена новая конструкция ВТСП ограничителя мощности с двумя рабочими полосами. Ограничитель содержит два микрополосковых полосно-пропускающих фильтра. Каждый фильтр состоит из двух четвертьволновых резонаторов, которые связаны между собой через составной полуволновый резонатор, содержащий пленку из высокотемпературного сверхпроводника. Макет устройства в открытом режиме имеет ширины рабочих полос пропускания 10% и 11% с центральными частотами 1.48 ГГц и 2.03 ГГц. Минимальные вносимые потери составили 1.9 дБ и 1.7 дБ для НЧ- и ВЧ-каналов соответственно. Передаточные характеристики устройства были исследованы до уровня СВЧ-мощности 3.15 Вт.
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Вид документа : Статья из сборника (выпуск монографической серии)
Шифр издания :
Автор(ы) : Govorun I. V., Leksikov A. A., Serzhantov A. M.
Заглавие : Features of the coupling coefficients of microstrip irregular quarter-wavelength resonators
Коллективы : International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering
Место публикации : 13th International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering (APEIE): IEEE, 2017. - Vol. 4. - P.29-32. - (International Conference on Actual Problems of Electronic Instrument)
Примечания : Cited References:9
Предметные рубрики: HAIRPIN RESONATORS
Ключевые слова (''Своб.индексиров.''): microstrip resonator--coupling coefficient--inductive and capacitive--interactions--damping pole
Аннотация: In the present work on the base of modified energy approach a behavior of the frequency-dependent coupling coefficient of pair microstrip stepped-impedance quarter-wavelength resonators was investigated. It is revealed that at a certain gap between the resonators the total coefficient of coupling becomes zero due to mutual compensation of coefficients describing inductive and capacitive interactions between the resonators.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Govorun I. V., Leksikov Al. A., Serzhantov A. M.
Заглавие : Investigation of the special features of the coupling coefficients for microstrip asymmetric hairpin resonators at frequencies of the second passband
Место публикации : Rus. Phys. J. - 2013. - Vol. 55, Is. 10. - P.1215-1221. - ISSN 1064-8887, DOI 10.1007/s11182-013-9945-3
Ключевые слова (''Своб.индексиров.''): coupling coefficient--frequency response--high-temperature superconductor--inductive and capacitive interactions--microstrip resonator
Аннотация: The behavior of the frequency-dependent coupling coefficients is investigated for a pair of microstrip resonators formed by conductors shaped as an asymmetrical hairpin. It is demonstrated that the total coupling coefficient of the resonators in a two-pole filter becomes close to zero in the region of the frequency of the second resonance due to mutual compensation for inductive and capacitive interactions. This allows a device for protection against high-power radio pulse to be developed based on such resonators with additional hairpin resonator containing control element manufactured from high-temperature superconductor (HTS) film. В© 2013 Springer Science+Business Media New York.
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10.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Govorun I. V., Afonin A. O., Ugryumov A. V., Solovev P. N., Leksikov An. A., Boev N. M.
Заглавие : Magnetic frequency doubler
Коллективы : International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices
Место публикации : 23rd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2022: (30 June - 4 July 2022, Altai): IEEE Computer Society, 2022. - Vol. 2022-June. - P.135-139. - , DOI 10.1109/EDM55285.2022.9855072
Примечания : Cited References: 10. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047. The equipment of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” was used during the measurement
Аннотация: This article presents the compact magnetic frequency doubler based on a quarter-wavelength stepped-impedance microstrip resonator with a 125-nm-thick permalloy (Ni 70 Fe 30 ) magnetic film. For the first time, the implementation of a frequency doubler operating at the high-field peak is shown. To produce a uniform magnetic field in the thin magnetic film plane, the magnetic system consisting of individual permanent magnets and based on the circular Halbach array was developed. The uniformity of the magnetic field in the region of 10×10 mm2 was 4.9%. Two bandpass filters were developed. The input filter serves to purify the input signal from parasitic harmonics. The output filter blocks the input signal in the resonator. The resonator, magnetic system, input and output filters are integrated into a single device. The maximum measured conversion efficiency was 0.97% (at 1 GHz) at the input power of 4800 mW. The −3 dB fractional bandwidth of the magnetic frequency doubler was 2.15%.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Leksikov A. A., Serzhantov A. M., Govorun I. V., Afonin A. O., Ugryumov A. V., Leksikov An. A.
Заглавие : Microstrip diplexer with Π-shaped matching circuit
Место публикации : Prog. Electromagn. Res. Lett. - 2020. - Vol. 88. - P.59-65. - ISSN 19376480 (ISSN), DOI 10.2528/PIERL19083005
Примечания : Cited References: 15. - The work is supported by the Ministry of science and highest education of the Russian Federation (contract #03.G25.31.0279).
Аннотация: We propose a new method to match diplexer channels with a common port in which a Π-shaped strip conductor is used as a matching circuit. The applicability of the method is illustrated by simulating and fabricating a microstrip diplexer for GPS/GLONASS applications. The central frequencies of the channels are 1.234 GHz and 1.597 GHz, and their fractional bandwidths are 6.8% and 7.3%, respectively; minimum insertion losses are 1.05 dB and 1.08 dB. The main advantage of the diplexer is its compact size: 16.8 mm × 9.0 mm × 6.4 mm in housing. Using 1D models and a quasi-TEM approach, the frequency-dependent coupling coefficients between the matching circuit and input resonators of the channels are calculated, and the influence of the matching circuit’s geometrical parameters on its coupling with diplexer channels is studied. © 2020, Electromagnetics Academy. All rights reserved.
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12.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Govorun I. V., Solovev P. N., Boev N. M., Afonin A. O., Ugryumov A. V., Skomorokhov G. V.
Заглавие : Microstrip frequency doublers based on a thin magnetic film
Коллективы : Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology
Место публикации : Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology, USBEREIT 2022: Proceedings: IEEE, 2022. - P.126-130. - , DOI 10.1109/USBEREIT56278.2022.9923409
Примечания : Cited References: 11. - This work is supported by the Russian Science Foundation under grant 19-72-10047
Аннотация: The article presents the results of measuring the generation of the second harmonic in a microstrip transmission line and in a quarter-wavelength stepped-impedance microstrip resonator with a thin permalloy magnetic film (Ni80Fe20 ). The measurements were carried out for three samples with different thicknesses – 50 nm, 75 nm and 100 nm, at an input signal excitation frequency of 1 GHz and maximum input power of ~3500 mW. It was shown that the level of the second harmonic rises as the TMF thickness increases. It was found that a 100-nm sample generates the second harmonic more efficiently due to the larger ΔH FMR and the larger amount of magnetic material involved in the process of nonlinear conversion of the input power. It was shown that the resonator-based frequency doubler has a conversion factor ~4500 times higher than that of the doubler based on the microstrip line due to the higher value of the loaded Q-factor. Therefore, a quarter-wavelength stepped-impedance microstrip resonator can be used as a frequency doubler.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov A. A., Govorun I. V., Serzhantov A.M.
Заглавие : Microstrip protector
Коллективы : International Crimean Conference Microwave and Telecommunication Technology, CriMiCo 2014
Место публикации : KpbiMuKo 2009 CriMiCo - 2009 19th International Crimean Conference Microwave and Telecommunication Technology, Conference Proceedings. - 2009. - P.511-512. - ISBN 9789663352497 (ISBN)
Ключевые слова (''Своб.индексиров.''): control elements--microstripes--new construction--protection device--radio pulse--electric batteries--high temperature superconductors--microwaves--computer crime
Аннотация: New construction of microstrip radio pulse protection device is proposed which control element is a rectangular HTS film frame. © 2009: CriMiCo'2009 Organizing Committee.
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14.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Leksikov A. A., Afonin A. O., Aleksandrovsky A. S., Ugryumov A. V., Serzhantov A. M., Govorun I. V.
Заглавие : Microstrip rejecting bandstop filter
Коллективы : IEEE International Multi-Conference on Engineering, Computer and Information Sciences 2022
Место публикации : 2022 IEEE International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2022: IEEE, 2022. - P.1200-1203. - , DOI 10.1109/SIBIRCON56155.2022.10016938
Примечания : Cited References: 13
Аннотация: The paper is devoted to simulation, designing and fabrication of a microstrip 5-order bandstop rejecting filter. The bandstop filter uses classic schem, e.g. it consists of a microstrip through (common) line whose ends serve input and output ports. In the vicinity of the line a number of microstrip rejecting resonators locate, in our case five S-shaped resonators. They electromagnetically interact with the line, that forces signals, having frequenscies, bieng equal to the resonant ones, to reject (reflect) from a device. Dielectric substrate of the device has thickness 1.0 mm, and other sizes are 44.0×20.0 mm 2 . The filter described in this work has shielding. In a band 1480 MHz …1499 MHz rejection exceeds 50 dB. Transmission bands at a level –2 dB are 0…1437 MHz and 1563 MHz…3000 MHz lower and upper correspondingly. Return loss in the passbands does not exceed –16 dB (VSWR≤1.4). Good agreement is observed between simulated and experimental data. Fabricated filter has small size.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Afonin A. O., Ugryumov A. V., Govorun I. V., Solovev P. N., Leksikov An. A.
Заглавие : Microstrip resonator for nonlinearity investigation of thin magnetic films and magnetic frequency doubler
Место публикации : Rev. Sci. Instrum. - 2020. - Vol. 91, Is. 11. - Ст.114705. - ISSN 00346748 (ISSN), DOI 10.1063/5.0009045
Примечания : Cited References: 40. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047
Аннотация: A structure that consists of a λ/4 stepped-impedance microstrip resonator is proposed as an instrument for the investigation of nonlinear effects in thin magnetic films and also can be used as a microwave frequency doubler. A conversion efficiency of 0.65% is observed at a one-layer 100 nm Ni80Fe20 thin film at an input signal level of 4.6 W for a 1 GHz probe signal. The maximum measured conversion efficiency (1% at 1 GHz) was achieved for the 9-layer Ni80Fe20 film where 150 nm magnetic layers were separated by SiO2 layers.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Leksikov A. A., Serzhantov A. M., Govorun I. V., Afonin A. O., Ugryumov A. V., Leksikov An. A.
Заглавие : Miniaturized suspended-substrate two-conductors resonator and a filter on its base
Место публикации : Prog. Electromagn. Res. M. - 2019. - Vol. 84. - P.127-135. - ISSN 19378726 (ISSN), DOI 10.2528/PIERM19060604
Примечания : Cited References: 14. - The work is supported by the Ministry of science and highest education of the Russian Federation (contract #03.G25.31.0279).
Аннотация: The paper is devoted to an investigation of two-conductor suspended-substrate resonators. For the purpose of miniaturization conductors of a resonator are folded. Four types of the resonator differing in conductors’ configurations were considered. Their Q0-factors and resonant frequencies were studied. Based on results of the study two types of the resonator appeared unsuitable for an application in compact filters. Two other types were investigated in concern of their interaction: dependencies of coupling coefficients versus space between resonators and versus distance from substrate’s surfaces, and package’s covers were obtained. Based on the dependences a type of the resonator suitable for designing compact BPF was chosen. A four-pole BPF was simulated and fabricated. Good agreement between simulated and experimental results is observed. The main filter’s characteristics are the next: substrate has ε = 80, thickness 0.5 mm, lateral sizes 0.13λg × 0.09λg (18.7mm× 13.2 mm). The central frequency is 305 MHz; bandwidth is 39 MHz; passband minimum insertion loss is 2.0 dB; passband return loss is less −14.6dB; −40 dB stopband width is 480 MHz.
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov A.A., Govorun I. V., Izotov A.V., Serzhantov A.M.
Заглавие : Narrowband stripline filter on suspended substrate
Коллективы : International Crimean Conference Microwave and Telecommunication Technology, CriMiCo 2014
Место публикации : KpbiMuKo 2009 CriMiCo - 2009 19th International Crimean Conference Microwave and Telecommunication Technology, Conference Proceedings. - 2009. - P.503-504. - ISBN 9789663352497 (ISBN)
Ключевые слова (''Своб.индексиров.''): narrow band filter--narrow bands--stripline filters--stripline resonators--suspended substrates--microwaves--strip telecommunication lines--computer crime
Аннотация: A method of decreasing of interaction between stripline resonators on a suspended substrate that allows reducing sizes of narrowband filters on their base is proposed. © 2009: CriMiCo'2009 Organizing Committee.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Govorun I. V., Leksikov A. A., Serzhantov A. M.
Заглавие : Receiver protecting device based on microstrip structure with high-temperature superconductor film
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 38, Is. 3. - P.211-214. - ISSN 1063-7850, DOI 10.1134/S1063785012030066
Примечания : Cited References: 12. - This study was supported by the Ministry of Science and Education of the Russian Federation in the framework of the Federal Targeted Program "Research and Pedagogical Personnel of Innovative Russia (2009-2013)" and by the Siberian Branch of the Russian Academy of Sciences (Integration Project No. 5).
Аннотация: New design of an effective device for protection against high-power electromagnetic pulses has been created based on a pair of noninteracting microstrip resonators, which are coupled in the working frequency band via a third resonator based on a thin film of high-temperature superconductor (HTSC) occurring in the superconducting state. Under the action of an electromagnetic pulse with the power above a certain threshold, the HTSC film element passes from the superconducting to normal (high-resistivity) state, thus breaking the coupling between resonators. This leads to power limitation at the device output due to a strong signal reflection from the input.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Govorun I. V., Leksikov Al. A., Serzhantov A. M., Leksikov An. A.
Заглавие : Reflective power limiter for X-band with HTSC switching element
Место публикации : IEEE Trans. Appl. Supercond.: IEEE-Institute Electrical and Electronics Engineers, 2016. - Vol. 26, Is. 6. - Ст.1500506. - ISSN 1051-8223, DOI 10.1109/TASC.2016.2530700. - ISSN 1558-2515(eISSN)
Примечания : Cited References:23
Предметные рубрики: Superconducting transmission-line
Ключевые слова (''Своб.индексиров.''): microstrip structure--microwave (mw)--power limiter (pl)--transmission--zero
Аннотация: This paper presents a new type of power limiter (PL), using superconducting-to-normal state phase transition in high-temperature superconductor. The presented device differs from the existing ones mainly in the reflective principle of its operation. In fact, the PL is a three-resonator microstrip filter, whose resonators are configured and arranged in such a manner that coupling coefficient between the outer resonators is equal to zero and the inner one has a gap in the middle section shunted by a high-temperature superconducting (HTS) film element. In small-signal mode, the HTS element is in low-loss state, and the device is essentially a three-pole filter with low transmission loss. When the level of the signal exceeds the threshold, the HTS element transits to the high-loss state, and the Q-factor of the inner resonator falls, breaking the coupling in the structure. This leads to the corresponding increase in the PL's transmission loss due to reflection. The higher the level of incoming power, the more the Q-factor falls. The PL operating frequency is 8 GHz with 8.5% fractional bandwidth. It remains operable up to 40 W of input power, providing 38-dB limitation.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Solovev P. N., Afonin A. O., Belyaev B. A., Boev N. M., Govorun I. V., Izotov A. V., Ugrymov A. V., Leksikov An. A.
Заглавие : Second harmonic generation as a probe of parametric spin wave instability processes in thin magnetic films
Место публикации : Phys. Rev. B. - 2022. - Vol. 106, Is. 6. - Ст.064406. - ISSN 24699950 (ISSN), DOI 10.1103/PhysRevB.106.064406
Примечания : Cited References: 33. - This work was supported by the Russian Science Foundation under Grant No. 19-72-10047. The equipment of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” was used during the measurements
Аннотация: We have explored the dynamic response of in-plane magnetized thin permalloy films excited by microwave fields of high amplitudes (up to 3 Oe) at 1 GHz. The response was detected using a microstrip line by measuring the second harmonic signal generated by the dynamic components of the uniform magnetization. The data measured at ferromagnetic resonance showed the threshold effect of the Suhl parametric instability process. With the increase of the microwave power above the threshold value, the dynamic response revealed an intricate nonlinear behavior, including the emergence of an additional threshold. This second threshold can be explained in terms of the "stage by stage"process of parametric spin wave excitation following the S theory of Zakharov, L'vov, and Starobinets.
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