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    Разъемное соединение объединенных коаксиального и круглого волноводов / К. В. Лемберг, Н. М. Боев, Д. А. Шабанов [и др.]. - № 2022129972 ; Заявл. 18.11.2022 ; Опубл. 07.03.2023 // Изобретения. Полезные модели : офиц. бюл. Фед. службы по интеллектуал. собственности (Роспатент). - 2023. - № 19
   Перевод заглавия: Detachable connection of combined coaxial and circular waveguides
Аннотация: Изобретение относится к технике сверхвысоких частот и предназначено для соединения объединенных коаксиального и круглого волноводов, используемых в облучателях двухзеркальных антенн. Разъемное соединение объединенных коаксиального и круглого волноводов содержит две соосные проводящие трубки разного диаметра. Внутренняя трубка одновременно является круглым волноводом и проводником коаксиального волновода, а внешняя трубка является экраном коаксиального волновода. В месте разъемного соединения внутренняя проводящая трубка напрямую стыкуется с круглым волноводом, внутрь коаксиального волновода вставлен цилиндр со скосом под углом 45°, причем напротив скоса цилиндра во внешней проводящей трубке расположено окно прямоугольного волновода. Технический результат - возможность жесткого крепления внутренней трубки совмещенного коаксиально круглого волновода при одновременном обеспечении возможности его разъемного cочленения, а также увеличение развязки между сигналами в коаксиальном и круглом волноводах устройства. 6 ил.

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Держатели документа:
Институт физики им. Л. В. Киренского СО РАН

Доп.точки доступа:
Лемберг, Константин Вячеславович; Lemberg, K. V.; Боев, Никита Михайлович; Boev, N. M.; Шабанов, Дмитрий Александрович; Shabanov, D. A.; Клешнина, Софья Андреевна; Kleshnina, S. A.; Грушевский, Евгений Олегович; Grushevskii, Ye. O.; Александровский, Александр Сергеевич; Aleksandrovsky, A. S.; Лексиков, Андрей Александрович; Leksikov, An. A.; Шумилов, Тимофей Юрьевич; Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук"; Федеральная служба по интеллектуальной собственности (Роспатент); Федеральный институт промышленной собственности
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Demountable K/Q band coaxial feed for Cassegrain antenna / K. V. Lemberg, N. M. Boev, A. V. Kantyshev [et al.] // 2022 IEEE International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2022 : IEEE, 2022. - P. 1150-1153, DOI 10.1109/SIBIRCON56155.2022.10016929. - Cited References: 11
Кл.слова (ненормированные):
coaxial waveguides -- coaxial joint -- reflector antenna feeds -- dual-band feeds -- multiband antennas -- satellite communication
Аннотация: In this paper demountable K/Q bands feed for satellite communication Cassegrain antenna is reported. The feed is based on the combined coaxial-circular waveguide, in which outer wall of a circular waveguide is used as an inner conductor of a coaxial waveguide. This design allows to simultaneously transmit and receive signals in two widely separated frequency bands. A coaxial joint, which is the key part of the feed, is proposed and described in details. The joint performs several functions. First is to transmit the microwave energy through both waveguides. Second is ensuring the waveguides sealing. And third is ensuring the circular and coaxial waveguides alignment. The joint simulation results demonstrated return loss below-20 dB and insertion loss less than 0.06 dB in 20-21 GHz frequency range (K-band) as well as return loss below-30 dB and insertion loss less than 0.15 dB in 43-45.5 GHz frequency range (Q-band). Mechanical prototype of the joint was manufactured and tested.

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Держатели документа:
Scientific Instruments Lab, Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
Space Systems Design Office, JSC Information Satellite Systems, Zheleznogorsk, Russian Federation

Доп.точки доступа:
Lemberg, K. V.; Лемберг, Константин Вячеславович; Boev, N. M.; Боев, Никита Михайлович; Kantyshev, A. V.; Grican, O. B.; Shabanov, D. A.; Шабанов, Дмитрий Александрович; IEEE International Multi-Conference on Engineering, Computer and Information Sciences 2022(1-13 November 2022 ; Yekaterinburg, Russian Federation)
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    Fabry-Perot bound states in the continuum in an anisotropic photonic crystal / S. V. Nabol, P. S. Pankin, D. N. Maksimov, I. V. Timofeev // Phys. Rev. B. - 2022. - Vol. 106, Is. 24. - Ст. 245403, DOI 10.1103/PhysRevB.106.245403. - Cited References: 42. - We acknowledge discussions with Almas F. Sadreev. This study was supported by the Council on Grants of the President of the Russian Federation (MK-4012.2021.1.2) . - ISSN 2469-9950. - ISSN 2469-9969
   Перевод заглавия: Связанное состояние в континууме Фабри-Перо в анизотропном фотонном кристалле
Кл.слова (ненормированные):
Fabry-Perot interferometers -- Optical waveguides -- Photonic crystals
Аннотация: An anisotropic photonic crystal containing two anisotropic defect layers is considered. It is demonstrated that the system can support a Fabry-Perot bound state in the continuum (FP-BIC). A fully analytic solution of the scattering problem as well as a condition for FP-BIC have been derived in the framework of the temporal coupled-mode theory.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Nabol, S. V.; Наболь, Степан Васильевич; Pankin, P. S.; Панкин, Павел Сергеевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Timofeev, I. V.; Тимофеев, Иван Владимирович
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General framework of bound states in the continuum in an open acoustic resonator / L. Huang, B. Jia, A. S. Pilipchuk [et al.] // Phys. Rev. Appl. - 2022. - Vol. 18, Is. 5. - Ст. 054021, DOI 10.1103/PhysRevApplied.18.054021. - Cited References: 47. - L.H. and A.E.M. are supported by the Australian Research Council Discovery Project (Grant No. DP200101353) and the UNSW Scientia Fellowship program. Y.K.C. and D.A.P. are supported by the Australian Research Council Discovery Project (Grant No. DP200101708). B.J., S.H., and Y.L. are supported by the National Natural Science Foundation of China (Grant No. 12074286) and the Shanghai Science and Technology Committee (Grant No. 21JC1405600). A.P., E.B., and A.S. are supported by the Russian Science Foundation (Grant No. 22-12-00070) . - ISSN 2331-7019
Кл.слова (ненормированные):
Acoustic resonators -- Acoustic waveguides -- Bound-states -- Coupled waveguide resonators -- Degenerate modes -- Eigen modes -- General method -- High-Q resonances -- Momentum spaces -- Non-Hermitian Hamiltonians -- Waveguide-resonators -- Waveguide filters
Аннотация: Bound states in the continuum (BICs) provide a viable way of achieving high-Q resonances in both photonics and acoustics. In this work, we propose a general method of constructing Friedrich-Wintgen (FW) BICs and accidental BICs in a coupled acoustic waveguide-resonator system. We demonstrate that FW BICs can be achieved with arbitrary two degenerate resonances in a closed resonator, regardless of whether they have the same or opposite parity. Moreover, their eigenmode profiles can be arbitrarily engineered by adjusting the position of the attached waveguide. This suggests an effective way of continuously switching the nature of the BICs from FW BICs to symmetry-protected BICs or accidental BICs. Also, such BICs are sustained in the coupled waveguide-resonator system with shapes such as rectangles, ellipses, and rhomboids. These interesting phenomena are well explained by the two-level effective non-Hermitian Hamiltonian, where two strongly coupled degenerate modes play a major role in forming such FW BICs. Additionally, we find that such an open system also supports accidental BICs in geometry space instead of momentum space via tuning the position of the attached waveguide, which is attributed to the quenched coupling between the waveguide and eigenmodes of the closed cavity. Finally, we fabricate a series of three-dimensional coupled resonator waveguides and experimentally verify the existence of FW BICs and accidental BICs by measuring the transmission spectra. Our results complement the current BIC library in acoustics and provide nice routes for designing acoustic devices, such as acoustic absorbers, filters, and sensors.

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Держатели документа:
School of Engineering and Information Technology, University of New South Wales, Northcott Drive, Canberra, ACT 2600, Australia
Institute of Acoustics, Tongji University, Shanghai, 200092, China
L. V. Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, RAN, Krasnoyarsk, 660036, Russian Federation
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, United States
Department of Mechanical Engineering, Rowan University, Glassboro, NJ 08028, United States

Доп.точки доступа:
Huang, L.; Jia, B.; Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Chiang, Y.; Huang, S.; Li, J.; Shen, C.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Deng, F.; Powell, D. A.; Cummer, S. A.; Li, Y.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Miroshnichenko, A. E.
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    Pilipchuk, A. S.
    Generation of vortex waves in non-coaxial cylindrical waveguides / A. S. Pilipchuk, A. A. Pilipchuk, A. F. Sadreev // J. Acoust. Soc. Am. - 2019. - Vol. 146, Is. 6. - Ст. 4333, DOI 10.1121/1.5139222. - Cited References: 26. - We acknowledge discussions with Dmitrii Maksimov. This work was supported by RFBR Grant No. 18-32-00234. . - ISSN 0001-4966. - ISSN 1520-8524
   Перевод заглавия: Генерация вихревых волн в некоаксиальных цилиндрических волноводах
Рубрики:
Operator theory
   Coordinate system
   Waveguides
   Wave mechanics
   Acoustic field
   Optical field
   Optical tweezers
   Acoustical properties
   Acoustic waves
   Electrical properties and parameters
Аннотация: A non-coaxial waveguide composed of a cylindrical resonator of radius R and cylindrical waveguides with the radii r1 and r2, respectively, is considered. The radii satisfy the inequality r1˂r2˂R. The conversion from the channel with zero orbital angular momentum (OAM) into the channels with non-zero OAM is achieved by shifting the center lines of the waveguides relative to the center line of the cylindrical resonator. The center lines of input and output waveguides are shifted relative to each other by the angle Δϕ in order to twist the output acoustic wave. The conversion efficiency of the input wave with zero OAM into the output wave with non-zero OAM as dependent on the frequency, length of the resonator, and Δϕ is considered, and the domains where the efficiency can reach almost 100% are found.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Pilipchuk, A. A.; Пилипчук, Алина Андреевна; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Пилипчук, Артем Сергеевич
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Titanium nitride nanoparticles as an alternative platform for plasmonic waveguides in the visible and telecommunication wavelength ranges / V. I. Zakomirnyi [et al.] // Photonics Nanostruc. Fundam. Appl. - 2018. - Vol. 30. - P. 50-56, DOI 10.1016/j.photonics.2018.04.005. - Cited References: 85. - This work was supported by the RF Ministry of Education and Science, the State contract with Siberian Federal University for scientific research in 2017–2019 and SB RAS Program No II.2P (0358-2015-0010). . - ISSN 1569-4410
Кл.слова (ненормированные):
Nanoparticle -- Titanium nitride -- Surface plasmon polariton -- Plasmon waveguide -- Refractory plasmonics
Аннотация: We propose to utilize titanium nitride (TiN) as an alternative material for linear periodic chains (LPCs) of nanoparticles (NPs) which support surface plasmon polariton (SPP) propagation. Dispersion and transmission properties of LPCs have been examined within the framework of the dipole approximation for NPs with various shapes: spheres, prolate and oblate spheroids. It is shown that LPCs of TiN NPs support high-Q eigenmodes for an SPP attenuation that is comparable with LPCs from conventional plasmonic materials such as Au or Ag, with the advantage that the refractory properties and cheap fabrication of TiN nanostructures are more preferable in practical implementations compared to Au and Ag. We show that the SPP decay in TiN LPCs remains almost the same even at extremely high temperatures which is impossible to reach with conventional plasmonic materials. Finally, we show that the bandwidth of TiN LPCs from non-spherical particles can be tuned from the visible to the telecommunication wavelength range by switching the SPP polarization, which is an attractive feature for integrating these structures into modern photonic devices.

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Держатели документа:
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, Russian Federation
School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
Institute of Computational Modeling, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zakomirnyi, V. I.; Rasskazov, I. L.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Ershov, A. E.; Ершов, Александр Евгеньевич; Polyutov, S. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Agren, H.
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Belyaev, B. A.
An X-band magnetically tunable bandpass filter based on novel waveguide cavity resonator / B. A. Belayev, K. V. Lemberg, A. M. Serzhantov // Asia-Pacific Microwave Conference Proceedings, APMC 2016 : Institute of Electrical and Electronics Engineers Inc., 2017, DOI 10.1109/APMC.2016.7931355. - Cited References: 12
Кл.слова (ненормированные):
Bandpass filters -- Cavity resonators -- Waveguides -- Operating modes -- Relative bandwidth -- Tunable band-pass filters -- Tunable frequency -- Tunable wave-guides -- Two-pole filters -- Unloaded quality factors -- Waveguide cavity resonators -- Waveguide filters
Аннотация: This paper presents a ferrite tunable waveguide filter showing high Qu and high tunability in X-band. A new type of waveguide cavity resonator with an H102 operating mode was proposed for the creation of a low-loss, two-pole filter. The filter results in an insertion loss of 3.6-4.1 dB over the tuning range 8.74-9.63 GHz with a relative bandwidth of 0.92-0.79% and biasing magnetic field 0-600 Oe. This design demonstrates an unloaded quality factor of 380-396 over the tunable frequency range. © 2016 IEEE.

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Доп.точки доступа:
Lemberg, K. V.; Serzhantov, A. M.; Сержантов, Алексей Михайлович; Беляев, Борис Афанасьевич; Asia-Pacific Microwave Conference(2016 ; Dec. ; New Delhi)
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Thermal limiting effects in optical plasmonic waveguides / A. E. Ershov [et al.] // J. Quant. Spectrosc. Radiat. Transf. - 2017. - Vol. 191. - P. 1-6, DOI 10.1016/j.jqsrt.2017.01.023. - Cited References: 51. - This work was performed within the State contract of the RF Ministry of Education and Science for Siberian Federal University for scientific research in 2017-2019 and SB RAS Program No II.2P (0358-2015-0010). The numerical calculations were performed using the MVS-1000M cluster at the Institute of Computational Modeling, Federal Research Center KSC SB Russian Academy of Sciences. . - ISSN 0022-4073
Кл.слова (ненормированные):
Plasmon resonance -- Optical plasmonic waveguide -- Surface plasmon polariton -- Thermal effects
Аннотация: We have studied thermal effects occurring during excitation of optical plasmonic waveguide (OPW) in the form of linear chain of spherical Ag nanoparticles by pulsed laser radiation. It was shown that heating and subsequent melting of the first irradiated particle in a chain can significantly deteriorate the transmission efficiency of OPW that is the crucial and limiting factor and continuous operation of OPW requires cooling devices. This effect is caused by suppression of particle's surface plasmon resonance due to reaching the melting point temperature. We have determined optimal excitation parameters which do not significantly affect the transmission efficiency of OPW. © 2017

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Держатели документа:
Institute of Computational Modeling, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Royal Institute of Technology, Stockholm, Sweden
The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, United States

Доп.точки доступа:
Ershov, A. E.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Gavrilyuk, A. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Zakomirnyi, V. I.; Rasskazov, I. L.; Polyutov, S. P.
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Thermal effects in optical plasmonic waveguides / A. E. Ershov [и др.] // The International Conference on Coherent and Nonlinear Optics; The Lasers, Applications, and Technologies ICONO/LAT 2016. - 2016. - Ст. IThL14. - P. 79-80
Аннотация: We investigate the influence of the heating of the optical plasmonic waveguide in the form of chains of the plasmonic nanoparticles by laser radiation on its transmission properties

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Доп.точки доступа:
Ershov, A. E.; Ершов, Александр Евгеньевич; Gerasimov, R.E.; Rasskazov, I. L.; Рассказов, Илья Леонидович; Zakomirnyi, V. I.; Gavrilyuk, A.P.; Гаврилюк, Анатолий Петрович; Karpov, S. V.; Карпов, Сергей Васильевич; Polyutov, S. P.; International Conference on Coherent and Nonlinear Optics(2016 ; Sept. ; 26-30 ; Minsk, Belarus); International Conference on Lasers, Applications, and Technologies(2016 ; Sept. ; 26-30 ; Minsk, Belarus)
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10.

Thermal effects in optical plasmonic waveguides / A. E. Ershov [et al.] // Журнал прикладной спектроскопии. - 2016. - Т. 83: Спецвыпуск, Вып. 6-16. - P. 96-97 . - ISSN 0514-7506
Аннотация: We investigate the influence of the heating of the optical plasmonic waveguide in the form of chains of the plasmonic nanoparticles by laser radiation on its transmission properties.

РИНЦ

Доп.точки доступа:
Ershov, A. E.; Ершов, Александр Евгеньевич; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Rasskazov, I. L.; Zakomirnyi, V. I.; Закомирный Вадим Игоревич; Gavrilyuk, A. P.; Karpov, S. V.; Карпов, Сергей Васильевич; Polyutov, S. P.; International Conference on Coherent and Nonlinear Optics(2016 ; Sept. ; 26-30 ; Minsk, Belarus); International Conference on Lasers, Applications, and Technologies(2016 ; Sept. ; 26-30 ; Minsk, Belarus)
}
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