Search Results - "Rozhnev, Andrey G."

High-Dimensional Chaos in a Gyrotron by Blokhina, E.V., Kuznetsov, S.P., Rozhnev, A.G.

“…In this paper, nonstationary and chaotic dynamics of a gyrotron with a nonfixed field structure have been studied. We discuss the mechanism of transition to…”
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Design Study on a Multiple-Tunnel Meander-Line Slow-Wave Structure for a High-Power V-Band Traveling-Wave Tube by Torgashov, Roman A., Rozhnev, Andrey G., Ryskin, Nikita M.

“…Nowadays, there is a strong interest in miniature and high-power vacuum electron devices (VEDs) operating in millimeter and sub-THz bands. VED sources of…”
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Meander-Line Slow-Wave Structure for High-Power Millimeter-Band Traveling-Wave Tubes With Multiple Sheet Electron Beam by Torgashov, Gennadiy V., Torgashov, Roman A., Titov, Vladimir N., Rozhnev, Andrey G., Ryskin, Nikita M.

“…For advanced telecommunications and radar systems, high-power miniaturized millimeter-band traveling-wave tubes (TWTs) are required. In this letter, we propose…”
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Electromagnetic Modeling of a Complex-Cavity Resonator for the 0.4-THz Second-Harmonic Frequency-Tunable Gyrotron by Melnikova, Maria M., Rozhnev, Andrey G., Ryskin, Nikita M., Tatematsu, Yoshinori, Fukunari, Masafumi, Yamaguchi, Yuusuke, Saito, Teruo

“…Complex-cavity resonator with mode conversion is a promising way of improving mode selection properties of a terahertz gyrotron. In this paper, enhancement of…”
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Chalcogenide fiber loop probe for the mid-IR spectroscopy of oil products by Romanova, Elena A, Korsakova, Svetlana V, Rozhnev, Andrey G, Velmuzhov, Alexander P, Kotereva, Tatiana V, Sukhanov, Maxim V, Shiryaev, Vladimir S

“…A theoretical approach based on the electromagnetic theory of optical fibers has been applied in the analysis of the evanescent modes of a chalcogenide fiber…”
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Frequency Stabilization of a 0.67-THz Gyrotron by Self-Injection Locking by Melnikova, Maria M., Rozhnev, Andrey G., Ryskin, Nikita M., Tyshkun, Alexandra V., Glyavin, Mikhail Yu, Novozhilova, Yulia V.

“…Self-injection locking of a gyrotron by a delayed signal is considered. The results of theoretical analysis and numerical simulations explaining gyrotron…”
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Modeling of a Complex Cavity Resonator with Unequal Cavity Lengths for the Frequency-Tunable Sub-THz Gyrotron by Melnikova, Maria M., Rozhnev, Andrey G., Ryskin, Nikita M.

“…The possibility of improving mode selection properties and enhance of the frequency tunability by using the complex cavity resonator with unequal cavity…”
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Study of the Influence of Synchronization on the Mode Competition in a Gyrotron by Adilova, Asel B., Rozhnev, Andrey G., Ryskin, Nikita M.

“…The mutual synchronization of two delay-coupled gyrotrons has attracted a considerable interest in recent years. In this paper, we study the effect of…”
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Frequency stabilization of a 0.67 THz gyrotron by delayed reflection by Melnikova, Maria M., Rozhnev, Andrey G., Ryskin, Nikita M., Tyshkun, Alexandra V., Glyavin, Mikhail Y., Novozhilova, Yulia V.

“…Effect of delayed reflection from a remote load on operation of a gyrotron is considered. Improving of frequency stability by the wave reflected from the load…”
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3-D PIC Simulation of the High-Power Traveling-Wave Tube with Multiple-Tunnel Meander-Line Slow-Wave Structure by Torgashov, Roman A., Ryskin, Nikita M., Rozhnev, Andrey G.

“…Development of miniature and high-power vacuum electron devices as sources of coherent millimeter and THz radiation is one of the promising tasks for modern…”
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Modified Spectral Approach with Linearized Boundary Condition for Gyrotron Cavity Modeling by Rozhnev, Andrey G., Melnikova, Maria M., Ryskin, Nikita M.

“…The article proposes a simple method for calculating the complex frequencies and field distributions of lon-gitudinal modes in an open cavity of a gyrotron…”
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Multiple-Tunnel Microfabricated Slow-Wave Structures for Millimeter-Band Traveling-Wave Tubes With Multiple Sheet Electron Beams by Ryskin, Nikita M., Starodubov, Andrey V., Torgashov, Roman A., Rostuntsova, Alena A., Navrotsky, Igor A., Rozhnev, Andrey G.

“…Miniature O-type traveling-wave tubes (TWT) are very promising as compact sources of high-power coherent electromagnetic radiation of millimeter and THz band…”
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The Study of Millimeter-Band Multiple-Beam O-Type Vacuum Electron Devices by Torgashov, Roman A., Kolesnichenko, Evgenia E., Rostuntsova, Alena A., Rozhnev, Andrey G., Starodubov, Andrey V., Ryskin, Nikita M.

“…Miniature O-type vacuum electron devices (VEDs), such as traveling-wave tube (TWT), are very promising as compact sources of high-power coherent…”
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Gain Analysis of a 0.2-THz Traveling-Wave Tube With Sheet Electron Beam and Staggered Grating Slow Wave Structure by Karetnikova, Tatiana A., Rozhnev, Andrey G., Ryskin, Nikita M., Fedotov, Alexey E., Mishakin, Sergey V., Ginzburg, Naum S.

“…Results of numerical simulation of a miniaturized sub-THz traveling-wave tube amplifier with sheet electron beam and planar grating slow wave structure (SWS)…”
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Development and Modeling of a V-Band Traveling-Wave Tube With a Microstrip Meander-Line Slow-Wave Structure by Ryskin, Nikita M., Starodubov, Andrey V., Kozhevnikov, Ilya O., Torgashov, Roman A., Galushka, Viktor V., Navrotsky, Igor A., Nozhkin, Dmitry A., Serdobintsev, Alexey A., Rozhnev, Andrey G.

“…In this paper, we present the results aimed at development of a miniaturized traveling-wave tube (TWT) amplifier with a microstrip meander-line (MML) slow-wave…”
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Injection Locking of Different Axial Modes in the Second-Harmonic THz-Band Gyrotron by Rodina, Arina A., Melnikova, Maria M., Rozhnev, Andrey G., Ryskin, Nikita M.

“…Injection locking of the 0.4-THz second-harmonic gyrotron by an external signal is studied by self-consistent numerical simulation. The locking of the…”
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Planar Microstrip Slow-Wave Structure for Low-Voltage V-Band Traveling-Wave Tube With a Sheet Electron Beam by Ryskin, Nikita M., Rozhnev, Andrey G., Starodubov, Andrey V., Serdobintsev, Alexey A., Pavlov, Anton M., Benedik, Andrey I., Torgashov, Roman A., Torgashov, Gennadiy V., Sinitsyn, Nikolay I.

“…Slow-wave structure (SWS) is a core part of a traveling-wave-tube (TWT) amplifier. In this letter, the planar microstrip meander SWS on a dielectric substrate…”
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Self-Consistent Simulation of the Second-Harmonic 0.4-THz Gyrotron with Delayed Reflection by Melnikova, Maria M., Rodina, Arina A., Rozhnev, Andrey G., Ryskin, Nikita M.

“…In this paper, we present the results of time-domain self-consistent simulation of the second-harmonic 0.394-THz gyrotron with delayed reflection. We…”
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Multiple-Tunnel Meander-Line Slow-Wave Structure for a High-Power Millimeter-Band Traveling-Wave Tube by Torgashov, Roman A., Starodubov, Andrey, Navrotskiy, Igor A., Titov, Vladimir N., Emelyanov, Valeriy V., Rozhnev, Andrey G., Ryskin, Nikita M.

“…In this paper, we present the results of design and development of the multiple-tunnel meander-line slow-wave structure (SWS) for a high-power traveling-wave…”
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Self-Consistent Calculation of Start-Oscillation Conditions in a Gyrotron with Reflections by Melnikova, Maria M., Rodina, Arina A., Rozhnev, Andrey G., Ryskin, Nikita M.

“…The method for calculation of start-oscillation conditions based on the stationary theory of a gyrotron with non-fixed (self-consistent) axial profile of the…”
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