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Your search keyword '"Starodubov, Andrey V."' showing total 43 results
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43 results on '"Starodubov, Andrey V."'

1. First experimental observation of generalized synchronization phenomena in microwave oscillators

Author

Dmitriev, Boris S., Hramov, Alexander E., Koronovskii, Alexey A., Starodubov, Andrey V., Trubetskov, Dmitriy I., and Zharkov, Yurii D.

Subjects
Nonlinear Sciences - Chaotic Dynamics, Physics - Plasma Physics
Abstract

In this Letter we report for the first time on the experimental observation of the generalized synchronization regime in the microwave electronic systems, namely, in the multicavity klystron generators. A new approach devoted to the generalized synchronization detection has been developed. The experimental observations are in the excellent agreement with the results of numerical simulation. The observed phenomena gives a strong potential for new applications requiring microwave chaotic signals., Comment: 6 figures, 4 pages

Published
2013
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9. A Technique for Planar Integration of Components of W-Band Backward-Wave Oscillator to Eliminate Misalignment

Author

Kumar, Niraj, Vishant, Ranjan, Om, Abhishek, Anand, Starodubov, Andrey V., Titov, Vladimir N., and Ryskin, Nikita M.

Abstract

The alignment within the required tolerance between components like electron beam source, beam-wave interaction structure and spent beam collector is a major challenge in the realization of the high-power vacuum-tube sub-THz source. To overcome this major issue, a novel integrated W-band beam-wave interaction circuit along with spent beam collector and beam adapter region has been designed and developed on two planar metallic plates itself for the first time. It accomplished the level of required alignment of different components of a sub-THz source. This interaction circuit along with beam adapter region and spent beam collector has been developed on a single plate. These structures have been developed using optimized micro-milling techniques with achieved dimensional deviation less than $ < 7~\mu \text{m}$ . The average surface roughness is found to be around 100 nm, which is much less than the skin depth in the W band.

Published
2023
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12. Development of microfabricated planar slow-wave structures on dielectric substrates for miniaturized millimeter-band traveling-wave tubes

Author

Ryskin, Nikita M., primary, Torgashov, Roman A., additional, Starodubov, Andrey V., additional, Rozhnev, Andrey G., additional, Serdobintsev, Alexey A., additional, Pavlov, Anton M., additional, Galushka, Viktor V., additional, Bessonov, Dmitry A., additional, Ulisse, Giacomo, additional, and Krozer, Viktor, additional

Published
2021
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17. Comparison of nanoseconds and picoseconds laser ablation for microfabrication of planar slow-wave structures for D-band vacuum electronic devices with sheet electron beam

Author

Starodubov, Andrey V., primary, Serdobintsev, Alexey A., additional, Kozhevnikov, Ilya O., additional, Pavlov, Anton M., additional, Galushka, Viktor V., additional, Torgashov, Roman A., additional, Bessonov, Dmitry A., additional, Galkin, Alexander, additional, Ryskin, Nikita M., additional, and Sakharov, V. N., additional

Published
2020
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21. Pseudospark-Driven High-Current Miniaturized Voltage-Tunable Sheet-Electron-Beam Source.

Author

Kumar, Niraj, Abhishek, Anand, Vishant, Singhal, Kushagra, Gurjar, Nikita, Jain, Sahil, Starodubov, Andrey V., and Ryskin, Nikita M.

Subjects
ELECTRON beams, CATHODES, ELECTRON sources, ELECTRIC breakdown, BREAKDOWN voltage
Abstract

For high-power and compact sub-terahertz (THz) sources, a high-current electron beam is a crucial component. In this article, a miniaturized sheet-electron-beam source has been developed for generation of the high-current-density electron beam. It consists of a hollow cathode with a 3-mm diameter circular aperture, an anode with a 1.25 mm $\times0.25$ mm rectangular aperture, and an interelectrode three-gap region with optimized dimension. The developed electron beam source has been operated in self-breakdown conditions for applied gap voltage ranging between 10 and 30 kV. The sheet electron beam has been successfully propagated for nearly 45 mm inside the drift space without the assistance of an external magnetic field due to the space charge neutralization effect. It has demonstrated good transmission characteristics with more than 50-A beam current and beam current loss of around 25%. [ABSTRACT FROM AUTHOR]

Published
2021
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