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Article
Development and Investigation of a Slow-Wave Structure for a Miniature Multiple-Beam W-Band Traveling Wave Tube
The results of the development of a meander-line slow-wave system (SWS) with metal supports for a miniature high-power W-band traveling-wave tube (TWT) with two sheet electron beams are presented. Using a thre...
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Article
Theoretical Analysis of the Stability of the Single-Mode Generation Regime in the Gyrotron
We discuss the question of the stability of the single-mode generation regime in the gyrotron. An example of a gyrotron with the fixed Gaussian structure of the high-frequency field is used to analyze theoreti...
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Article
A Study of Gyrotron Synchronization in the Hard-Excitation Regime on the Basis of the Modified Quasilinear Model
In this work, we theoretically analyze the gyrotron synchronization by an external harmonic signal. The modified quasilinear model of an externally driven gyrotron, which employs the preliminarily calculated c...
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Article
Technologies for Forming Electrodynamic Structures for Millimeter-Wave and Terahertz Vacuum Microelectronic Devices (Review)
The electrodynamic microstructure technologies for production of millimeter and submillimeter-wave vacuum microelectronic devices are reviewed, including photolithography, deep reactive ion etching, computer n...
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Article
Studies of Small-Size Millimeter-Wave Traveling-Wave Tubes with Multiple Sheet Electron Beams
We present the results of the studies aimed at develo** small-size traveling-wave tubes (TWTs) with multiple sheet electron beams, which operate in the short-wavelength part of the millimeterwaverange. Two v...
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Article
Research and Development of Traveling Wave Tubes with Planar Microstrip Slow-Wave Structures on Dielectric Substrates
In this paper, we present the results of development and research of planar microstrip slow-wave structures (SWSs) on dielectric substrates for miniature low-voltage O-type traveling-wave tubes (TWTs) of the sub-...
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Article
Theoretical Analysis of Frequency Stabilization and Pulling Effects in a Gyrotron with Delayed Reflection
The effect of delayed reflection on frequency stabilization and pulling in a gyrotron oscillator is studied. Simple theoretical formulas for start-oscillation current, oscillation frequency, and frequency stab...
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Article
Influence of the Delay on Mutual Synchronization of Two Coupled Gyrotrons
We study mutual synchronization in a system of two delay-coupled gyrotrons. The results of the bifurcation analysis are presented in the approximation where the delay time is short compared with the oscillatio...
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Article
Dynamics of Multimode Processes at the Leading Edge of the Accelerating-Voltage Pulse in a Gyrotron Driven by an External Signal
We study the oscillation regimes for the model of a gyrotron with a fixed Gaussian longitudinal field structure and three modes of an equidistant spectrum (an operation mode and two satellites symmetrically sp...
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Article
Theoretical and Experimental Study of a Compact Planar Slow-Wave Structure on a Dielectric Substrate for the W-Band Traveling-Wave Tube
A miniature planar meander-type slow-wave structure (SWS) for a W-band traveling-wave tube is studied. Computer simulation of the SWS electrodynamic parameters is performed. A new technology for fabrication of pl...
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Article
Multistability and Complex Oscillatory Regimes in a Microwave Generator with Delayed Reflection from the Load
Peculiarities of the formation of multistability in a microwave generator with delayed reflection from the load have been studied. Characteristic scenarios of the appearance and evolution of multistable states...
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Article
A Subterahertz Multiplier Based on a Traveling Wave Tube with a Sheet Electron Beam
In this paper, we present the results of the study of a multiplier based on a traveling wave tube with a sheet electron beam and slow-wave double-grating structures. Device configurations with the possibility ...
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Article
Self-Similar Character of Generation of Superradiance Pulses in an Electron–Wave Backward Wave Oscillator
The phenomenon of superradiance of electron bunches provides a promising method for generating high-power ultrashort electromagnetic pulses. In the present paper, it is shown that the equations describing the ...
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Article
The mutual synchronization of coupled delayed feedback klystron oscillators
We report on the results of a numerical investigation of the synchronization of two coupled klystron oscillators with an external feedback circuit. Simulation has been carried out using the particle-in-cell me...
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Article
Gyrotron Frequency Stabilization by a Weak Reflected Wave
The possibility of reducing the radiation frequency fluctuations by a factor of 3–5 using a nonresonant or highly resonant weakly reflecting load for the gyrotrons employed in controlled-fusion f...
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Article
Modeling a subterahertz traveling-wave tube with a slow-wave structure of the double grating type and a sheet electron beam
A traveling-wave tube of the millimeter range belonging to the short-wavelength region with a sheet electron beam and a slow-wave structure of the double grating type is studied. Its dispersion characteristics...
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Article
Studying Characteristics of the Slow-Wave System of the Traveling-Wave Tube with a Sheet Electron Beam
We propose a method for calculation of a periodic slow-wave system designed as a double comb immersed into a rectangular waveguide. The approach is based on solving a system of integral equations obtained by t...
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Article
Computer simulation of a two-stage millimeter-wave klystron oscillator
The results of computer simulation of a two-stage millimeter-wave klystron oscillator are reported. The oscillator consists of two closed-loop floating-drift-tube klystrons with the output cavity of one klystr...
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Article
Self-similar modes of amplification and compression of electromagnetic pulses in their interaction with electron flows
Self-similar solutions describing the amplification and compression of ultrashort electromagnetic pulses in their interaction with quasi-stationary electron flows are constructed on the basis of analogy with t...
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Article
The amplification, compression, and self-induced transparency effects for the ultrashort electromagnetic pulses propagating along quasi-stationary electron beams
By analogy with the coherent interaction of short (on the scale of relaxation times) light pulses with inverted, i. e., active, and non-inverted, i. e., passive, two-level quantum systems, we study the possibi...
