High-power microwave amplifier based on overcritical relativistic electron beam without external magnetic field

Journal Article · Mon Apr 13 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4918713· OSTI ID:22398909

Koronovskii, A. A. ^[1]; Frolov, N. S.; Hramov, A. E. ^[2]; Rak, A. O. ^[3]; Kuraev, A. A. ^[3]

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1. Saratov State University, Astrakhanskaja 83, Saratov 410012 (Russian Federation)
2. Saratov State Technical University, Politechnicheskaja 77, Saratov 410028 (Russian Federation)
3. Belarusian State University of Informatics and Radioelectronics, Minsk (Belarus)

The high-power scheme for the amplification of powerful microwave signals based on the overcritical electron beam with a virtual cathode (virtual cathode amplifier) has been proposed and investigated numerically. General output characteristics of the virtual cathode amplifier including the dependencies of the power gain on the input signal frequency and amplitude have been obtained and analyzed. The possibility of the geometrical working frequency tuning over the range about 8%–10% has been shown. The obtained results demonstrate that the proposed virtual cathode amplifier scheme may be considered as the perspective high-power microwave amplifier with gain up to 18 dB, and with the following important advantages: the absence of external magnetic field, the simplicity of construction, the possibility of geometrical frequency tuning, and the amplification of relatively powerful microwave signals.

• OSTI ID: 22398909
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 106; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
CATHODES
ELECTRON BEAMS
GAIN
MAGNETIC FIELDS
MICROWAVE AMPLIFIERS
MICROWAVE RADIATION
RELATIVISTIC RANGE
SIGNALS
TUNING