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.
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13 April 2015
Research Article|
April 16 2015
High-power microwave amplifier based on overcritical relativistic electron beam without external magnetic field
S. A. Kurkin
;
S. A. Kurkin
a)
1
Saratov State University
, Astrakhanskaja 83, Saratov 410012, Russia
2
Saratov State Technical University
, Politechnicheskaja 77, Saratov 410028, Russia
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N. S. Frolov;
N. S. Frolov
1
Saratov State University
, Astrakhanskaja 83, Saratov 410012, Russia
2
Saratov State Technical University
, Politechnicheskaja 77, Saratov 410028, Russia
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A. O. Rak;
A. O. Rak
2
Saratov State Technical University
, Politechnicheskaja 77, Saratov 410028, Russia
3
Belarusian State University of Informatics and Radioelectronics
, Minsk, Belarus
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A. A. Koronovskii;
A. A. Koronovskii
1
Saratov State University
, Astrakhanskaja 83, Saratov 410012, Russia
2
Saratov State Technical University
, Politechnicheskaja 77, Saratov 410028, Russia
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A. A. Kuraev;
A. A. Kuraev
3
Belarusian State University of Informatics and Radioelectronics
, Minsk, Belarus
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A. E. Hramov
A. E. Hramov
1
Saratov State University
, Astrakhanskaja 83, Saratov 410012, Russia
2
Saratov State Technical University
, Politechnicheskaja 77, Saratov 410028, Russia
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a)
Electronic mail: KurkinSA@gmail.com
Appl. Phys. Lett. 106, 153503 (2015)
Article history
Received:
March 19 2015
Accepted:
April 09 2015
Citation
S. A. Kurkin, N. S. Frolov, A. O. Rak, A. A. Koronovskii, A. A. Kuraev, A. E. Hramov; High-power microwave amplifier based on overcritical relativistic electron beam without external magnetic field. Appl. Phys. Lett. 13 April 2015; 106 (15): 153503. https://doi.org/10.1063/1.4918713
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