Nanosecond hybrid Modulator for the fast-repetitive driving of X-band, gigawatt-power microwave source

• Published in: IEEE transactions on plasma science Vol. 33; no. 4; pp. 1220 - 1225
• Main Authors: Luybutin, S.K., Rukin, S.N., Sharypov, K.A., Shpak, V.G., Shunailov, S.A., Slovikovsky, B.G., Ulmaskulov, M.R., Yalandin, M.I., Korovin, S.D., Rostov, V.V.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2005; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Backward wave oscillator; Electromagnetic fields; electron beam; Electron beams; Focusing; Hybridization; Microwave communications; Microwave generation; Microwave oscillators; Microwaves; Modulators; Nanocomposites; Nanomaterials; Nanostructure; Optical modulation; Oscillators; Output; Power generation; Pulse compression methods; Pulse modulation; semiconductor opening switch; spark gap; Sparks; Testing; X-band
• ISSN: 0093-3813; 1939-9375
• DOI: 10.1109/TPS.2005.852359

Results of tests of a fast-repetitive nanosecond modulator with a peak output power of 3 GW are presented. It comprises of a type S-5N charging driver, a power compressor based on a pulsed forming line, and a gas spark gap. The modulator has been designed for the formation of high-current electron beams and high-power microwave generation in a pulsed-repetitive regime. Excitation of 10-GHz microwave pulses /spl sim/1 ns long in a relativistic backward-wave oscillator with an elongated periodic slow-wave system has been studied. Optimization of the regime of interaction between electromagnetic fields and particles provided an average power of microwave radiation in the burst-repetitive mode (1 s; /spl sim/700 Hz) of up to 2.5 kW at a focusing magnetic field (/spl sim/0.6 T) below the cyclotron resonance region. The peak output power of the oscillator exceeded 2 GW.