Periodic Relativistic Backward Wave Oscillator with a Modulating
Resonant Reflector
E. M. Tot’meninov*, P. V. Vykhodtsev, A. V. Gunin, A. I. Klimov, and V. V. Rostov
Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Akademicheskii pr. 4, Tomsk, 634055 Russia
*e-mail: totm@lfe.hcei.tsc.ru
Received April 16, 2013
Abstract—An efficient microwave oscillator (320 MW and 7.9 GHz) that generates microwave pulses with a
duration of 90 ns is developed using optimization of an electron–wave system and decompression of the longi-
tudinal magnetic field with a maximum induction of 0.62 T in the region of an explosive-emission cathode and
a lower field (0.36 T) with respect to cyclotron resonance in the slow-wave structure. In a packet (up to 10 ns)
repetitively-pulsed (100 Hz) regime, the maximum conversion efficiency of the electron-beam power to micro-
wave radiation is 27%. The mean energy of the radiation pulse (23 J) is about 18% of the pulse energy of high-
voltage oscillator.
10.1134/S1063784214030268
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