Method for achievement of a multigigawatt peak power by compressing microwave pulses of a relativistic backward-wave oscillator in a helical waveguide

V.L. Bratman, G.G. Denisov, S.V. Samsonov, A.W. Cross, K. Ronald, A.D.R. Phelps

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We show theoretically that the use of a circular oversized waveguide with a helically corrugated internal surface as a dispersive medium ensures efficient compression of frequency-modulated microwave pulses up to peak powers of about 10 GW. According to the calculations, a pulse with the required frequency modulation can be obtained in a relativistic backward-wave oscillator operated in the 3-cm wavelength range and producing an output power of hundreds of megawatts. In a demonstration experiment, a 80-ns pulse of kilowatt power with frequency modulation in a 5% band was compressed to a 1.5-ns pulse with a 25-fold power amplification.
Original languageEnglish
Pages (from-to)36-48
Number of pages13
JournalRadiophysics and Quantum Electronics
Issue number1
Publication statusPublished - 1 Jan 2007



  • circular oversized waveguide
  • microwave pulses
  • frequency modulation

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