A relativistic backward wave oscillator with a modulating resonance reflector

Korovin, S. D.; Rostov, V. V.; Totmeninov, E. M.

doi:10.1134/1.1931784

Cited by 38 publications

(13 citation statements)

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“…Moreover, the reflector premodulates the electron beam before it travels into the SWS [13]. Researchers have obtained the numerical results of 0.75-GW microwave power and the efficiency of 40% using the nonuniform SWS and the reflector [14].…”

Section: Reflector Functionmentioning

confidence: 99%

“…According to the previous study, the effect of the reflector on the efficiency depends on the depth of modulation and on the position of the reflector relative to SWS (affecting the relative phase of the premodulated beam to that of the synchronous wave) [14]. The axial electric field of the reflector, which acts as the premodulating field, can be investigated analytically.…”

Section: Designs Of Reflectors For Crbwomentioning

confidence: 99%

“…This will be proved by the following numerical simulation. The optimizing of the position of the reflector relative to SWS, which is considered as the second factor of the reflector [14], is completed by the numerical simulation in the next section.…”

Section: B Improved Reflectormentioning

confidence: 99%

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A New Reflector Designed for Efficiency Enhancement of CRBWO

Teng

Liu

Shao

et al. 2009

IEEE Trans. Plasma Sci.

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A new reflector consisting of the inner and outer conductors is introduced into the coaxial relativistic backward wave oscillator for the first time through optimizing the distribution of the electric field and distance between the reflector and the slow wave structure. The improved reflector can excite the superposition of the axial electric fields to benefit the electron premodulation. The improved reflector is investigated by the particle-in-cell numerical simulation. A result of 43% power efficiency, 1.0-GW power, and 7.3-GHz operation frequency is obtained under the diode voltage 530 kV and current 4.4 kA.Index Terms-Coaxial relativistic backward wave oscillators (CRBWOs), high-power microwave (HPM), interaction efficiency, premodulation.

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Section: Reflector Functionmentioning

confidence: 99%

Section: Designs Of Reflectors For Crbwomentioning

confidence: 99%

See 1 more Smart Citation

A New Reflector Designed for Efficiency Enhancement of CRBWO

Teng

Liu

Shao

et al. 2009

IEEE Trans. Plasma Sci.

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“…11 The reflector, which premodulates the electron beam before it enters the SWS, 12 is proven to be of benefit to the increase of the output efficiency. 13 The reflector prevents microwave from propagating to the diode region and disturbing the transmission of the electron beam. 14 Compared with the cutoff neck, the reflector supports the oversized structure, which helps to enhance the power capacity.…”

Section: Introductionmentioning

confidence: 99%

Starting current of coaxial relative backward wave oscillator

et al. 2010

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This paper is devoted to study the starting current of the coaxial relativistic backward wave oscillator ͑CRBWO͒ using a simple physical model that employs the eigenmodes of the enclosed resonant cavity and the external quality factor of the open cavity Q. The agreement between the theoretical and simulation results is presented. It is found that CRBWO is suffering from the mode competition during the startup of the oscillation due to the wide interaction region over the range of the longitudinal wavenumbers.

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“…In X-band, raising of the generated power up to the level of ≈ 1 GW results in the necessity for enlarging the diameter D of the slow wave structure (SWS) in comparison with the wavelength λ to prevent the microwave breakdown [1]. The reduction of maximal electric fields at the SWS has been achieved in the BWO with resonant reflector at D ≈ 1.5 λ [2] which allowed us to increase the output microwave power up to 3 GW at the pulse width of 20 ns [1,3]. The further grow of D leads to the mode competition.…”

Section: Introductionmentioning

confidence: 99%