Coaxial-extraction long-pulse relativistic backward-wave oscillator

A coaxial extraction structure, long pulse technology, applied in traveling wave tubes, collectors of transit time electron tubes, circuit components of transit time electron tubes, etc., can solve the problem of power conversion efficiency, output microwave pulse width, plasma It can improve the efficiency of beam action, weaken the shortening of microwave pulse width, and improve the Q value.

Active Publication Date: 2013-06-05
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: the present invention provides a coaxial extraction long pulse relativistic return wave oscillator, which overcomes the difficulty of taking into account the high power conversion efficiency and long output microwave pulse width of t

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  • Coaxial-extraction long-pulse relativistic backward-wave oscillator
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  • Coaxial-extraction long-pulse relativistic backward-wave oscillator

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Embodiment Construction

[0029] figure 1 It is a schematic structural diagram of the long-pulse RBWO disclosed in prior art 1. The structure is composed of cathode base 101, cathode 102, anode outer cylinder 103, cut-off neck 104, slow wave structure 105, tapered waveguide 106, output waveguide 107, solenoid magnetic field 108, and the whole structure is rotationally symmetrical about the central axis. The slow-wave structure 5 is composed of 5 slow-wave blades, the inner surface of each slow-wave blade is a trapezoidal structure, the four slow-wave blades on the left are identical, and the maximum outer radius is R 3 , the minimum inner radius is R 4 ;The maximum outer radius of the fifth slow-wave blade is R 3 , the minimum inner radius is R 5 , with an average radius of R 6 , satisfying R 3 > R 6 > R 5 > R 4 , the length L of the 5 slow-wave blades 1 same. The output waveguide 107 has an inner radius of R 7 The circular waveguide uses the inner wall of the waveguide to collect residual e...

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Abstract

The invention relates to a microwave component in the technical field of high power microwave and provides a coaxial-extraction long-pulse relativistic backward-wave oscillator. The coaxial-extraction long-pulse relativistic backward-wave oscillator comprises a cathode base, a cathode, an anode outer cylinder, a cut-off neck, a slow wave structure, a tapered waveguide, an output waveguide, a solenoidal field, a coaxial-extraction structure and a front-arranged reflection cavity. The coaxial-extraction structure is a cylinder. The front-arranged reflection cavity is disposed between the cut-off neck and the slow wave structure. According to the coaxial-extraction long-pulse relativistic backward-wave oscillator, a cylinder is adopted as the coaxial-extraction structure, and therefore the defect that the coaxial-extraction structure with a groove generates plasma is overcome, and meanwhile in the electromagnetic wave mode, function transformation can be carried out and installation can be achieved conveniently. The front-arranged reflection cavity is utilized to replace the cut-off neck so that the resonance characteristic of the front-arranged reflection cavity can be utilized to achieve the effect of the cut-off neck, electron beam scraping or electron beam bombardment of the front-arranged reflection cavity can be avoided, and premodulation of electron beams emitted from the cathode also can be carried out. Therefore, the coaxial-extraction long-pulse relativistic backward-wave oscillator is beneficial for subsequent beam wave interaction and improves power conversion efficiency of the component.

Description

technical field [0001] The invention relates to microwave source devices in the technical field of high-power microwaves, in particular to a relativistic back-wave oscillator RBWO (Relativistic Backward-Wave Oscillator) for coaxial extraction of long pulses. Background technique [0002] In recent years, the attractive prospects of high-power microwaves (usually referring to electromagnetic waves with a peak power greater than 100MW and a frequency between 1 and 300GHz) in many fields have attracted widespread attention from many countries and a large amount of research investment, and have achieved great results. skill improved. At present, a variety of applications of high-power microwaves have been proposed: high-power microwave directed energy weapons, energy supply for satellites and space platforms, launch of small deep-space probes, altitude-changing propulsion systems for orbiters, electronic high-energy radio-frequency accelerators, material processing and processi...

Claims

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Application Information

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IPC IPC(8): H01J25/46H01J23/26H01J23/027
Inventor 葛行军张军靳振兴樊玉伟贺军涛杨建华钟辉煌张建德
Owner NAT UNIV OF DEFENSE TECH
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