Coaxial-extraction long-pulse relativistic backward-wave oscillator

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...

AI Technical Summary

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 the usual RBWO, and solves the problem that the coaxial extraction structure is easy to generate plasma Problems that affect work efficiency, high-efficiency, long-pulse output microwaves are achieved with fewer slow-wave blades, and the microwave source is compact and easy to repeat frequency operation

Images