Gradually-amplified slow-wave-structure microwave oscillator outputting high power microwave

Abstract

The invention discloses a gradually-amplified slow-wave-structure microwave oscillator outputting high power microwaves. A slow-wave structure of the microwave oscillator is distributed in a conical shape. The microwave oscillator comprises a guide magnet, wherein the guide magnet comprises a cylinder hollow cavity, and a cathode, the slow-wave structure and a coaxial inner conductor are arranged inside the guide magnet coaxially. The slow-wave structure of the microwave oscillator disclosed by the invention is gradually amplified and distributed in a conical shape, an electron beam is guided into an interaction chamber of the slow-wave structure gradually-amplified high power microwave oscillator from the cathode through axial and radial distribution of a guide magnetic field; an intense electron beam is closely adhered to the surface of the slow-wave structure for transmission under the constraint of the guide magnetic field; and the coaxial inner conductor in a microwave output cavity enhances beam-wave interaction and increases microwave output efficiency, and can be used for adjusting size of an output window, thereby ensuring compactness of the microwave output structure, adjusting size structure of the coaxial inner conductor properly, and achieving high-efficiency microwave output under low magnetic field guidance.

Description

technical field [0001] The invention relates to the technical field of high-power microwave devices, in particular to a microwave oscillator with a slow-wave structure whose output gradually amplifies high-power microwaves. Background technique [0002] Research on high-power microwave devices is gradually developing in the direction of high power and high efficiency. With the development of high-power microwave research, higher and higher requirements are put forward for the total system efficiency of high-power microwave sources. In the existing high-power microwave sources, high-impedance devices have high beam conversion efficiency, but generally require a strong guiding magnetic field, especially when the microwave source operates at a repetition rate, a bulky, high-energy-consuming Solenoid magnet system or use troublesome superconducting magnet system; while low impedance devices require a pulsed power source with higher output power, and the beam conversion efficien...

AI Technical Summary

Problems solved by technology

In existing high-power microwave sources, high-impedance devices have high beam conversion efficiency, but generally require a strong guiding magnetic field, especially when the microwave source operates at a repetition rate, a bulky, high-energy-consuming Solenoid magnet system or use troublesome superconducting magnet system; while low impedance devices require a pulsed power source with higher output power, the beam conversion efficiency of the device is limited

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