Unlock instant, AI-driven research and patent intelligence for your innovation.

Relativistic magnetron with double-end emission cathode structure

A relativistic magnetron and emission cathode technology, applied in the microwave field, can solve problems such as device efficiency reduction and electronic energy loss, and achieve the effect of improving output power and power conversion efficiency, and being easy to implement.

Active Publication Date: 2021-06-01
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experiments have shown that the electron passing rate of the anode foil is usually not more than 70%, and the electrons that fail to pass through the anode foil will not enter the high-frequency structure to participate in the injection wave interaction, so the introduction of the anode foil will cause the loss of electron energy. Device efficiency decreases

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Relativistic magnetron with double-end emission cathode structure
  • Relativistic magnetron with double-end emission cathode structure
  • Relativistic magnetron with double-end emission cathode structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to better illustrate the purpose, advantages and technical ideas of the present invention, the present invention will be further elaborated below in conjunction with specific embodiments. It should be noted that the specific examples given below are only for the purpose of explaining the present invention in detail, and do not limit the present invention.

[0028] The cathode structure in this embodiment is as figure 2 As shown, it includes an upstream cathode end cap 3-1, an upstream cathode 3-2, a central connection conductor 3-3, a downstream cathode 3-4, and a downstream cathode end cap 3-5. In this embodiment, the upstream cathode 3-2, and The downstream cathode 3-4 adopts a hollow conical structure, the upstream cathode end cap 3-1 is cylindrical with rounded corners at the right end, and the downstream cathode end cap 3-5 is also cylindrical with rounded corners at both ends.

[0029] The upstream hollow conical cathode 3-2 has the same structure as th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Radiusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a relativistic magnetron with a double-end emission cathode structure, and belongs to the technical field of microwaves. The relativistic magnetron is of a full-cavity axial extraction structure and comprises an anode shell, a high-frequency structure, an energy coupling slot, a fan-shaped waveguide, a coaxial waveguide, a TEM-TM01 mode converter, an output circular waveguide, a guide magnetic field coil and a cathode structure, and the cathode structure comprises two cathode end caps, two symmetrically-arranged emission cathodes and a center connecting conductor. According to the invention, the virtual cathode scheme is adopted, so that problems of pulse shortening, frequency drift, efficiency reduction and the like caused by plasmas generated by explosive emission in an interaction interval can be effectively solved, and the output power and the power conversion efficiency of the relativistic magnetron can be effectively improved.

Description

technical field [0001] The invention belongs to the field of microwave technology, and in particular relates to a cathode structure applied to a relativistic magnetron. Background technique [0002] Relativistic magnetrons are widely used in various high-power microwave systems due to their simple and compact structure and high conversion efficiency. However, high-power microwave devices have always had the problem of pulse shortening. Pulse shortening refers to the phenomenon that the output microwave pulse is terminated earlier than the electron beam pulse that generates the high power microwave. In response to the long pulse output requirements of high-power microwave sources, research on virtual cathode relativistic magnetrons is being vigorously carried out at home and abroad. [0003] An existing relativistic magnetron based on virtual cathode technology such as figure 1 Shown (An efficient all cavityaxial extractionrelativistic magnetron with virtual cathode[J],R.C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01J23/05H01J23/09H01J25/55
CPCH01J23/05H01J23/09H01J25/55H01J2225/55H01J2223/05H01J2223/09
Inventor 程仁杰李天明汪海洋胡标李浩周翼鸿
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA