Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A metal grid array type c-band virtual cathode oscillator filled in a waveguide

A metal grid and metal filling technology, which is applied to the cathode of the transit time type electron tube, the transit time type electron tube, the cooling method of the transit time type electron tube, etc. Low frequency, virtual cathode is difficult to repeat frequency emission, etc., to achieve the effect of enhancing microwave conversion efficiency, reducing self-magnetism, and structural impact resistance

Active Publication Date: 2021-10-29
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the actual application of ordinary virtual cathodes, the anode generally uses metal mesh to guide the cathode to emit high-current electron beams. In this process, due to the impact of strong current and the increase of transient energy, the anode mesh is extremely prone to ablation
As a result, it is difficult for the virtual cathode to carry out repeated frequency emission, and the damage of the anode network affects the performance index of the microwave output, making the microwave power output efficiency low

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
  • A metal grid array type c-band virtual cathode oscillator filled in a waveguide
  • A metal grid array type c-band virtual cathode oscillator filled in a waveguide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a metal grid array type C-band virtual cathode oscillator filled in a waveguide in this embodiment includes a metal circular waveguide, and a cathode coaxial with the metal circular waveguide is arranged at one end of the metal circular waveguide, and the electron beam emitting end of the cathode is a circular surface ; A first metal grid and a metal grid array are sequentially arranged in the metal circular waveguide along the electron beam transmission direction, and the metal grid array is composed of multiple groups of metal grids periodically arranged;

[0029] The distance between the first metal grid and the metal grid array is slightly larger than the distance between the first metal grid and the cathode; the distance between the first metal grid and the metal grid array is 1.65cm, and the metal grid in the metal grid array The arrangement period is 1.79cm; the first metal grid and each group of metal grids in the metal grid array are ...

Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 is that the arrangement period of the metal grids in the metal grid array is 3.57 cm, and the microwave conversion efficiency is 17%.

Embodiment 3

[0035] The difference between this embodiment and Embodiment 1 is that the arrangement period of the metal grids in the metal grid array is 2.68 cm, and the microwave conversion efficiency is 18%.

[0036] In summary, the metal grid array type C-band virtual cathode oscillator filled in the waveguide of the present invention has a shock-resistant structure and fast heat dissipation, which is very suitable for electron beam repetition frequency emission; the self-magnetism of the beam is reduced, The stability of the virtual cathode is improved; the microwave conversion efficiency of the virtual cathode is enhanced.

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

No PUM Login to View More

Abstract

The invention discloses a metal grid array type C-band virtual cathode oscillator filled in a waveguide, which comprises a metal circular waveguide, a cathode coaxial with the metal circular waveguide is arranged at one end of the metal circular waveguide; A metal grid and a metal grid array, the metal grid array is composed of multiple groups of metal grids arranged periodically; the distance between the first metal grid and the metal grid array is slightly smaller than the distance between the first metal grid and the cathode Large; the distance between the first metal grid and the metal grid array is 1.65cm, and the arrangement period of the metal grid in the metal grid array is 1 / 4 to 1 / 2 of the wavelength of the radiated microwave; each group of metal grids consists of a diameter It consists of 11 metal sheets arranged at intervals; the cathode emits electron beams that are transmitted in the oscillator, and the radiation generates C-band high-power microwaves with a wavelength of 7.14cm. The metal grid array type C-band virtual cathode oscillator filled in the waveguide of the present invention has the advantages of impact resistance, fast heat dissipation, and is suitable for electron beam repetition frequency emission.

Description

technical field [0001] The invention relates to a metal grid array type C-band virtual cathode oscillator filled in a waveguide, which belongs to the technical field of high-power microwave devices. Background technique [0002] High-power microwave refers to electromagnetic waves with a frequency in the range of 1-300 GHz and a peak power above 100 MW. With the development of pulse power technology and plasma physics, high-power microwave technology has also developed rapidly, especially in the development of high-power microwave sources has made great progress, there have been many different types of high-power microwave source. In some application fields, it is necessary to reduce the volume and weight by removing the external magnetic field system, so as to realize the miniaturization of high-power microwave devices, such devices include virtual cathodes, magnetic insulated wire oscillators, separated cavity oscillators and super post-accelerator tubes. Virtual cathode...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/00H01J23/04H01J23/24H01J25/02
CPCH01J23/005H01J23/04H01J23/24H01J25/02
Inventor 张运俭丁恩燕
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com