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A Periodic Dielectric Filled Coaxial High Power Microwave Device

A high-power microwave and dielectric technology, applied to the circuit components of the time-of-flight electron tube, to achieve the effect of improving beam conversion efficiency and enhancing clustering

Active Publication Date: 2020-09-22
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Devices with this structure do not have anti-wave dielectric Cherenkov devices, only traveling-wave dielectric Cherenkov devices

Method used

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  • A Periodic Dielectric Filled Coaxial High Power Microwave Device
  • A Periodic Dielectric Filled Coaxial High Power Microwave Device
  • A Periodic Dielectric Filled Coaxial High Power Microwave Device

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Embodiment 1

[0031]The cathode in the device is made of graphite material, which relies on the electric field force between the cathode and anode to generate a ring-shaped high-current electron beam. The inner diameter of the graphite cathode is 1.5cm and the outer diameter is 1.6cm. Under the guidance of the magnetic field, the annular high-current electron beam enters the coaxial dielectric cavity through the annular injection port for transmission. The guiding magnetic field strength of the electron beam is 0.8T, the voltage is 400kV, and the current is 2kA. The inner diameter of the metal outer cylinder is 2.6cm, and the inner wall of the metal outer cylinder and the coaxial inner conductor are periodically filled with two kinds of dielectrics with different dielectric coefficients. The structural parameters of the coaxial dielectric filled on the inner wall of the metal outer cylinder and the outer wall of the coaxial inner conductor are as follows: The arrangement is exactly the same....

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Abstract

The invention discloses a periodic dielectric-filled coaxial high-power microwave device. The periodic dielectric-filled coaxial high-power microwave device comprises an outer cylinder, wherein the outer cylinder is internally provided with a cathode and a coaxial inner conductor arranged in the axial direction of the outer cylinder; the cathode and the coaxial inner conductor are coaxial; coaxialdielectrics are filled between the outer cylinder and the coaxial inner conductor; the coaxial dielectrics are periodically filled in a staggered manner and are two dielectrics with different dielectric coefficients; the coaxial dielectrics are of an annular structure to form a coaxial dielectric cavity; the coaxial dielectric cavity is divided into an inner coaxial dielectric and an outer coaxial dielectric through the coaxial dielectric cavity; the two dielectrics such as the inner coaxial dielectric and the outer coaxial dielectric are of same arrangement; and an annular high current electron beam emitted by the cathode is guided through a magnetic field for transmission in the coaxial dielectric cavity. According to the device using the structure, total reflection occurs for microwaves in transmitted mediums, so that the cluster of the electron beam is strengthened, and the conversion efficiency of a beam wave is improved.

Description

technical field [0001] The invention belongs to the technical field of high-power microwave devices, in particular to a periodic dielectric-filled coaxial high-power microwave device. Background technique [0002] High-power microwave (HPM) generally refers to electromagnetic waves with a peak power above 100MW and an operating frequency in the range of 1-300GHz. The research and development of high power microwave technology and microwave devices has a history of more than 30 years. In recent years, with the continuous development of pulse power technology and plasma physics, high power microwave technology has developed rapidly, especially in the application of high power microwave sources. Great progress has been made in development. So far, its power level has been increased by several orders of magnitude compared with ordinary microwave sources, and it has been widely used in many scientific fields, thus making high-power microwave a new technology. It relies on modern...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/24H01J23/28
CPCH01J23/24H01J23/28
Inventor 丁恩燕张运俭
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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