Rasterization dielectric lens with high power capacity

A dielectric lens, high-power technology, applied in electrical components, circuits, waveguide-type devices, etc., can solve the problems of pulse shortening, easy breakdown, and insufficient transmission efficiency, and achieve power capacity improvement, low outgassing rate, and pulse shortening. reduced effect

Inactive Publication Date: 2017-02-22
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing high-power microwave transmitting antenna output window at the medium output window-vacuum and medium output window-air interfaces that are easy to break down, resulting in insufficient transmission efficiency and pulse shortening, and provide a Gridded dielectric lens with high power capacity, high breakdown threshold and high transmission efficiency and method for making same

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  • Rasterization dielectric lens with high power capacity
  • Rasterization dielectric lens with high power capacity
  • Rasterization dielectric lens with high power capacity

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Embodiment Construction

[0061] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0062] Specific implementation example one:

[0063] Aiming at 1.575GHz high-power microwave output, the invention designs a circular waveguide grating dielectric lens. The structural parameter of the conical horn antenna is that the diameter at the entrance is D 1 =188mm, the diameter of the outlet is Ra=500mm. like Figure 7 and Figure 8 As shown in the schematic diagram of the circular waveguide grating dielectric lens structure, while the metal grids are arranged periodically, the lengthwise boundary of each metal grid is the same as the diameter Ra at the exit of the conical horn antenna, so as to ensure that the metal grids are in contact with the antenna wall. Good electrical contact, which is conducive to conducting the excess electrons absorbed by the metal grid to the transmitting antenna flange and into the grounding point; the...

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Abstract

The invention relates to a rasterization dielectric lens used as a microwave output window in the technical field of high-power microwaves, in particular to a rasterization dielectric lens working with high power capacity. To overcome the defects that an existing high-power microwave transmitting antenna output window is prone to being punctured in medium output window-vacuum and medium output window-air interfaces, consequently, the transmission efficiency is not high enough, and the pulse is shortened, the rasterization dielectric lens high in power capacity, puncture threshold value and transmission efficiency and a manufacturing method of the rasterization dielectric lens are provided. The rasterization dielectric lens is composed of N metal grid bars and a medium output window. The N metal grid bars are periodically arranged in the medium output window at a certain interval p through a medium output window thickness direction penetrating manner. Due to the fact that the metal grid bars are adopted on the surface of the dielectric lens for partition, the secondary electron emissivity of the rasterization dielectric lens is smaller, the power capacity is greatly improved, the transmission efficiency is high, the phenomenon of pulse shortening is greatly reduced, and the rasterization dielectric lens can be applied to a high-power microwave output system.

Description

technical field [0001] The invention relates to a gridded dielectric lens used as a microwave output window in the technical field of high-power microwaves, in particular to a gridded dielectric lens working at high power capacity. Background technique [0002] In recent years, the attractive prospect of high-power microwave (high-power microwave refers to electromagnetic waves with a peak power greater than 100MW and a frequency between 1 and 100GHz) in many fields has attracted widespread attention and a large amount of research investment in many countries, and has achieved great results. great technological progress. At present, high-power microwaves have been used in civil and military fields such as energy, medical treatment, and environmental protection. [0003] The application requirements of high power microwave determine the development of high power microwave technology towards high peak power, high average power, long pulse, high repetition frequency and high e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/08
CPCH01P1/08
Inventor 李国林樊玉伟邱永峰舒挺杜广星
Owner NAT UNIV OF DEFENSE TECH
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