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A device and method for increasing the breakdown threshold of a high-power microwave transmission device

A high-power microwave and transmission device technology, applied in waveguide-type devices, waveguides, electrical components, etc., can solve the problems of HPM radiation power bottleneck, limit system power capacity, etc., and achieve the effect of increasing the transmission breakdown threshold and increasing the threshold.

Inactive Publication Date: 2017-12-05
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

The strong electromagnetic field breakdown of the HPM generation, transmission and launch system severely limits the power capacity of the system, which has become the bottleneck of HPM technology progress and an international technical challenge
In particular, the breakdown in the HPM transmission system is the bottleneck of the HPM radiated power

Method used

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  • A device and method for increasing the breakdown threshold of a high-power microwave transmission device
  • A device and method for increasing the breakdown threshold of a high-power microwave transmission device
  • A device and method for increasing the breakdown threshold of a high-power microwave transmission device

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Embodiment Construction

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] In the present invention, firstly, on the inner metal surface of the circular waveguide, a magnetron sputtering method is used to form a composition of Ti with a grain size of 100 nanometers. a Zr b V c hf d The porous alloy material thin film, the nanoporous alloy material can reduce the secondary electron emission yield of the circular waveguide wall in the high-power microwave experiment after baking activation and repetition frequency aging in the vacuum background, and can absorb the device in the experiment. The gas escaping from the wall maintains the high vacuum degree inside the microwave system in the experiment, prevents the occurrence of breakdown, and improves the transmission breakdown threshold.

[0031] Since the nanoporous alloy material will be passivated by adsorbing a lot of gas when exposed to the atmosphere, it is necessary to reheat the c...

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Abstract

The invention discloses a high-power microwave transmission device and method for a high breakdown threshold value. The device comprises a circular waveguide with the inner surface plated with a nanometer porous alloy material, and movable gate type vacuum stop valves are arranged at the two ends of the circular waveguide; the circular waveguide is internally plated with the nanometer porous alloy material, the waveguide and gas in the microwave system can be adsorbed, surface plasma formation under the high-power microwave action is inhibited, and the high-power microwave system breakdown threshold value is increased. For the movable gate type vacuum stop valves, an innovative dynamic vacuum seal technology is used, the internal vacuum degree of a microwave system or the circular guide can be kept, the phenomenon that due to the fact that the nanometer porous alloy material plated on the inner surface is exposed in the atmosphere, passivation is caused, the problem that the nanometer porous alloy material plated on the surface is passivated and repeatedly activated is avoided, and the service life of the equipment under the high breakthrough threshold value is prolonged.

Description

technical field [0001] The invention belongs to the technical field of high-power microwaves, and in particular relates to a method for improving the breakdown threshold of a high-power microwave transmission device. Background technique [0002] High-power microwave (HPM) has very broad application prospects in scientific research, civil and defense fields. The breakdown of the strong electromagnetic field of the HPM generation, transmission and launch system severely limits the power capacity of the system, which has become the bottleneck of HPM technology progress and an international technical challenge. In particular, breakdown in HPM delivery systems is a bottleneck for HPM radiated power. Among them, the gas pressure in the device wall of the transmission system increases due to the gas escaping induced by electrons, the vacuum degree of the microwave system decreases, and the increase of the plasma density avalanche is an important reason for the breakdown. For deta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/00H01P3/00C23C14/35C23C14/16
CPCC23C14/165C23C14/35H01P1/00H01P3/00
Inventor 常超桂猷猷伍成邵浩孙钧
Owner NORTHWEST INST OF NUCLEAR TECH
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