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Slow-wave structure of multiple-beam coupling cavity traveling-wave tube and manufacturing method of slow-wave structure

A slow-wave structure and manufacturing method technology, which is applied in the manufacture of discharge tubes/lamps, cold cathodes, electrode systems, etc., can solve the problem of permanent magnet focusing system failure, scrapped traveling wave tubes, and poor electron injection flow rate. and other problems, to achieve the effect of improving the pass rate, work stability, and simple and feasible operation.

Active Publication Date: 2011-08-24
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once a large transverse field appears on the axis of the electron beam, the flow rate of the electron beam will be very poor, resulting in the failure of the permanent magnetic focusing system of the multi-beam coupling cavity traveling wave tube, and finally making the traveling wave tube scrap

Method used

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  • Slow-wave structure of multiple-beam coupling cavity traveling-wave tube and manufacturing method of slow-wave structure
  • Slow-wave structure of multiple-beam coupling cavity traveling-wave tube and manufacturing method of slow-wave structure
  • Slow-wave structure of multiple-beam coupling cavity traveling-wave tube and manufacturing method of slow-wave structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The manufacturing method of the multi-beam coupled cavity traveling wave tube slow wave structure includes the following steps;

[0042] (1) Make the pole shoe and copper ring, so that the thickness d1 of the pole shoe is greater than the thickness d2 of the copper ring;

[0043] (2) Arrange the pole shoes and copper rings prepared in (1) alternately, the coupling grooves arranged on the pole shoes and copper rings are staggered and arranged at 180°, and the pole shoes and copper rings are welded by brazing Connected into a multi-beam coupler chain.

Embodiment 2

[0045] The manufacturing method of the multi-beam coupled cavity traveling wave tube slow wave structure includes the following steps;

[0046] (1) Make the pole shoe and copper ring, so that the thickness d1 of the pole shoe is greater than the thickness d2 of the copper ring; the thickness d1 of the pole shoe is 0.4 times the period L of the slow wave system of the traveling wave tube, and d1 is 1.2 mm; the thickness of the copper ring d2 is 0.3 times of the period L of the slow wave system of the traveling wave tube, and d2 is 0.9mm;

[0047] (2) Process the coupling grooves of the pole shoe and the copper ring in (2), so that the angle of the coupling groove of the pole shoe is greater than the angle of the coupling groove of the copper ring; the angle of the coupling groove on the pole shoe is 56° °, the angle of the coupling groove on the copper ring is 52.2°, so that the working frequency band of the traveling wave tube does not shift;

[0048] (3) Process the loading ...

Embodiment 3

[0052] The manufacturing method of the multi-beam coupled cavity traveling wave tube slow wave structure includes the following steps;

[0053] (1) Make the pole shoe and copper ring, so that the thickness d1 of the pole shoe is greater than the thickness d2 of the copper ring; the thickness d1 of the pole shoe is 0.5 times the period L of the slow wave system of the traveling wave tube, and d1 is 1.5 mm; the thickness of the copper ring d2 is 0.2 times of the period L of the slow wave system of the traveling wave tube, and d2 is 0.6mm;

[0054] (2) Process the coupling grooves of the pole shoe and the copper ring in (2), so that the angle of the coupling groove of the pole shoe is greater than the angle of the coupling groove of the copper ring; the angle of the coupling groove on the pole shoe is 58° °, the angle of the coupling slot on the copper ring is 50°, so that the working frequency band of the traveling wave tube does not shift;

[0055] (3) Process the loading head...

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Abstract

The invention discloses a slow-wave structure of a multiple-beam coupling cavity traveling-wave tube and a manufacturing method of the slow-wave structure. The slow-wave structure of the multiple-beam coupling cavity traveling-wave tube consists of a coupling cavity chain connected by pole shoes and copper rings; the pole shoes and the copper rings are alternately arranged; coupling slots which are staggered with one another in 180-degree arrangement are formed on the pole shoes and the copper rings; and the thickness d1 of the pole shoes is greater than the thickness d2 of the copper rings. The manufacturing method of the slow-wave structure comprises two steps. By changing the thicknesses d1 and d2 of the pole shoes and the copper rings, the pole shoes can conduct a larger magnetic field value without a magnetic field saturation phenomenon. The method is simple and feasible in operation; and the electronic beam passing rate and the working stability of a high-power multiple-beam coupling cavity traveling-wave tube can be improved effectively.

Description

technical field [0001] The invention relates to the field of microwave vacuum electronic devices, in particular to a slow-wave structure of a multi-injection coupling cavity traveling wave tube and a manufacturing method thereof, in particular to a coupling cavity traveling-wave tube slow-wave structure and its manufacturing method for high-power multi-injection traveling wave tubes Production Method. Background technique [0002] As a vacuum microwave power amplifier, traveling wave tubes have the advantages of wide frequency band, large gain, high efficiency, and high reliability. They are widely used in various military microwave transmitters and are known as the "heart" of weapons and equipment. [0003] According to its slow wave structure, traveling wave tubes can be divided into helical traveling wave tubes, coupled cavity traveling wave tubes, multi-injection coupled cavity traveling wave tubes, etc. Since the slow-wave structure of the multi-injection coupling cavi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/24H01J9/00
Inventor 吴华夏江祝苗方卫肖兵沈旭东
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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