A kind of slow wave structure suitable for terahertz traveling wave tube and its processing method
A technology of slow wave structure and traveling wave tube, which is applied in the slow wave structure of terahertz traveling wave tube and its processing field, to achieve performance advantages, increase channel size, and enhance injection wave interaction strength
Active Publication Date: 2022-07-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0005] Aiming at many defects in the existing slow wave structure processing methods in terms of processing accuracy, processing difficulty, yield rate, etc., the present invention provides a slow wave structure suitable for terahertz traveling wave tubes and a processing method thereof
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[0025] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings; in order to better illustrate the embodiments, the accompanying drawings will be enlarged or reduced, and do not represent the actual size.
[0026] This embodiment provides a slow-wave structure suitable for a terahertz traveling wave tube, the structure of which is as follows figure 1 As shown, it includes: a cylindrical metal casing and several fan-shaped discs; wherein, the fan-shaped discs are as shown in figure 2 As shown, the radius of the inner ring is 0.3mm, and the radius of the outer ring is 0.68mm; the cylindrical metal shell is as image 3 As shown in the figure, the outer radius of the structure is 0.78mm, the inner radius is 0.68mm, the inclination angle α of the sector is 15°, and the central angle β is 140°; The sheet is inserted into the cylindrical metal casing along the inclined slit and fixed by welding, so that a pluralit...
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Abstract
The invention belongs to the field of vacuum electronics, and specifically provides a slow wave structure suitable for a terahertz traveling wave tube and a processing method thereof. The invention adopts the staggered grid structure of the cylindrical metal shell loaded with the obliquely arranged fan-shaped disks, which can greatly improve the beam interaction between electron beams and slow waves in the structure, and ensure a large bandwidth and ensure the stability of the structure. The electron beam channel is large, and the coupling impedance in the working frequency band is high; and a design of separating the metal casing and the loading disc is further proposed, and the loading disc is sealed and fixed to the metal through the inclined gap opened on the metal casing that matches the loading disc. The structure on the shell, based on this structure, the metal shell and the fan-shaped disk can be processed separately and then assembled to ensure the consistency of the loaded disk, thus ensuring the consistency of the space cycle of each unit of the device, which is perfectly suitable for small size. The industrial production of terahertz traveling wave tubes has the advantages of high production efficiency and high yield.
Description
technical field [0001] The invention belongs to the field of vacuum electronics, relates to a slow wave structure in a terahertz band traveling wave tube, and specifically provides a slow wave structure suitable for a terahertz traveling wave tube and a processing method thereof. Background technique [0002] Terahertz refers to electromagnetic radiation in the range of 0.1T to 10THz. Due to the excellent properties of terahertz waves in terms of bandwidth, information density and power, it has a very high application value. Terahertz technology not only has extremely significant advantages in traditional electronic information fields such as communication and radar, but also has broad application prospects in many fields such as high-precision material property research, genetic testing, atmospheric monitoring, cell imaging and even counter-terrorism. Because of this, terahertz technology has gradually received great attention from researchers in related fields. [0003] A...
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IPC IPC(8): H01J23/24H01J9/00B23P15/00
CPCH01J23/24H01J9/00B23P15/00
Inventor 袁学松崔仲韬陈青云鄢扬李海龙王彬殷勇蒙林
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA