A kind of helical slow wave device
A helical and linear technology, applied in the field of helical-like slow-wave devices, can solve complex problems
Active Publication Date: 2020-05-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
Although the helical traveling wave tube has reached a very mature stage in technology, due to the complicated three-dimensional structure formed by the helical wire, the clamping rod and the fins often loaded to achieve good high-frequency characteristics, for the tube in the millimeter wave frequency band , the extremely small size brings great challenges to the processing technology
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[0024] figure 1 It is a schematic diagram of a helical-like slow wave device of the present invention.
[0025] In this example, if figure 1 As shown, the present invention is a kind of helical-type slow wave device, including: opposite semicircular metal sheet 1, metal cylinder 2, rectangular metal block 3, rectangular ceramic dielectric clamping rod 4 and hollow circular waveguide 5;
[0026] Such as Figure 6 As shown, the opposing semicircular metal sheets are distributed along the axis, and the cutting edges of each group of opposing semicircular metal sheets are aligned to form a circular electron injection channel, with a certain distance in the longitudinal direction; on a single semicircular metal sheet, the semicircular The two ends of the metal sheet extend the cutting edge for a certain distance to form a rectangular metal block, and a metal cylinder of a certain length protrudes from the center of the cutting edge of the semicircular metal sheet; the opposite se...
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The invention discloses a helical slow wave device. By inserting two opposing semicircular metal sheets into a hollow circular waveguide, the edges of the two semicircular metal sheets are staggered and elongated outward for a certain distance to form a rectangular metal block. , two semicircular metal sheets are connected to the center line of the rectangular block through a metal cylinder of a certain length, and then two ceramic dielectric rectangular blocks are inserted between the two pairs of semicircular metal sheets and the hollow circular waveguide as a pair of clamping rods Two pairs of semicircular metal sheets are supported to form a helical-like slow wave device with axial distribution and continuous periodicity; a natural circular electron injection channel is formed between the two opposing semicircular metal sheets , when the circular electron beam passes through the electron beam channel, it will interact with the electromagnetic wave signal on the slow wave structure, and the kinetic energy signal of the electron beam is converted into a high-frequency signal, so that the high-frequency signal is amplified.
Description
technical field [0001] The invention belongs to the field of microwave electric vacuum technology, and more specifically relates to a helical-like slow wave device for realizing signal amplification. Background technique [0002] An electric vacuum device is a device in which charged particles interact with microwave signals in a vacuum environment, and energy exchange occurs to amplify microwave signals. The feature of this device is that it can work under relatively large voltage and current conditions, and can realize energy exchange. It has the advantages of high output power, wide bandwidth, high gain, and low noise. Therefore, electric vacuum devices can be widely used in military fields such as electronic countermeasures and satellite communications. Although within a period of time, the rise of semiconductor microwave / millimeter wave devices and related integrated circuits, as well as the rapid development of various lasers and integrated optical systems used in the...
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IPC IPC(8): H01J23/38
Inventor 吴钢雄殷海荣魏彦玉杨睿超李倩雷霞岳玲娜徐进赵国庆王文祥
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA