Low-voltage extended interaction slow wave device
An extended interaction and low-voltage technology, which is applied in the field of low-voltage, W-band or millimeter-wave or even terahertz-band extended interaction slow-wave devices, can solve the problem of EIO low-voltage operation, narrow operating frequency range, and slow-wave The problem of long system size and other problems is achieved, and the effect of simple structure, wide operating frequency range and compact structure of the device is achieved.
Inactive Publication Date: 2019-04-02
南京誉凯电子科技有限公司
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Problems solved by technology
At present, there are patents in China that improve the output power by improving the shape of the electron beam, such as the application number 201510081649 "A Radially Extended Interaction Oscillator for High Power Sources", which discloses a The radial EIO, by increasing the electron emission area and increasing the electron beam channel area, enables EIO to obtain greater power at low current density, but it does not solve the problem of EIO low voltage operation
The publication number is CN104599924A "A Multi-level Interaction System Helical Traveling Wave Tube" emphatically proposes a multi-level interaction system, which uses the adjustment electrodes on the interaction system at all levels to adjust the electron beam, absorbing each The low-energy electrons that interact with the electromagnetic wave in the first-level helix, that is, use the potential on the electrode to deposit the low-energy electrons on the electrode, and the high-energy electrons continue to exchange energy with the electromagnetic wave in the next-level interaction system. The power synthesis of the output ports at all levels improves the electronic efficiency of the traveling wave tube. Due to the effect of the adjusting electrode, the operating voltage of the traveling wave tube is low, which is 4.5kV, and the multi-stage interaction system is connected to make the overall slow wave system longer. , that is, the interaction area is longer, the focusing system is more complex, and the output power is on the order of hundreds of watts after synthesis, but the operating frequency is Ku-band (12.4-18GHz), and its operating frequency range is narrow
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[0015] In this embodiment, the slow-wave device used in conjunction with EIO with a working frequency of 94.3GHz, a working voltage of 3.6kV under standing wave conditions, and a working voltage of 3.7-4.6kV under returning wave conditions is taken as an example: this embodiment uses assembly way, figure 1 , 2 It is the structural diagram of this embodiment; the upper coupling cavity 1 (horizontal length × height × front and rear width) 8 × 5 × 10mm, wherein: the upper coupling cavity 2 (horizontal length × height × front and rear width) 7.2 × 1.3 × 2.0mm, Coupling hole 3 diameter φ1.1mm, 0.1mm, output waveguide 4 (lateral length × height × front and rear width) 1.27 × 3.6 × 2.54mm; slow wave structure 5 (horizontal length × height × front and rear width) 8 × 1.1 × 10mm , wherein: electron beam channel 6 diameters φ0.6mm, (axial) long 10mm, 7 grating grooves. In this embodiment, there are 17 groove gratings with the same shape, and the distance between the centers of adjacent...
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The present invention provides a low-voltage extended interaction slow wave device, and belongs to a low-voltage extended interaction slow wave device in the technical field of high-power microwaves and millimeter waves in vacuum electronic devices. The low-voltage extended interaction slow wave device comprises a housing, trough gratings having two opening ends arranged in parallel at equal intervals and an electron beam channel communicating each trough grating, coupling cavities having inner sides which are opened are respectively arranged at two sides of each trough grating and the electron beam channel, and the top portion of the outer side of one of the coupling cavities is connected with an output waveguide. The low-voltage extended interaction slow wave device employs the trough gratings having two opening ends and the electron beam channel to form a slow wave structure member which is simple in structure and short in the interaction area, can be operated in a 2-8kV low voltageand a W wave band or a millimeter wave band or even a terahertz band to achieve pulse and direct current working and can be used in a standing wave or / and return wave mode, and the output power can reach the order of tens of watts to hundreds of watts. Therefore, the low-voltage extended interaction slow wave device is compact in structure, small in size, wide in working frequency range, low in working voltage, high in output power and wide in application range.
Description
technical field [0001] The invention belongs to the technical field of high-power microwaves and millimeter waves in vacuum electronic devices, and more specifically relates to a low-voltage, W-band or millimeter-wave band or even terahertz frequency band extension used in conjunction with an extended interaction oscillator (EIO). Interacting slow-wave devices. Background technique [0002] In the field of electronic information, modern practical millimeter-wave source electronic devices are mainly divided into two categories: microwave electric vacuum devices and semiconductor devices. However, these two types of devices are essentially different, and each has its own application range. A huge family based on the interaction of electromagnetic waves and electron beams in a vacuum is the core device of radars, satellites, guidance components, communications, medical equipment and other important systems related to national security and national economy and people's livelih...
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IPC IPC(8): H01J23/38
CPCH01J23/38
Inventor刘梅
Owner南京誉凯电子科技有限公司