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Multi-magnetron series-connected microwave power synthesizer

A microwave power and magnetron technology, which is applied to waveguide devices, electrical components, connecting devices, etc., can solve the problem that it is difficult to meet the requirements of high-power microwave components, and a single high-power magnetron is expensive and difficult to meet. High power requirements and other issues, to achieve the effect of low cost, large microwave power capacity and simple form

Active Publication Date: 2012-07-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the frequency and phase of the magnetron will change randomly, coherent power combination cannot be directly performed. Therefore, under the current technical conditions, only a single high-power magnetron can be used as a high-power microwave source device for microwave energy transmission, heating
And the high-power magnetron of prior art, its structure all contains expensive circulator, isolator
Therefore, the disadvantages of using a single high-power magnetron as a microwave source device are that the single high-power magnetron used as a microwave source device is expensive and the equipment cost is high; It is certain, and the specifications of the magnetron are limited. Therefore, it is difficult to meet the high-power requirements of production practice with a single high-power magnetron as a microwave source device for microwave energy transmission and heating.
Especially in the field of industrial microwave heating, it is difficult to meet the requirements for high-power microwave components

Method used

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  • Multi-magnetron series-connected microwave power synthesizer
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  • Multi-magnetron series-connected microwave power synthesizer

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The multi-magnetron series microwave power combiner of the present embodiment has a structure as attached figure 1 As shown, it consists of a standard rectangular waveguide 1 of model BJ22 and two microwave magnetrons of model 2M219 with a rated power of 900W and a transmission frequency in the range of 2.45GHz. Process holes matching the magnetron radiation antenna 3 at the wide wall of the waveguide at 1 / 4 waveguide wavelength (37mm) and 5 / 4 waveguide wavelength (185mm) away from the short-circuit terminal point respectively, and connect the two magnetrons The control antenna 3 is fixed on the wide wall of the waveguide with a metal sheet, and the antenna 3 extends into the waveguide through the center of the opening. After the two magnetrons are powered, double the rated power output of the magnetrons is obtained at the output end of the waveguide.

Embodiment 2

[0024] The multi-magnetron series microwave power combiner of the present embodiment has a structure as attached image 3 As shown, it consists of a standard rectangular waveguide 1 of model BJ22 and four microwave magnetrons of model 2M219 with a rated power of 900W and a transmission frequency in the range of 2.45GHz. Respectively at 1 / 4 waveguide wavelength (37mm), 5 / 4 waveguide wavelength (185mm), 9 / 4 waveguide wavelength (333mm) and 13 / 4 waveguide wavelength (581mm) from the short-circuit terminal point of the wide wall of the waveguide Process and match the magnetron antenna 3 to make openings, fix the 4 magnetron antennas 3 on the wide wall of the waveguide with metal sheets, and make the radiation antenna 3 extend into the waveguide through the center of the opening. After the four magnetrons are powered, four times the rated power output of the magnetrons is obtained at the output end of the waveguide.

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Abstract

The invention discloses a multi-magnetron series-connected microwave power synthesizer which mainly comprises a wave conductor and at least two magnetrons, wherein the magnetrons are arranged on the wave conductor and used for transmitting microwaves. At least two open holes are processed in the wave conductor in a position which is lambda / (n+1 / 4) away from the terminal of a short circuit, and the open holes are matched with antennas of the magnetrons. The antennas of the magnetrons extend into the wave conductor through the open holes, and the magnetrons and the wave conductor are fixed together with fixed parts. The multi-magnetron series-connected microwave power synthesizer uses the injection locking principle and locks microwave frequencies and phases of a plurality of magnetrons together, which realizes the synthesis of microwave power. Compared with a high-power single-magnetron microwave source device of the prior art, the microwave power synthesizer provided by the invention as a microwave source device has the advantages of low price, simple structure, etc., and can meet the requirements of transmitting microwave power and heating the microwave source device to required power.

Description

technical field [0001] The invention relates to microwave power synthesis technology, belongs to the field of microwave devices, and more specifically relates to a microwave power synthesizer. Background technique [0002] Microwave has been widely used in radar, communication, microwave energy transmission, microwave heating and other technical fields. With the development of economy and technology, there are more and more fields using microwave energy transmission and heating. The use of microwave energy transmission and heating requires the use of high-power microwave source devices. The high-power microwave source devices currently used are mainly high-power magnetrons, and their power can reach more than ten kilowatts, and the maximum power does not exceed tens of kilowatts. Because the frequency and phase of the magnetron will change randomly, coherent power combination cannot be directly performed. Therefore, under the current technical conditions, only a single hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/12
Inventor 刘长军黄卡玛赵翔闫丽萍陈星郭庆功
Owner SICHUAN UNIV