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Novel magnetron injection locking system based on filament injection

A technology of injection locking and magnetron, which is applied in the direction of magnetron, transit-time electronic tube, discharge tube, etc., can solve the problems of high manufacturing cost, large space occupation, high insertion loss, etc., and reduce the number of waveguide devices and occupy Effect of space reduction and cost reduction

Active Publication Date: 2022-05-06
SICHUAN UNIV
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to: address the above problems, to provide a novel magnetron injection locking system based on filament injection, which solves the need to use a large-volume waveguide device to isolate the external signal injection circuit and the magnetron output circuit in the prior art. Occupies a large space, high manufacturing cost, and high insertion loss

Method used

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  • Novel magnetron injection locking system based on filament injection
  • Novel magnetron injection locking system based on filament injection
  • Novel magnetron injection locking system based on filament injection

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Embodiment 1

[0029] Such as Figure 1~5 As shown, a novel magnetron injection locking system based on filament injection includes an excitation cavity 1, a magnetron 2, a waveguide directional coupler 3 and a load 4; the magnetron 2 is arranged on the excitation cavity 1, and It communicates with the excitation chamber 1, the waveguide directional coupler 3 is detachably connected with the excitation chamber 1, and the waveguide directional coupler 3 is detachably connected with the load 4; the magnetron 2 is provided with an antenna communicating with the outside world ; The antenna connected to the outside world couples the external injection signal into the magnetron cavity to realize injection locking;

[0030] The magnetron 2 includes a magnetron filament 201, a filament cavity 206, a monopole antenna 202, a magnetron cavity 203, a magnetron power supply end 204 and a first cold water supply end 205; the magnetron power supply end and the monopole antenna are arranged outside the fil...

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Abstract

The invention discloses a novel magnetron injection locking system based on filament injection. The novel magnetron injection locking system comprises an excitation cavity, a magnetron and a load, the magnetron is arranged on the excitation cavity and communicated with the excitation cavity, and the excitation cavity is detachably connected with the load; an antenna communicated with the outside is arranged on the magnetron; an antenna communicated with the outside couples an external injection signal into the magnetron to realize injection locking; a signal is injected from the monopole antenna and enters the magnetron cavity through magnetron filament coupling via the monopole antenna, and a magnetron output signal is output via the waveguide excitation cavity and is finally absorbed by the load via the directional coupler; therefore, the magnetron output signal can be locked by the signal injected from the external signal input position, and the frequency completely follows within the locking bandwidth.

Description

technical field [0001] The invention relates to the technical field of magnetron control, in particular to a novel magnetron injection locking system based on filament injection. Background technique [0002] Magnetron is an important industrial microwave source. It has poor output characteristics, wide output frequency band and uncontrollable phase. Injection frequency locking technology can effectively improve the output characteristics of magnetron. Magnetron injection locking technology refers to injecting a high-stability low-power external signal into a low-stability high-power magnetron. When the power and frequency of the injected signal meet certain conditions, the frequency of the output signal of the magnetron and phase will follow the injected signal. This technology can use a small signal to control the phase and frequency of a high-power oscillator, and can reduce the sideband noise of the magnetron output. In 1947, Adler conducted theoretical research on osc...

Claims

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Application Information

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IPC IPC(8): H01J23/075H01J25/50
CPCH01J23/075H01J25/50H01J23/38H01J25/587H01J23/05H01J23/54
Inventor 刘长军王绍岳黄凯
Owner SICHUAN UNIV
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