阅读说明：本技术 一种4GHz高功率微波器件 (4GHz high power microwave device ) 是由 丁恩燕 张运俭 金晖 向飞 康强 谭杰 胡进光 王冬 杨周炳 陆巍 张北镇 安 于 2020-04-02 设计创作，主要内容包括：本发明公开了一种4GHz高功率微波器件,具有同轴内导体的四腔微波器件的轴向总长度与辐射微波波长的比值为1.6；所述四腔微波器件内沿电子束传输方向依次设置环形内直径均为76mm的第一腔体、第二腔体、第三腔体和第四腔体；所述第一腔体外直径为120mm,轴向长度为15mm；第二腔体外直径为100mm,轴向长度为15mm；第三腔体外直径为110mm,轴向长度为15mm；第四腔体外直径为110mm,轴向长度为15mm；第一腔体与第二腔体之间间隔为15mm；第二腔体与第三腔体之间间隔为35mm；第三腔体与第四腔体之间间隔为10mm；所述内导体直径为30mm。采用本发明的一种4GHz高功率微波器件其轴向结构尺寸极大简洁,具有小型化,轻量化的优点。(The invention discloses a 4GHz high-power microwave device, wherein the ratio of the axial total length of a four-cavity microwave device with a coaxial inner conductor to the wavelength of radiated microwaves is 1.6; a first cavity, a second cavity, a third cavity and a fourth cavity with annular inner diameters of 76mm are sequentially arranged in the four-cavity microwave device along the transmission direction of electron beams; the outer diameter of the first cavity is 120mm, and the axial length of the first cavity is 15 mm; the outer diameter of the second cavity is 100mm, and the axial length is 15 mm; the outer diameter of the third cavity is 110mm, and the axial length is 15 mm; the outer diameter of the fourth cavity is 110mm, and the axial length is 15 mm; the interval between the first cavity and the second cavity is 15 mm; the second cavity and the third cavity are separated by 35 mm; the interval between the third cavity and the fourth cavity is 10 mm; the diameter of the inner conductor is 30 mm. The 4GHz high-power microwave device has the advantages of extremely simple axial structure size, miniaturization and light weight.)

1. A4 GHz high power microwave device, its characterized in that: the ratio of the axial total length of the four-cavity microwave device with the coaxial inner conductor to the wavelength of the radiated microwave is 1.6;

a first cavity, a second cavity, a third cavity and a fourth cavity with annular inner diameters of 76mm are sequentially arranged in the four-cavity microwave device along the transmission direction of electron beams;

the outer diameter of the first cavity is 120mm, and the axial length of the first cavity is 15 mm; the outer diameter of the second cavity is 100mm, and the axial length is 15 mm; the outer diameter of the third cavity is 110mm, and the axial length is 15 mm;

the outer diameter of the fourth cavity is 110mm, and the axial length is 15 mm; the interval between the first cavity and the second cavity is 15 mm; the second cavity and the third cavity are separated by 35 mm; the interval between the third cavity and the fourth cavity is 10 mm;

the diameter of the inner conductor is 30 mm.

2. The 4GHz high power microwave device of claim 1 wherein: the voltage is 380kV, the current is 6kA, the inner diameter is 60mm, the annular electron beam with the outer diameter of 70mm is transmitted in the microwave device under the guidance of the axial magnetic field of 0.63T, and high-power microwaves of 4GHz are generated by radiation.

3. The 4GHz high power microwave device of claim 1 wherein: the cross sections of the first cavity, the second cavity, the third cavity and the fourth cavity are rectangular.

4. The 4GHz high power microwave device of claim 1 wherein: the microwave device comprises a circular waveguide outer cylinder, an inner conductor which is arranged in the circular waveguide outer cylinder and is coaxial with the circular waveguide outer cylinder, a vacuum electron beam transmission channel is formed between the inner conductor and the circular waveguide outer cylinder, and an annular electron beam is transmitted in the electron beam transmission channel.

5. The 4GHz high power microwave device of claim 1 wherein: the interior of the microwave device is in a vacuum state of millipascal magnitude.

6. The 4GHz high power microwave device of claim 1 wherein: the circular waveguide outer cylinder is made of nonmagnetic stainless steel.

Technical Field

The invention relates to a 4GHz high-power microwave device, and belongs to the technical field of high-power microwave devices.

Background

The high-power microwave generally refers to electromagnetic waves with peak power of more than 100MW and working frequency of 1-300 GHz. With the development of high-power microwave research, higher and higher requirements are put on the overall system efficiency of a high-power microwave source.

The axial O-shaped high-power microwave device is a high-power microwave device with wider application due to the easy guidance of electron beams and the changeable combination of the structure. At present, a longer slow wave structure is generally needed for the radiation generation of an axial O-shaped high-power microwave device to achieve the synchronization of the phase velocity of an electron beam and the microwave. In the existing high-power microwave source, the high-impedance device has high beam conversion efficiency, but generally needs a strong guiding magnetic field, and particularly needs a bulky and high-energy-consumption solenoid magnet system when the microwave source operates in a repeated frequency state. If the axial size of the device is shortened as much as possible, the volume and the weight of the magnet system can be reduced by several times, and the energy requirement of a magnetic field on a power supply can be greatly reduced. Therefore, how to design a compact high-power microwave source is one of the pursued targets.

Disclosure of Invention

The invention aims to: aiming at the existing problems, the invention provides a 4GHz high-power microwave device, which has the advantages of extremely simple axial structure size, miniaturization and light weight.

The technical scheme adopted by the invention is as follows:

a4 GHz high-power microwave device, the ratio of axial total length and radiated microwave wavelength of the four-cavity microwave device with coaxial inner conductors is 1.6;

a first cavity, a second cavity, a third cavity and a fourth cavity with annular inner diameters of 76mm are sequentially arranged in the four-cavity microwave device along the transmission direction of electron beams;

the outer diameter of the first cavity is 120mm, and the axial length of the first cavity is 15 mm; the outer diameter of the second cavity is 100mm, and the axial length is 15 mm; the outer diameter of the third cavity is 110mm, and the axial length is 15 mm; the outer diameter of the fourth cavity is 110mm, and the axial length is 15 mm; the interval between the first cavity and the second cavity is 15 mm; the second cavity and the third cavity are separated by 35 mm; the interval between the third cavity and the fourth cavity is 10 mm;

the diameter of the inner conductor is 30 mm.

In the invention, two ends of the circular waveguide outer cylinder are closed, the interior of the circular waveguide outer cylinder is vacuumized to millipascal level, and one end in the circular waveguide outer cylinder is provided with a cathode for emitting annular electron beams.

Preferably, a ring-shaped electron beam with the voltage of 380kV and the current of 6kA, the inner diameter of 60mm and the outer diameter of 70mm is transmitted in a microwave device under the guidance of an axial magnetic field of 0.63T, and high-power microwaves of 4GHz are generated by radiation.

Preferably, the cross section of the first cavity, the second cavity, the third cavity and the fourth cavity is rectangular.

Preferably, the microwave device comprises a circular waveguide outer cylinder, an inner conductor which is arranged in the circular waveguide outer cylinder and is coaxial with the circular waveguide outer cylinder, a vacuum electron beam transmission channel is formed between the inner conductor and the circular waveguide outer cylinder, and a ring-shaped electron beam is transmitted in the electron beam transmission channel.

Preferably, the interior of the microwave device is in a vacuum state of millipascal magnitude.

Preferably, the circular waveguide outer cylinder is made of nonmagnetic stainless steel.

The 4GHz high-power microwave device adopts an axially compact slow-wave structure to generate 4GHz high-power microwaves, has the advantages of simple structure, very compact axial and radial dimensions, and 1.6 of ratio of axial total length to radiation wavelength, has extremely simple structure dimension, is miniaturized and lightened compared with a device in the same frequency band, and can greatly reduce the energy required by the magnetic field for the energy of a power supply.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the volume and the weight of the high-power microwave source system are greatly reduced;

2. the energy requirement of the magnetic field on the power supply can be greatly reduced.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of a 4GHz high-power microwave device.

The labels in the figure are: the device comprises a 1-circular waveguide outer cylinder, a 2-inner conductor, a 3-electron beam transmission channel, a 4-annular electron beam, a 51-first cavity, a 52-second cavity, a 53-third cavity and a 54-fourth cavity.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.