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L-waveband low-guide magnetic field compact high-power microwave device

A technology of high-power microwave and guiding magnetic field, which is applied to the circuit components of transit-time electronic tubes, etc., can solve the problems of bulky, strong guiding magnetic field, high energy consumption, etc., and achieve the effect of reducing volume and energy demand

Active Publication Date: 2019-04-12
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

In the existing high-power microwave sources, high-impedance devices have high beam conversion efficiency, but generally require a strong guiding magnetic field, especially when the microwave source operates at a repetition rate, a bulky, high-energy-consuming The solenoid magnet system

Method used

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  • L-waveband low-guide magnetic field compact high-power microwave device

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Embodiment

[0018] A high voltage of 450kV is applied between the cathode and the anode, and the cathode emits an annular hollow electron beam with inner and outer diameters of 3.0cm and 3.5cm, respectively, and a beam intensity of 6.0kA. Under the guidance of a 0.5T axial magnetic field, the high-current electron beam is transmitted into the beam-wave interaction area, and the electron beam transfers energy to the microwave field. A voltage pulse can generate high-power microwaves with a frequency of 1.56GHz and a power of 500MW respectively.

[0019] The specific selection parameters of the resonator structure are:

[0020] Microwave reflection cavity, the inner and outer radii are 3.8cm and 8.5cm respectively, and the axial length is 2.0cm;

[0021] The beam interaction cavity has an inner and outer radius of 3.8cm and 6.5cm respectively, and an axial length of 3.0cm;

[0022] The first microwave extraction cavity has an inner and outer radius of 3.8cm and 8.5cm respectively, and an a...

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Abstract

The invention provides an L-waveband low-guide magnetic field compact high-power microwave device; according to the scheme, the microwave device comprises a circular waveguide outer cylinder, a coaxial inner conductor and a cathode; the circular waveguide outer cylinder is arranged outside the coaxial inner conductor in a sleeved mode, and the cathode is arranged at the front end of the coaxial inner conductor to transmit an annular electron beam; a microwave reflection cavity, a beam-wave interaction cavity, a first microwave extraction cavity and a second microwave extraction cavity are sequentially arranged in the circular waveguide outer cylinder along the electron beam transmission direction; and the annular electron beam emitted by the cathode can be radiated to generate high-power microwaves with the frequency of 1.56 GHz after passing through the four-resonant cavity structure in the primary pulse. According to the device, the size and the weight of a high-power microwave source system are greatly reduced, and the energy requirement of the magnetic field on the power supply can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of high-power microwave devices, in particular to a compact high-power microwave device with L-band low guiding magnetic field. Background technique [0002] High-power microwave generally refers to electromagnetic waves with a peak power above 100MW and an operating frequency in the range of 1-300GHz. With the development of high-power microwave research, higher and higher requirements are put forward for the total system efficiency of high-power microwave sources. [0003] The axial O-shaped high-power microwave device is a kind of high-power microwave device that is widely used due to the easy guidance of the electron beam brought by the structure and the variable combination of the structure. At present, the radiation generation of axial O-type high-power microwave devices generally requires a longer slow-wave structure to achieve synchronization of the phase velocity of the electron beam and the microw...

Claims

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Application Information

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IPC IPC(8): H01J23/24H01J23/18
CPCH01J23/18H01J23/24
Inventor 张运俭丁恩燕
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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