Method for thermal matching optimizing design of energy coupler

Abstract

The invention belongs to the field of CAD (computer-aided design) simulation design of a microwave vacuum electronic device, and particularly relates to a method for thermal matching optimizing design of an energy coupler. The method comprises the following steps of adopting an equivalent medium treatment method of a relativistic electron beam to enable a periodic magnetic field focusing electron beam in a helix traveling wave tube to be equivalent a bi-anisotropic complicated electromagnetic medium, wherein the equivalent dielectric tensor and the magnetic conductivity tensor reflect a relativistic effect between the electron movement and an electromagnetic field; modeling the effective electron beam by sections, so as to more accurately analyze the influence of electron beam loading to the thermal matching characteristic of the helix traveling wave tube; modeling the equivalent electron beams by sections, so as to accurately reflect the fluctuating property of the electron beam in an electron beam envelope under the periodic magnetic field focusing, and the periodicity of the axial focusing magnetic field. The method has the advantages that the result is accurate and efficient, and a feasible and effective method is provided for the simulation analysis and design of the helix traveling wave tube in high-property spaces.

Description

technical field [0001] The invention belongs to the field of CAD simulation design of microwave vacuum electronic devices, and in particular relates to a thermal matching optimization design method of an energy coupler. Background technique [0002] Helical traveling wave tube is a very important microwave electro-vacuum device, which has the characteristics of high power, wide frequency band, high gain and high efficiency, and is widely used in radar, electronic countermeasures and satellite communication and other fields. The energy coupler is one of the key components of the helical traveling wave tube, which is responsible for the energy coupling and transmission of the electromagnetic signal between the transmission line outside the tube and the helical high frequency system. The schematic diagram of energy coupling and transmission between the energy coupler and the helical high frequency system is shown in figure 1 . When the helical traveling wave tube is working, ...

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Problems solved by technology

[0026] In view of the above-mentioned problems or deficiencies, the purpose of the present invention is to solve the problems in the prior art when the electronic beam is equivalent to an anisotropic special medium with a dielectric tensor to analyze the thermal matching performance of the helical traveling wave tube. The form of the equivalent dielectric tensor is too complex and cannot reflect the limitations of the relativistic effects of electron motion and electromagnetic field. A thermal matching optimization design method for energy couplers is provided.

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