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Three-dimensional Electromagnetic Field Simulation Method Based on Periodic Structure of Parameterized Reduced-order Model

A technology of periodic structure and reduced-order model, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems such as the inability to realize the optimization simulation of the periodic structure of microwave tubes, and the low efficiency of optimization simulation.

Active Publication Date: 2016-11-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

At present, the existing eigenanalysis methods for the periodic structure of microwave tubes can only remodel, mesh and perform eigenanalysis under different geometric parameters, so the efficiency of such optimization simulation is very low
This shortcoming makes it impossible to realize high-efficiency optimization simulation of microwave tube periodic structures using the existing finite eigenanalysis method for microwave tube periodic structures

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  • Three-dimensional Electromagnetic Field Simulation Method Based on Periodic Structure of Parameterized Reduced-order Model
  • Three-dimensional Electromagnetic Field Simulation Method Based on Periodic Structure of Parameterized Reduced-order Model
  • Three-dimensional Electromagnetic Field Simulation Method Based on Periodic Structure of Parameterized Reduced-order Model

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Embodiment Construction

[0081] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0082] refer to figure 1 , a three-dimensional electromagnetic field simulation method based on a parameterized reduced-order model periodic structure, comprising the following steps:

[0083] A. Select a specific microwave tube high-frequency circuit with periodic characteristics;

[0084] Select specific microwave tube high-frequency circuits with periodic characteristics, such as helical high-frequency circuits, coupled cavity high-frequency circuits, folded waveguide high-frequency circuits, etc.

[0085] B. Take a structure with a period length from the high-frequency circuit selected in step A for modeling, and establish a geometric structure model corresponding to the structure with the period length.

[0086] According to the periodicity of high-frequency circuits, usually only one spatial periodic geometri...

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Abstract

The invention discloses a three-dimensional electromagnetic field simulation method based on the periodic structure of the parameterized reduced-order model. The geometric parameters of the periodic structure to be optimized are set as variables, and a set of data is modeled within the range of the geometric parameters, and microwave The finite element eigenanalysis of the periodic structure of the microwave tube can quickly and accurately obtain all the heights of the periodic structure of the microwave tube within the range of multiple geometric parameters: such as the pitch of the helical slow wave structure, the inner diameter of the helix, and the width of the clamping rod. Frequency characteristic curve, so as to realize the rapid optimization simulation of the microwave tube periodic structure.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional electromagnetic field numerical solution, and relates to a three-dimensional electromagnetic field simulation method based on a periodic structure of a parameterized reduced-order model. Background technique [0002] Periodic structures are widely used in microwave tubes, including periodic changes in waveguide cross-section, periodic loading of diaphragms in waveguides, and periodic filling of dielectrics. In microwave tubes, periodic structures are commonly used as the high-frequency circuit of the device, forming a place where electron beams interact with high-frequency fields for energy exchange to realize microwave oscillation or amplification. High-frequency characteristics of the periodic structure: including dispersion characteristics, impedance characteristics and attenuation characteristics, which directly affect the operating frequency, frequency bandwidth, conversion efficien...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 徐立李斌杨中海朱小芳李建清
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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