Parameterized reduced model based three-dimensional electromagnetic field simulation method of periodic structure

A periodic structure, reduced-order model technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve 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: 2013-11-27
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

Method used

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  • Parameterized reduced model based three-dimensional electromagnetic field simulation method of periodic structure
  • Parameterized reduced model based three-dimensional electromagnetic field simulation method of periodic structure
  • Parameterized reduced model based three-dimensional electromagnetic field simulation method of periodic structure

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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 geometric...

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Abstract

The invention discloses a parameterized reduced model based three-dimensional electromagnetic field simulation method of a periodic structure. Geometric parameters, needing optimization, of the periodic structure are set to be variables, finite-element eigen analysis of the microwave-tube periodic structure is performed after a group of data is fetched in a geometric parameter variation range for modeling, and then all high-frequency characteristic curves of the microwave-tube periodic structure in variation ranges of multiple geometric parameters such as pitch of a helix slow-wave structure, internal diameter of a helix and clamping rod width can be acquired rapidly and accurately, so that quick optimized simulation of the microwave-tube periodic structure is realized.

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...

Claims

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Application Information

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Patent Type & Authority Applications(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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