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A NUMERICAL METHOD BASED ON FUNCTION APPROXIMATION FOR ADAPTIVE 3D MICROWAVE TUBE INPUT-OUTPUT WINDOW MODEL REDUCTION

An input-output, model reduction technology, applied in special data processing applications, complex mathematical operations, design optimization/simulation, etc., can solve the problem of time-consuming and complex matrix function derivation operations

Active Publication Date: 2020-03-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to address the above existing problems or deficiencies, in order to solve the time-consuming and complex calculation of matrix function derivation caused by Taylor series expansion in the existing computational electromagnetics model reduction numerical method, in order to improve the self-efficacy of calculation Adaptability, the present invention provides a numerical method for reducing the order of the three-dimensional microwave tube input and output window model based on function approximation adaptive error analysis

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  • A NUMERICAL METHOD BASED ON FUNCTION APPROXIMATION FOR ADAPTIVE 3D MICROWAVE TUBE INPUT-OUTPUT WINDOW MODEL REDUCTION
  • A NUMERICAL METHOD BASED ON FUNCTION APPROXIMATION FOR ADAPTIVE 3D MICROWAVE TUBE INPUT-OUTPUT WINDOW MODEL REDUCTION
  • A NUMERICAL METHOD BASED ON FUNCTION APPROXIMATION FOR ADAPTIVE 3D MICROWAVE TUBE INPUT-OUTPUT WINDOW MODEL REDUCTION

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0050] This embodiment provides a numerical method for reducing the order of the three-dimensional microwave tube input and output window model based on function approximation adaptive error analysis, such as figure 1 shown, including the following steps:

[0051] A. Simulation modeling of target electronic device structure combined with material properties;

[0052] According to the physical structure of the target electronic device, combined with the working environment and boundary conditions, set the corresponding working frequency range, and simulate and model it;

[0053] B. Use tetrahedral grids to discretize the solution domain;

[0054] In any finite element analysis, regional discretization is the first step, and the whole domain Ω is divided into M sub-domains by tetrahedral grid discretization, expressed as: Ω e (e=1,2,3,...,M) ...

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Abstract

The invention belongs to the field of computational electromagnetism numerical solution, and provides a numerical method for reducing the order of a three-dimensional microwave tube input and output window model based on function approximation adaptive error analysis. The three-dimensional eigenanalysis of the microwave tube is carried out through the vector finite element method, and the complex The electromagnetic problem is converted into a mathematical large-scale matrix function equation, and a series of reductions are performed on the equation, that is, the Chebyshev function is used to approximate, combined with the error analysis of the eigenvalues, adaptively select the interpolation point, and divide the convergence of the entire frequency band interval, the expanded subspace of the reduced-order model is obtained, and the final S-parameters can be obtained through post-processing, so as to realize the optimization simulation of the full-band adaptation of the microwave tube.

Description

technical field [0001] The invention belongs to the field of computational electromagnetism numerical solution, and relates to a numerical method for reducing the order of a three-dimensional microwave tube input and output window model based on function approximation self-adaptive error analysis. Background technique [0002] In a microwave system, the input-output window is the key to the energy coupling between the microwave tube and the microwave system, and its performance directly affects the bandwidth, reliability, conversion efficiency and life of the device. With the rapid development of modern computer technology, microwave tubes are constantly moving towards higher frequency, higher power, and wider frequency bands in many fields such as military applications. Therefore, the simulation design of the input and output structures of microwave tubes is also more stringent. [0003] In order to accurately obtain the electromagnetic response characteristics of the micro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F17/16
CPCG06F17/16G06F30/23
Inventor 徐立李星杨中海李斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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