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Numerical method for order reduction of three-dimensional microwave tube input/output window model based on function approximation adaptive error analysis

A technology of input and output and function approximation, which is applied in the fields of electrical digital data processing, special data processing applications, complex mathematical operations, etc., and can solve problems such as complex and time-consuming matrix function derivation operations

Active Publication Date: 2017-12-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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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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  • Numerical method for order reduction of three-dimensional microwave tube input/output window model based on function approximation adaptive error analysis
  • Numerical method for order reduction of three-dimensional microwave tube input/output window model based on function approximation adaptive error analysis
  • Numerical method for order reduction of three-dimensional microwave tube input/output window model based on function approximation adaptive error analysis

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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 present invention belongs to the field of computational electromagnetism numerical solution, and provides a numerical method for order reduction of a three-dimensional microwave tube input / output window model based on the function approximation adaptive error analysis. The method is characterized in that: three-dimensional eigenanalysis is carried out on the microwave tube by using a vector finite element method; a complex electromagnetic problem is converted into a large-scale mathematical matrix function equation; a series of reduced-order processing is carried out on the equation, namely, the Chebyshev approximation is used by combining with the error analysis of eigenvalues, interpolation points are adaptively selected, a full-band convergence interval is divided, and the expanded subspace of the reduced order model is obtained; and through post-processing, the final S-parameters can be obtained, so that adaptive optimization and simulation of the full-band of the microwave tube is realized.

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 Applications(China)
IPC IPC(8): G06F17/50G06F17/16
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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