Metamaterial electromagnetic parameter inversion method based on improved K-K algorithm

A technology of electromagnetic parameters and metamaterials, applied in the field of testing, can solve problems such as slow calculation speed, and achieve the effect of high test accuracy and reasonable design

Active Publication Date: 2017-07-25
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

[0035] In the traditional metamaterial electromagnetic parameter inversion, the calculation speed is slow, a large amount of data processing is required, and the imaginary part compensation method needs to estimate the n value of the test frequency point according to the relationship of

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  • Metamaterial electromagnetic parameter inversion method based on improved K-K algorithm
  • Metamaterial electromagnetic parameter inversion method based on improved K-K algorithm
  • Metamaterial electromagnetic parameter inversion method based on improved K-K algorithm

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Embodiment Construction

[0088] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0089] The technical principle of the metamaterial electromagnetic parameter inversion method based on the improved K-K algorithm:

[0090] The present invention mainly is divided into four steps:

[0091] Step 1: Calibrate the vector network analyzer by the traditional free-space method;

[0092] The second step: obtain the S-parameters of the two ports of the sample material (especially the metamaterial) with a vector network analyzer;

[0093] The third step is to demultiplex the propagation constant γ of the wave in the sample based on the improved K-K relationship.

[0094] (1) Mathematical model of the K-K relationship: For a linear passive response function, if the values ​​of all incident frequencies of the imaginary part are known, the real part can be calculated. Similarly, if the real part is known, the imaginary part can be calcula...

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Abstract

The invention discloses a metamaterial electromagnetic parameter inversion method based on an improved K-K (Kramers-Kronig) algorithm and belongs to the technical field of testing. The method solves the multi valuedness of a metamaterial electromagnetic parameter inversion process relative to a group delay method and an imaginary part compensation method, does not need to estimate the n value of a test starting frequency point or carry out complex data processing, and is high in test precision.

Description

technical field [0001] The invention belongs to the technical field of testing, and in particular relates to an inversion method of electromagnetic parameters of metamaterials based on an improved K-K algorithm. Background technique [0002] Metamaterial is a new type of artificial material, which has unique physical properties for electromagnetic waves, such as negative refractive index, negative electromagnetic parameters, etc. These unique physical properties make metamaterials have great application value in various fields, such as terahertz imaging , stealth materials, antenna design, etc. However, before the industrial application of metamaterials, it is often necessary to know the corresponding electromagnetic parameters, dielectric constant and magnetic permeability. Therefore, for the metamaterials that have been designed, it is critical to quickly and accurately calculate their corresponding electromagnetic parameters. [0003] The research on electromagnetic par...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12G01R27/26
CPCG01R27/2617G01R33/1223
Inventor 宋萌萌胡大海杜刘革王亚海
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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