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A Design Method of High Performance Absorber Based on Scaling Theory

A design method and wave absorber technology, applied in design optimization/simulation, special data processing applications, antennas, etc., can solve problems such as single product structure and poor designability, to ensure wave absorption performance, efficient design, and realization of absorption Effect

Active Publication Date: 2020-12-22
SHANGHAI RADIO EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the increase of people's demand for high-performance absorbers, a series of civil absorbing materials have appeared, such as mobile phone radiation protection patches, absorbing pyramids, etc., but due to the limitation of manufacturing technology, the product structure is relatively simple and the designability is poor.

Method used

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  • A Design Method of High Performance Absorber Based on Scaling Theory
  • A Design Method of High Performance Absorber Based on Scaling Theory
  • A Design Method of High Performance Absorber Based on Scaling Theory

Examples

Experimental program
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Effect test

Embodiment 1

[0109] This embodiment is designed for equal electromagnetic parameters

[0110] Prototype band high-performance absorber:

[0111] First, select a high-performance absorber in the prototype band. The absorbing structure is a cubic cone structure. The corresponding prototype absorbing material is a dielectric absorbing material. The absorbing particles are carbon black, and the volume addition ratio is 5%. The prototype absorbing material mainly includes two layers. Taking a single structural unit of the material as an example, the structural dimensions mainly include the upper end height H1=400mm, the lower end height H2=40mm, the total height 440mm, and the width L=180mm. The internal material of the prototype absorbing material is uniformly distributed, and the corresponding electromagnetic parameters include the dielectric constant ε ph =11-j5.5 and permeability μ=1, the corresponding prototype frequency is 5GHz.

[0112] Structural impedance analysis of the prototype f...

Embodiment 2

[0117] Prototype band high-performance absorber:

[0118] First, select a high-performance absorber in the prototype band. The absorbing structure is a cubic cone structure. The corresponding prototype absorbing material is a magnetic loss absorbing material. The absorbing particles are carbonyl iron, and the volume addition ratio is 20%. The prototype absorbing material mainly includes two layers. Taking a single structural unit of the material as an example, the structural dimensions mainly include the upper end height H1=200mm, the lower end height H2=20mm, the total height 220mm, and the width L=90mm. At this time, the upper end angle θ=2*arctan(0.225)°. The internal material of the prototype absorbing material is uniformly distributed, and the corresponding electromagnetic parameters include the dielectric constant ε ph =10.63-j0.47 and permeability μ ph =2.28-j1.18, the corresponding prototype frequency is 5GHz, and the scaling factor is set to 2.

[0119] Structural im...

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Abstract

The invention discloses a scaling-theory-based design method of high-performance absorber. The method comprises: S1, on the basis of a prototype wave-absorbing material, corresponding electromagneticparameters and a corresponding prototype frequency are obtained, wherein the electromagnetic parameters include a dielectric constant and a magnetic permeability; S2, according to a reflectivity calculation theory of multi-layer materials, impedance characteristics and changing rule functions of all layers of materials are analyzed by combining the electromagnetic parameters and the prototype frequency of the prototype wave-absorbing material, thereby obtaining an impedance characteristic function; and on the basis of a scaling theory, a scaling material having the shape same as the prototypewave-absorbing material is prepared and scaling electromagnetic parameters and thicknesses of all layers of materials are theoretically designed based on the impedance characteristic parameters; S3, ascaling frequency coefficient and a shape ratio factor are determined to obtain a material prescription meeting the impedance characteristic; and S4, a needed high-performance absorber is constructedby using the material prescription. The method has the following advantage: the quick design of a broadband absorbing material is realized.

Description

technical field [0001] The invention relates to the technical field of absorber design, in particular to a high-performance absorber design method based on scaling theory. Background technique [0002] The design of high-performance absorbers is an important step in the realization of absorbers and the basis for the subsequent preparation of high-performance absorbers. At present, high-performance absorbers are mainly reflected in the characteristics of "thin", "light", "wide", and "strong", and the most widely used absorbers mainly include two characteristics of light weight and strong absorption. Structural absorbers are the most common high-performance absorbers. They are usually manufactured by molding or cutting. They have the characteristics of bearing and realizing the functions of components. In the design, adaptive geometric structures are used to achieve impedance matching characteristics. The designed absorbing material usually needs to consider two aspects of st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/00H01Q17/00
Inventor 许勇刚袁黎明王晓冰梁子长
Owner SHANGHAI RADIO EQUIP RES INST
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