P-band three-dimensional broadband composite wave-absorbing metamaterial and preparation method thereof

A broadband and P-band technology is applied in the field of P-band three-dimensional broadband composite absorbing metamaterial and its preparation, which can solve the problems of undocumented absorbing effect and high energy consumption of absorbing materials, and is beneficial to engineering applications, The effect of good absorption effect and easy wave absorption performance

Active Publication Date: 2021-07-20
湖南工商大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method consumes a lot of energy, and there is no record of the absorbing effect of the absorbing material in the P-band

Method used

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  • P-band three-dimensional broadband composite wave-absorbing metamaterial and preparation method thereof
  • P-band three-dimensional broadband composite wave-absorbing metamaterial and preparation method thereof
  • P-band three-dimensional broadband composite wave-absorbing metamaterial and preparation method thereof

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Embodiment 1

[0046] In this embodiment, the P-band three-dimensional broadband composite wave-absorbing metamaterial is composed of metal-type electromagnetic metamaterial structural units based on magnetic metal iron, which are periodically vertically arranged on the manganese-zinc ferrite dielectric substrate; the metal-type electromagnetic metamaterial The structural unit consists of two square metal rings of different sizes placed on the front and back sides of an FR4 dielectric substrate with a thickness of 2mm and a dielectric constant of 4.2; the thickness of the square metal rings is 35 microns, and the outer length of the front square ring is 55mm, the inner side length is 50mm; the outer side length of the reverse square ring is 52mm, and the inner side length is 45mm.

[0047] The preparation method of the P-band three-dimensional broadband composite wave-absorbing metamaterial in this embodiment includes the following steps:

[0048] (1) Ferrite material cutting

[0049] Cut the...

Embodiment 2

[0061] In this embodiment, the P-band three-dimensional broadband composite wave-absorbing metamaterial is periodically vertically arranged on the nickel-zinc ferrite dielectric substrate by the structural units of the metal-type electromagnetic metamaterial based on magnetic metal nickel; the metal-type electromagnetic metamaterial The structural unit is composed of two square metal rings of different sizes placed on the front and back sides of the FR4 dielectric substrate with a thickness of 2.5mm and a dielectric constant of 4.2; the thickness of the square metal ring is 30 microns, and the outer side of the front square ring The length is 55mm, and the length of the inner side is 50mm; the length of the outer side of the reverse square ring is 52mm, and the length of the inner side is 45mm.

[0062] The preparation method of the P-band three-dimensional broadband composite wave-absorbing metamaterial in this embodiment includes the following steps:

[0063] (1) Ferrite mat...

Embodiment 3

[0076] In this embodiment, the P-band three-dimensional broadband composite wave-absorbing metamaterial is periodically erected on the magnesium-zinc ferrite dielectric substrate by the structural unit of the metal-type electromagnetic metamaterial based on magnetic metal cobalt; the structural unit of the metal-type electromagnetic metamaterial Two square metal rings of different sizes are placed on the front and back sides of an FR4 dielectric substrate with a thickness of 2.5mm and a dielectric constant of 3.5; the thickness of the square metal ring is 25 microns, and the outer length of the front square ring is 55mm, the inner side length is 45mm; the outer side length of the reverse square ring is 50mm, and the inner side length is 42mm.

[0077] The preparation method of the P-band three-dimensional broadband composite wave-absorbing metamaterial in this embodiment includes the following steps:

[0078] (1) Ferrite material cutting

[0079] Cut the ferrite dielectric ma...

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Abstract

The invention discloses a P-band three-dimensional broadband composite wave-absorbing metamaterial and a preparation method thereof. The P-band three-dimensional broadband composite wave-absorbing metamaterial is formed by vertically arranging structural units of a metal type electromagnetic metamaterial based on magnetic metal on a ferrite dielectric substrate; a structural unit of the metal type electromagnetic metamaterial is formed by arranging two metal rings of different sizes on the front face and the back face of an FR4 dielectric substrate. The invention also comprises a preparation method of the P-band three-dimensional broadband composite wave-absorbing metamaterial. The P-band three-dimensional broadband composite wave-absorbing metamaterial is simple in structure, the overall thickness is smaller than 20 mm, the production cost is low, the metamaterial has good P-band broadband radar absorption performance in different polarization directions under the condition of vertical incidence of electromagnetic waves, the reflection loss in the full band of the P-band (230-1000 MHz) is all superior to-10 dB, the peak reflection loss can reach-45.05 dB. The preparation method is easy and convenient to operate, modular assembly is easy, and engineering application is facilitated.

Description

technical field [0001] The invention relates to a wave-absorbing metamaterial and a preparation method thereof, in particular to a P-band three-dimensional broadband composite wave-absorbing metamaterial and a preparation method thereof. Background technique [0002] Absorbing materials can effectively absorb and deplete incident electromagnetic wave energy, and are widely used in the fields of military radar stealth and civilian electromagnetic compatibility. The frequency of the P-band electromagnetic wave is between 0.3-1GHz, and the wavelength spans the scale of meters and decimeters. It is the main working frequency band of long-range early warning radars, but its long wavelength has great impact on the structure of absorbing materials, thickness control and electromagnetic parameter setting. severe challenge. Reducing the detectability of ultra-low frequency and long wavelength radars to weapons and equipment, and developing advanced and efficient P-band radar absorbi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00H05K9/00C08L63/00C08L61/06C08K3/08C08K5/14
CPCH01Q15/0086H01Q17/007H01Q17/004H05K9/0081C08K3/08C08K5/14C08K2201/01C08K2003/0856C08K2003/0862C08K2003/0843C08L63/00C08L61/06
Inventor 贺龙辉陈智全许辉李雪垒周华聂国政
Owner 湖南工商大学
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