A p-band three-dimensional broadband composite absorbing metamaterial and its preparation method

A wide-band, P-band technology, applied in the field of P-band three-dimensional broadband composite absorbing metamaterials and its preparation, can solve the problems of unrecorded wave-absorbing materials and high energy consumption, and achieve engineering applications, Good absorption effect and wide absorption bandwidth

Active Publication Date: 2022-07-01
湖南工商大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A p-band three-dimensional broadband composite absorbing metamaterial and its preparation method
  • A p-band three-dimensional broadband composite absorbing metamaterial and its preparation method
  • A p-band three-dimensional broadband composite absorbing metamaterial and its preparation method

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Embodiment 1

[0046] This embodiment of the P-band three-dimensional broadband composite wave-absorbing metamaterial is composed of the structural units of the metal-type electromagnetic metamaterial based on magnetic metal iron, which are periodically erected and arranged on the manganese-zinc ferrite dielectric substrate; the metal-type electromagnetic metamaterial is formed. 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 of the present embodiment comprises the following steps:

[0048] (1) Cutting of f...

Embodiment 2

[0061] In this embodiment, the P-band three-dimensional broadband composite wave-absorbing metamaterial is composed of structural units of a metal-type electromagnetic metamaterial based on magnetic metal nickel, which are periodically erected and arranged on a nickel-zinc ferrite dielectric substrate; 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 is The length is 55mm, and the inner side length is 50mm; the outer side length of the square ring on the reverse side is 52mm, and the inner side length is 45mm.

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

[0063] (1) Cutting of ferrite material

[0064] Th...

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 the magnetic metal cobalt; the structural unit of the metal-type electromagnetic metamaterial It consists 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 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 of the present embodiment comprises the following steps:

[0078] (1) Cutting of ferrite material

[0079] Th...

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Abstract

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 vertically arranged on a ferrite dielectric substrate by structural units of a metal-type electromagnetic metamaterial based on a magnetic metal. The structural unit of the metal-type electromagnetic metamaterial is composed of two metal rings of different sizes placed on the front and back sides of the FR4 dielectric substrate. The invention also includes the preparation method of the P-band three-dimensional broadband composite wave-absorbing metamaterial. The P-band three-dimensional broadband composite wave-absorbing metamaterial of the invention has a simple structure, an overall thickness of less than 20 mm, and low production cost. Under the condition of vertical incidence of electromagnetic waves, different polarization directions have good P-band broadband radar absorption performance. The reflection loss of the P-band (230 MHz-1000 MHz) in the whole frequency band is better than -10dB, and the peak reflection loss can reach -45.05dB.

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 lose incident electromagnetic wave energy, and have a wide range of applications in the fields of military radar stealth and civil 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 the long-range early warning radar, but its long wavelength brings about the structure, thickness control and electromagnetic parameter setting of the absorbing material. serious challenge. Reducing the detectability of weapons and equipment by ultra-low frequency long-wavelength radar and developing advanced and efficient P-band radar a...

Claims

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Application Information

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Patent Type & Authority Patents(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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