Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Broadband wave-absorbing material based on sub-wavelength metal structures

A technology of metal structure and absorbing material, applied in electrical components, magnetic field/electric field shielding, antenna and other directions, can solve the problems of narrow absorbing frequency band, large quality, weak absorption, etc., to achieve strong absorption, simple production, enhanced loss effect Effect

Active Publication Date: 2014-04-09
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF10 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of traditional absorbing materials such as large mass, weak absorption and narrow absorption frequency band of "perfect absorption", this invention proposes a new absorbing material based on sub-wavelength metal structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Broadband wave-absorbing material based on sub-wavelength metal structures
  • Broadband wave-absorbing material based on sub-wavelength metal structures
  • Broadband wave-absorbing material based on sub-wavelength metal structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In the present invention, dielectric substrates coated with subwavelength metal structures of different shapes are respectively bonded on the upper and lower surfaces of traditional absorbing materials to form a three-layer structure. The upper surface of the first substrate is covered with periodically arranged rectangular metal structures; the second substrate is a sheet of traditional wave-absorbing material; the upper surface of the third substrate is covered with periodically arranged "back" Zigzag-shaped metal structure; every four rectangular metal structures on the first base material and one "back"-shaped metal structure on the third base material form a periodic unit, and the second base material is separated therebetween.

[0026] Both the first base material and the third base material are FR-4 materials, and the dielectric constant is ε=4.0-4.5.

[0027] The thickness of the first substrate is 0.127mm, and the thickness of the third substrate is 0.4mm to 0....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a broadband wave-absorbing material based on sub-wavelength metal structures, and belongs to the field of microwave absorbing materials. The broadband wave-absorbing material is divided into three layers from top to bottom, namely a first dielectric substrate, a traditional wave-absorbing material substrate and a second dielectric substrate, wherein the first dielectric substrate is covered with rectangular metal structures which are periodically arrayed; the second dielectric substrate is covered with periodically-arrayed metal structures shaped like a Chinese character 'Hui'. On the basis of a traditional wave-absorbing material, the periodic sub-wavelength metal structures are introduced; the electromagnetic wave loss effect of the traditional wave-absorbing material is improved according to the local electromagnetic wave control characteristics of the metal structures; broad bands can be strongly absorbed by virtue of double-layer metal structures. The broadband wave-absorbing material can be used for radar stealth, electromagnetic compatibility, electromagnetic shielding and the like.

Description

technical field [0001] The invention belongs to the design field of microwave absorbing materials, and specifically relates to the design of novel absorbing materials based on sub-wavelength metal structures. Background technique [0002] Nowadays, people are developing and using electromagnetic waves more and more widely. Satellite communication, radar detection, mobile wireless, etc. all use electromagnetic waves as the medium for signal and energy transmission. However, electromagnetic radiation also has its negative effects. For example, the interference of electromagnetic waves will affect the quality of communication and deteriorate the performance of instruments and circuits; electromagnetic radiation will harm human health and affect the environment. deal with. In addition, in the field of national defense and military affairs, as a radar stealth technology to improve the survivability and penetration capabilities of weapon systems and avoid being discovered, identi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00H05K9/00
Inventor 董小春王锐余金清杜春雷邓启凌高洪涛袁桂山史立方
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com