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Dual-polarization ultra-wideband three-dimensional electromagnetic wave absorber

An ultra-broadband, electromagnetic wave technology, applied in the microwave field, can solve the problems of increased thickness, limited application, narrow absorption bandwidth, etc., to achieve the effect of reducing design cost, simple processing, and easy design

Active Publication Date: 2021-12-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its narrow absorption bandwidth limits its application
In order to broaden the absorption bandwidth, the Jaumann absorber based on multiple resistive layers came into being, but its thickness was also greatly increased.

Method used

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  • Dual-polarization ultra-wideband three-dimensional electromagnetic wave absorber
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  • Dual-polarization ultra-wideband three-dimensional electromagnetic wave absorber

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Embodiment Construction

[0018] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] The present invention provides a dual-polarized ultra-broadband three-dimensional electromagnetic wave absorber. The ultra-broadband absorbing structure adopts two mutually perpendicular absorbing structures loaded with lumped resistances to build a dual-polarized ultra-broadband absorbing structure, which can Realizes ultra-wide absorbing frequency band with high absorbing rate.

[0020] The three-dimensional dual-polarized ultra-broadband wave-absorbing structure of the present invention is a periodic structure arranged in a square shape, and the wave-absorbing structure units extend along the x-axis and the y-axis with equal periods. Each absorbing structure unit includes a hollow cuboid structure surrounded by four dielectric substrates, special-shaped metal strips loaded with lumped resistors plated on the adjacent two inner surfaces of the cub...

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Abstract

The invention discloses a dual-polarization ultra-wideband three-dimensional electromagnetic wave absorber. The wave absorber comprises a plurality of wave absorbing structure units which are arranged in a square period. Each wave-absorbing structure unit comprises a hollow cuboid structure enclosed by four dielectric substrates, special-shaped metal belts which are respectively plated on two adjacent inner side surfaces of the cuboid structure and are loaded with lumped resistors, and a metal reflecting surface arranged on the bottom surface of the cuboid structure. The ultra-wide wave-absorbing frequency band with the high wave-absorbing rate can be achieved, and meanwhile the structure is small in relative thickness and light in weight.

Description

technical field [0001] The invention belongs to the field of microwave technology, and in particular relates to a dual-polarization ultra-broadband three-dimensional electromagnetic wave absorber. Background technique [0002] With the development of modern detection and jamming technology, it poses serious challenges to the survivability of radar and communication systems. Therefore, more and more work focuses on improving the stealth ability of the system. Electromagnetic wave absorbers have the functions of enhancing electromagnetic compatibility and reducing radar cross-sectional area, so they are widely used in various electronic systems. As an early classical absorber, the Salisbury absorber works by placing a resistive layer at a quarter of the operating wavelength from the metal ground. However, its narrow absorption bandwidth limits its application. In order to broaden the absorption bandwidth, the Jaumann absorber based on multiple resistive layers came into bei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/00H01Q17/008
Inventor 金城张彬超吕奇皓尹丽媛曹凯淇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY