Novel three-dimensional broadband super-light wave-absorbing material and designing method thereof

A technology of three-dimensional structure and wave-absorbing materials, which is applied to electrical components, antennas, etc., can solve problems such as unresolved wave-absorbing performance, and achieve the effects of simple and mature preparation process, low cost, and light weight

Inactive Publication Date: 2016-01-13
AIR FORCE UNIV PLA
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  • Application Information

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Problems solved by technology

At present, some designs improve the stability of the absorbing performance of radar absorbing materials for oblique incident angles b...

Method used

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  • Novel three-dimensional broadband super-light wave-absorbing material and designing method thereof
  • Novel three-dimensional broadband super-light wave-absorbing material and designing method thereof
  • Novel three-dimensional broadband super-light wave-absorbing material and designing method thereof

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Embodiment Construction

[0029] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] For the convenience of description, the present invention is regarded as a combination of a periodic array composed of M×N three-dimensional rotationally symmetrical brackets and a resistive frequency selective layer composed of M×N square resistance sheets, M is the number of rows, and N is the number of columns. Each periodic unit is composed of a square structure and four resistor plates composed of rhombus structures. The resistor sheet here is mainly composed of a resistive film. The resistance film is printed on the dielectric film with conductive carbon paste by screen printing technology, its thickness is 10-15um, and its square...

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Abstract

The invention discloses a novel three-dimensional broadband super-light wave-absorbing material and a designing method thereof. The wave-absorbing material comprises a metal baseboard, a three-dimensional rotary support and a periodic array which is constituted by square resistor discs on the upper surface. The three-dimensional rotary support is formed by a square planar resistor disc and four rhombic planar resistor discs which are connected. The four rhombic planar resistor discs are connected with four edges of the square planar resistor disc, respectively, and are folded by a certain angle alpha towards the square center along the edges of the square planar resistor disc. The edges of the square planar resistor disc are equal to those of the rhombic planar resistor discs. The square planar resistor disc, the rhombic planar resistor discs and the square resistor discs are made of resistive films. For the situation of vertical and oblique incidence of electromagnetic wave in the TM polarization manner, especially the situation of large angle of incidence of electromagnetic wave, good broadband wave-absorbing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to a novel three-dimensional structure broadband ultra-light wave-absorbing material with improved TM wave large incident angle absorption performance. Background technique [0002] Electromagnetic stealth technology can effectively control or suppress radar signature signals of targets, reduce the probability of targets being discovered, identified, tracked, and destroyed, thereby improving the survivability and combat effectiveness of weapons and equipment. Radar absorbing materials are an effective means in the field of electromagnetic stealth, and have gradually become the focus of military applications. At the same time, electronic products are becoming more and more popular, and electromagnetic radiation is almost everywhere. Electromagnetic "pollution" issues such as electromagnetic interference and electromagnetic compatibility have become issues that affect hum...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
Inventor 屈绍波沈杨马华王甲富庞永强张介秋
Owner AIR FORCE UNIV PLA
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