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Absorbing and transmitting integrated material with broadband wave-transmitting window

A wave-transmitting and window-based technology, applied in the field of artificial metamaterials, can solve the problems of high processing difficulty and achieve the effects of simple processing, low cost and high symmetry

Active Publication Date: 2020-03-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

At present, there are wave-absorbing-transparent-absorbing artificial electromagnetic materials with broadband wave penetration, but most of them adopt three-dimensional structures, which are difficult to process and are single-polarized materials.

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  • Absorbing and transmitting integrated material with broadband wave-transmitting window
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  • Absorbing and transmitting integrated material with broadband wave-transmitting window

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0024] An absorbing and permeable integrated material with a broadband wave-transparent window, comprising n×n structural units, such as figure 1 As shown, the structural unit includes an impedance layer 1 and a frequency selective surface layer 6, the distance D between the frequency selective surface layer and the impedance layer is 18mm, and the middle is air; the size of the impedance layer is 30mm×30mm, Including the first metal layer 2, the first dielectric layer 3 and the second metal layer 4; the structure of the first metal layer 2 and the second metal layer 4 is the same, and the second metal layer is centered by the first metal layer The origin is rotated by 90°, the first metal layer 2 and the second metal layer 4 are respec...

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Abstract

The invention provides an absorbing and transmitting integrated material with a broadband wave-transmitting window, and belongs to the technical field of artificial metamaterials. The absorbing and penetrating integrated material is composed of an impedance layer and a frequency selective surface layer, the impedance layer is composed of metal layers which are arranged in the centers of the two faces of a dielectric layer respectively and are of special structures, one metal layer is obtained by rotating the other metal layer by 90 degrees, and the center of the metal layer is designed to be of an interdigital structure; the frequency selection layer is provided with three layers of metal to achieve the effect of a three-order filter. Broadband wave-absorbing-wave-transmitting-wave-absorbing effects are achieved through combination of the wave-absorbing band and the wave-transmitting integrated material, the rectangularity of the wave-transmitting band of the wave-absorbing and wave-transmitting integrated material is high, and the transition band of the wave-transmitting band and the wave-absorbing band is narrow. In addition, the frequency responses are almost the same under theincidence of horizontal polarized waves and vertical polarized waves, and the dual-polarization characteristic is achieved.

Description

technical field [0001] The invention belongs to the technical field of artificial metamaterials, and in particular relates to an absorbing and penetrating integrated material with a broadband wave-transmitting window. Background technique [0002] In modern military, electromagnetic stealth technology is one of the important indicators for evaluating military equipment. The traditional means to realize electromagnetic stealth are as follows: 1. Adding absorbing materials to the shell of military equipment, so that the military equipment can absorb the electromagnetic waves emitted by enemy radars and reduce reflection; 2. Design special shields for military equipment based on electromagnetic scattering theory The shape reduces the radar cross section. However, neither of these approaches works well for antenna cloaking. Antenna is one of the important scattering sources of military equipment, but applying absorbing material on the surface of the antenna or changing the sha...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0013H01Q17/00
Inventor 田径李睿明胡皓全唐璞陈波雷世文杨伟陆平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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