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Resistive film-based broadband metamaterial wave-absorbing unit and wave-absorbing material

A technology of wave absorbing material and resistive film, applied in electrical components, antennas and other directions, can solve the problems of complex processing of loading lumped elements, unfavorable large-scale application, thick thickness of wave absorber, etc., to achieve stealth effect, stable and low incidence The effect of angle, stable wave absorption characteristics

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Problems solved by technology

[0005] In the prior art, since the absorption bandwidth of the metamaterial wave absorber is relatively narrow, the way to widen its bandwidth is that the thickness of the wave absorber will be relatively thick, which is not conducive to the application in the stealth of armed equipment, etc.; The total component processing is complex and costly, which is not conducive to large-scale application

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  • Resistive film-based broadband metamaterial wave-absorbing unit and wave-absorbing material
  • Resistive film-based broadband metamaterial wave-absorbing unit and wave-absorbing material
  • Resistive film-based broadband metamaterial wave-absorbing unit and wave-absorbing material

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] 1. Absorbing unit

[0030] The structure of the absorbing unit is as figure 1 and figure 2 As shown, the absorbing unit is composed of a resistive film 2 , a dielectric plate 1 and a lower surface metal 3 . The dielectric plate 1 is a square dielectric plate 1 with a certain thickness, and a resistive film 2 is arranged on the upper surface of the dielectric plate 1. The center of the resistive film 2 and the center of the dielectric plate 1 are located on the same vertical line, and the resistive film 2 is a square resistive film. 2 and the two symmetrical sides of the resistance film 2 are provided with a semicircle with a diameter of d, and the connecting line between the centers of the two semicircles is parallel to a certain diagonal line of the square dielectric plate 1; The metal 3 on the lower surface is used as the...

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Abstract

The invention discloses a resistive film-based broadband metamaterial wave-absorbing unit and a wave-absorbing material. The wave-absorbing unit is formed by processing a resistive film; the effect ofabsorbing electromagnetic waves is achieved by changing the structure of the metamaterial wave-absorbing unit and the sheet resistance of the resistive film. When electromagnetic waves irradiate intothe metamaterial wave-absorbing unit, the electromagnetic waves can be effectively absorbed and consumed, and therefore, a broadband wave-absorbing characteristic is achieved. The metamaterial wave-absorbing units are periodically arranged to form a wave-absorbing array; the wave-absorbing array is combined with a microstrip patch antenna, so that the reduction of the RCS of the antenna can be realized on the premise of not changing the radiation performance of the microstrip patch antenna, and therefore, the purpose of the stealth of the antenna is achieved.

Description

technical field [0001] The invention relates to the field of metamaterial wave absorbers, in particular to a resistance film-based broadband metamaterial wave absorbing unit and wave absorbing material. Background technique [0002] The electromagnetic metamaterial absorber is a composite structure composed of an electromagnetic metamaterial and a dielectric substrate, which can effectively absorb incident electromagnetic waves and achieve a perfect wave absorption effect. [0003] Metamaterial wave absorber has received great attention in the research in recent years. It is a new type of wave absorbing material, which has a good application prospect in the field of electromagnetic stealth technology in military and civilian fields. Absorbing materials generally consist of periodic absorbing units to form a wave-absorbing array. The wave-absorbing unit effectively adjusts its equivalent dielectric constant and equivalent magnetic permeability by designing a sub-wavelength mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0086H01Q17/008
Inventor 孙筱枫杜国宏周芹
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