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Absorption and transmission integrated frequency selective surface with high-frequency broadband wave absorption and low-frequency wave transmission functions

A frequency selective surface, broadband technology, applied in the field of radome and electromagnetic shielding, wave absorption and wave transmission integrated frequency selective surface, can solve the problem of poor absorption characteristics and so on

Inactive Publication Date: 2021-05-18
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

They generally suffer from poor absorption properties

Method used

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  • Absorption and transmission integrated frequency selective surface with high-frequency broadband wave absorption and low-frequency wave transmission functions
  • Absorption and transmission integrated frequency selective surface with high-frequency broadband wave absorption and low-frequency wave transmission functions
  • Absorption and transmission integrated frequency selective surface with high-frequency broadband wave absorption and low-frequency wave transmission functions

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, embodiment of the present invention and effect are further described:

[0030] refer to figure 1 , from top to bottom in this embodiment are: top absorbing layer 1, middle resonant layer 3 and bottom resonant layer 5, each layer includes m×n metal patch units, where m≥2, n≥2. A first dielectric substrate 2 is provided between the top absorption layer 1 and the middle resonant layer 3, the upper surface of the first dielectric substrate 2 is in contact with the top absorption layer 1, and the lower surface of the first dielectric substrate 2 is in contact with the middle layer 3; A second dielectric substrate 4 is provided between the intermediate resonant layer 3 and the bottom resonant layer 5, the upper surface of the second dielectric substrate 4 is in contact with the intermediate resonant layer 3, and the lower surface of the second dielectric substrate 4 is in contact with the bottom resonant layer 5. connected; the...

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Abstract

The invention discloses an absorption and transmission integrated frequency selective surface with high-frequency broadband wave absorption and low-frequency wave transmission functions; the surface comprises a top absorption layer, a middle resonance layer and a bottom resonance layer; a first dielectric substrate is arranged between the top absorption layer and the middle resonance layer, and a second dielectric substrate is arranged between the middle resonance layer and the bottom resonance layer. Each layer comprises a plurality of metal patch units, and each unit of the top absorption layer is composed of a resistive Jerusalem cross structure; each unit of the middle resonance layer is composed of square ring type metal strips, circular metal sheets and a square metal strip, the square metal strips are connected with the circular metal sheets through rotational symmetry, and the circular metal sheets are distributed in an axial symmetry mode; each unit of the bottom resonance layer is formed by combining circular metal sheets and square metal strips, and the circular metal sheets and the square metal strips are respectively distributed in an axial symmetry manner; the top absorption layer is connected with the first dielectric substrate; and the middle resonance layer, the second dielectric substrate and the bottom resonance layer are connected. The surface is excellent in wave-absorbing performance.

Description

technical field [0001] The invention belongs to the technical field of antenna stealth, and mainly relates to a wave-absorbing and wave-transmitting integrated frequency selection surface, which can be used for radome and electromagnetic shielding. Background technique [0002] A frequency selective surface (FSS) is a two-dimensional periodic structure formed by specific units and their arrangement, which exhibits good propagation performance in specific frequency bands and near total reflection in other frequency bands. Among them, the unit shape, unit spacing, arrangement method, multi-layer number, medium loading method, etc. all have a great influence on the frequency response of FSS. Frequency selective surfaces are used in a wide variety of applications, the most important of which are radome surfaces. A radome is often used to protect the antenna from the physical environment, and in the reduction of the radar cross section (RCS), the detection of the antenna by othe...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q1/42
CPCH01Q1/42H01Q15/00
Inventor 谢宇平侯新宇郭太行叶琰
Owner SHANGHAI UNIV
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