2.5-dimensional broadband miniaturized frequency selection surface based on buckle lock structure

A technology of frequency selection surface and frequency selection, which is applied in the direction of electrical components, antennas, etc., can solve the problems of miniaturization, frequency selection surface working bandwidth reduction, etc., and achieve the effect of expanding working bandwidth, enhancing coupling, and increasing the number of units

Active Publication Date: 2021-12-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

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Problems solved by technology

Similar to the miniaturization of the unit by bending the metal patch, the increase in the degree of miniaturization often results in a reduction in the operating bandwidth of the frequency selective surface

Method used

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  • 2.5-dimensional broadband miniaturized frequency selection surface based on buckle lock structure
  • 2.5-dimensional broadband miniaturized frequency selection surface based on buckle lock structure
  • 2.5-dimensional broadband miniaturized frequency selection surface based on buckle lock structure

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] The present invention provides a 2.5-dimensional broadband miniaturized frequency selective surface based on a snap-lock structure, including M×N frequency selective units arranged periodically, M≥5, N≥5, and the frequency selective surface unit is a 2.5-dimensional structure. The adjacent units are staggered to form a snap-lock structure. The structure of the frequency selective unit is as follows figure 1 shown.

[0025] The single frequency selection unit includes a medium layer and a first patch layer and a second patch layer respectively arranged on opposite surfaces of the medium layer.

[0026] The material of the dielectric layer is FR4 material with a relative permittivity of 4.3 and a loss tangent of 0.025. The shape is square, the side length is p=6.2mm, and the thickness is h=1mm.

[0027] The structure of the first patch layer is as follows Fig...

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Abstract

The invention discloses a 2.5-dimensional broadband miniaturized frequency selection surface based on a buckle lockstructure. The 2.5-dimensional broadband miniaturized frequency selection surface is characterized in that each frequency selection unit comprises a dielectric layer, a first metal patch layer, a second metal patch layer and a metalized via hole, wherein the first patch layer comprises a plurality of strip-shaped patches and annular patches, the strip-shaped patches are arranged in the direction parallel to one side of the dielectric layer, the first patch layer issymmetrically distributed along perpendicular bisector parallel to one side of the dielectric layer, and comprises a first patch group, a second patch group and a third patch group, and the second patch layer and the first patch layer have the same structure and are in 90-degree rotational symmetry about the normal direction of the dielectric layer. According to the invention, the patches of the metal patch layer are arranged in parallel, and the frequency selection units are arranged in a staggered manner through simple translation to form a buckle lock structure, so that the bandwidth of the frequency selection surface is expanded while the miniaturization design is realized.

Description

technical field [0001] The invention relates to the field of electromagnetic field and microwave technology, and mainly relates to a 2.5-dimensional broadband miniaturized frequency selective surface based on a snap-lock structure. Background technique [0002] The frequency selective surface is an electromagnetic periodic structure with filtering characteristics, which has selective characteristics for electromagnetic waves with different operating frequencies, polarization modes and incident angles. [0003] The ideal frequency selective surface is an infinite periodic structure. In practical applications, the unit miniaturization design of the frequency selective surface is required, so that a sufficient number of units can be assembled in a limited area to maintain the characteristics of the frequency selective surface. In addition, the miniaturization design is an effective idea to improve the polarization and angular stability of the frequency selective surface. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0013
Inventor 邓燕杨阳何小祥贾明乾陈妍胡恒燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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