Transmission type artificial electromagnetic surface and design method thereof

A technology of artificial electromagnetic surface and design method, applied in the direction of electrical components, antennas, etc., can solve the problem of reducing the target scattering cross-sectional area, achieve the effect of reducing the back-scattering cross-sectional area, achieving dual functionality, and thin thickness

Inactive Publication Date: 2017-08-25
SOUTHEAST UNIV
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Problems solved by technology

Therefore, traditional artificial electromagnetic surfaces c

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  • Transmission type artificial electromagnetic surface and design method thereof
  • Transmission type artificial electromagnetic surface and design method thereof
  • Transmission type artificial electromagnetic surface and design method thereof

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[0034] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0035] The transmission-type artificial electromagnetic surface of the present invention not only can be invisible in the required frequency band, but also has the characteristics of high wave penetration in the low frequency band, and has a better stealth effect than the traditional FSS. Such as Figure 1a , the transmission type artificial electromagnetic surface includes a dielectric substrate 2, a random surface 1 covering its upper surface, and a frequency selective surface 3 covering its lower surface.

[0036] The dielectric substrate 2 can be a lightweight foam material with a thickness h, and using foam as a medium greatly reduces the quality of the entire artificial electromagnetic surface.

[0037] The random surface 1 is a unit array formed by random and uniform arrangement of three basic units 11 of different sizes. According to t...

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Abstract

The invention discloses a transmission type artificial electromagnetic surface and a design method thereof. The transmission type artificial electromagnetic surface comprises a medium substrate, a random surface covering an upper surface of the medium substrate, and a frequency selection surface covering a lower surface of the medium substrate, wherein the random surface is an unit array composed of three-different-dimension basic units which are uniformly arranged in a random mode, and the frequency selection surface is a structural array formed by same square ring units having branch knots. The transmission type artificial electromagnetic surface is advantaged in that composite high frequency stealth and low frequency wave permeability functions are realized, and small thickness, light weight and easy processing are realized; the method comprises steps that (1), a traditional random surface design method is employed to design structural dimensions and spatial arrangement of each basic unit forming the random surface; (2), the square ring units having the branch knots are selected to form the frequency selection surface; and (3), basic composite units are constructed, and the structural dimensions of each unit are adjusted through electromagnetic simulation till high wave permeability and X wave band stealth requirements of the low frequency are satisfied.

Description

technical field [0001] The invention relates to an artificial electromagnetic surface and a design method thereof, in particular to a transmission type artificial electromagnetic surface and a design method thereof, and belongs to the technical field of radar stealth and new artificial electromagnetic materials. Background technique [0002] New artificial electromagnetic materials, also known as metamaterials, are composed of subwavelength unit structure arrangements, and the arrangement of units can be periodic or aperiodic. Matter in nature is composed of a large number of microscopic particles such as atoms, molecules or ions, and the basic properties of matter are determined by the characteristics of these microscopic particles and their arrangement in space. The sub-wavelength units that constitute new artificial electromagnetic materials are similar to the roles played by atoms, molecules or ions in the natural substances they constitute. Unlike these microscopic part...

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Application Information

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IPC IPC(8): H01Q15/00
Inventor 程强王丹崔铁军
Owner SOUTHEAST UNIV
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