A chessboard structure based on ultra-wideband radar scattering cross section reduction and ultra-wideband radar

An ultra-wideband radar, scattering cross-section technology, applied in the direction of utilizing re-radiation, reflection/re-radiation of radio waves, instruments, etc., can solve the problems of difficult bandwidth, destroying aerodynamic layout, restricting application, etc., to reduce the dual-station RCS, good Phase cancellation effect

Active Publication Date: 2021-04-27
COMMUNICATION UNIVERSITY OF CHINA
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Problems solved by technology

However, most RAMs usually operate near the resonant frequency, and the narrow operating bandwidth limits its application
[0005] The second approach is to change the appearance of the target to reduce the scattered field in the direction of the radiation source, but this may destroy the aerodynamic layout and increase the complexity of the shape design
However, it is very difficult to extend the reduced bandwidth of RCS with this mechanism

Method used

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  • A chessboard structure based on ultra-wideband radar scattering cross section reduction and ultra-wideband radar
  • A chessboard structure based on ultra-wideband radar scattering cross section reduction and ultra-wideband radar
  • A chessboard structure based on ultra-wideband radar scattering cross section reduction and ultra-wideband radar

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[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040]In one embodiment of the present invention, as shown in Fig. 1(a), 1(b), a schematic diagram of the physical mechanism of multivariate phase cancellation is given. When a plane wave is incident on the metamaterial surface composed of M×N lattices, the surface arranged in a matrix array will generate M×N reflection waves, and the refl...

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Abstract

The invention proposes a checkerboard structure based on ultra-wideband radar scattering cross-section reduction and an ultra-wideband radar with the structure. The checkerboard structure is composed of a metal floor and M×N finite aperiodic tile units fixed on the metal floor; the finite aperiodic tile unit includes a dielectric board and a metal sticker arranged on the dielectric board sheet; the metal patch includes metal ring patches arranged in an array.

Description

technical field [0001] The invention belongs to the field of RCS reduction of electromagnetic field and microwave technology, and in particular relates to an ultra-wideband RCS reduction checkerboard structure based on a multi-element phase cancellation physical mechanism and an ultra-wideband radar using the structure. Background technique [0002] Metamaterials and metasurfaces are artificial structures designed to artificially control electromagnetic and acoustic waves, and possess some special physical properties. These properties lead to some interesting phenomena, such as negative refractive index, subwavelength imaging, field enhancement, and anomalous tunneling effect, etc. In the past few years, novel devices based on these properties, such as ultrathin see-through mirrors, invisibility cloaks, plasmonic waveguides, and polarization converters, have been fabricated and tested. One potential application of metasurfaces is to reduce the scattering fields of metallic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/00G01S7/41
CPCG01S7/41G01S13/00
Inventor 苏建勋李增瑞张晨阳
Owner COMMUNICATION UNIVERSITY OF CHINA
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