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Ultra-wideband-radar-based scattering-cross-section-reducing chessboard structure and ultra-wideband radar

An ultra-wideband radar, scattering cross-section technology, applied in the direction of using re-radiation, reflection/re-radiation of radio waves, measurement devices, etc., can solve problems such as increasing the complexity of shape design, difficulty in bandwidth, and restricting applications, and achieve good RCS reduction Effect, reduce the effect of double station RCS

Active Publication Date: 2018-12-07
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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  • Ultra-wideband-radar-based scattering-cross-section-reducing chessboard structure 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 technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0040] In an embodiment of the present invention, as shown in Figs. 1(a) and 1(b), a schematic diagram of the physical mechanism of multiple phase cancellation is given. When a plane wave is incident on the surface of a metamaterial composed of M×N crystal lattices, the surface arranged in a matrix array will produce M×N reflected waves. The re...

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Abstract

The invention provides an ultra-wideband-radar-based scattering-cross-section-reducing chessboard structure and an ultra-wideband radar. The chessboard structure comprises a metal floor and M*N finiteaperiodic tile units fixed on the metal floor. The finite aperiodic tile units consist of dielectric plates and metal pasters arranged on the dielectric plates; and the metal pasters include metal ring pasters distributed in an array manner.

Description

Technical field [0001] The invention belongs to the field of RCS reduction in electromagnetic field and microwave technology, and specifically relates to an ultra-wideband RCS reduction checkerboard structure based on a multiple 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 characteristics lead to some interesting phenomena, such as negative refractive index, subwavelength imaging, field enhancement, and abnormal tunneling effects. In the past few years, new devices based on these characteristics, such as ultra-thin see-through mirrors, invisible cloaks, plasma waveguides, and polarization converters, have been manufactured and tested. One potential application of metasurfaces is to reduce the scattering field of metal objects. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(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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