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Low-RCS metasurface antenna array based on coding idea and design method thereof

A metasurface and antenna array technology, applied in antennas, antenna grounding devices, design optimization/simulation, etc., can solve problems such as antenna RCS reduction

Active Publication Date: 2021-05-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a low-RCS metasurface antenna array and its design method based on the coding idea, to solve the problem of RCS reduction of the low-profile flexible control antenna in the prior art

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  • Low-RCS metasurface antenna array based on coding idea and design method thereof
  • Low-RCS metasurface antenna array based on coding idea and design method thereof
  • Low-RCS metasurface antenna array based on coding idea and design method thereof

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Embodiment Construction

[0047] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0048] Take the 4*4 metasurface antenna array as an example, refer to figure 1 , figure 2 Shown, the low RCS metasurface antenna array structure based on coding idea of ​​the present invention, it comprises:

[0049] The first dynamic scattering metal patch layer (specifically refers to the 8 diode on-state units 1 and the 8 diode off-state units 2), the first dielectric layer 3, the metal backplane layer 5, the second dielectric layer 4, and the bottom The metal feed network layer 6, 16 coaxial metal feed columns 7 and 32 switching diodes 9 sequentially laminate and press the metal layer and the dielectric layer together seamlessly;

[0050] The diode on-state unit 1 and the diode off-st...

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Abstract

The invention discloses a low-RCS metasurface antenna array based on a coding idea and a design method thereof. The antenna array comprises a first dynamic scattering metal patch layer, a first dielectric layer, a metal backboard layer, a second dielectric layer, a bottom metal feed network layer, a plurality of coaxial metal feed columns, and a plurality of switching diodes. The metal layers and the dielectric layers are sequentially and seamlessly laminated and pressed together; the plurality of coaxial metal feed columns respectively penetrate through the first dynamic scattering metal patch layer, the first dielectric layer, the metal backboard layer, the second dielectric layer and the bottom feed network layer from top to bottom; the metal backboard layer is provided with a plurality of corresponding holes which are used for being isolated from the metal feed columns. According to the invention, the scattering phase of the dynamic scattering metal layer is further changed by changing the on-off state of a switching diode, and the overall scattered field coherent offset of the antenna is realized to achieve the stealth effect while the radiation performance of the antenna is not affected.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, and in particular relates to a low-RCS metasurface antenna array based on coding ideas and a design method thereof. Background technique [0002] As an indispensable part of modern information warfare—the antenna plays an important role in the real-time communication of battlefield information. However, in practical applications, in order to ensure the normal operation of the wireless communication system, the antenna is often placed in a relatively exposed position to generate a relatively large radar cross section (Radar Cross Section, RCS), that is, strong scattering characteristics. Therefore, how to effectively reduce the RCS of the antenna has become a hot issue in the design of military low-observable radar systems. [0003] Metasurface is an artificial electromagnetic material with subwavelength structure. It has special electromagnetic properties that traditional materials do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q15/00G06F30/20
CPCH01Q1/36H01Q1/48H01Q1/50H01Q15/00G06F30/20
Inventor 陈妍何小祥杨阳胡恒燕邓燕嵇海康
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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