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A low-rcs metasurface antenna array based on coding idea and its design method

A metasurface, antenna array technology, applied in antennas, antenna grounding devices, design optimization/simulation, etc., can solve problems such as antenna RCS reduction, and achieve the effect of reducing RCS, low profile characteristics, and reducing profile

Active Publication Date: 2022-05-03
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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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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  • A low-rcs metasurface antenna array based on coding idea and its design method
  • A low-rcs metasurface antenna array based on coding idea and its design method
  • A low-rcs metasurface antenna array based on coding idea and its design method

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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 coding ideas and a design method thereof. The antenna array includes: a first dynamic scattering metal patch layer, a first dielectric layer, a metal backplane layer, a second dielectric layer, and a bottom The metal feed network layer, a plurality of coaxial metal feed posts and a plurality of switch diodes are sequentially laminated and pressed together seamlessly with the metal layer and the dielectric layer; the plurality of coaxial metal feed posts Run through the first dynamic scattering metal patch layer, the first dielectric layer, the metal backplane layer, the second dielectric layer and the bottom feed network layer from top to bottom; the metal backplane layer is provided with multiple Corresponding holes are used for isolation from metal feed posts. The invention changes the on-off state of the switch diode, and then changes the scattering phase of the dynamic scattering metal layer, and realizes the coherent cancellation of the overall scattering field of the antenna without affecting the radiation performance of the antenna to achieve the effect of stealth.

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 Patents(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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