A Multifunctional Metasurface and Stealth Antenna

A super-surface, multi-functional technology, applied in antennas, waveguide horns, electrical components, etc., can solve the problems of large electrical size, low efficiency, and inability to adjust the amplitude, and achieve the effects of small electrical size, high efficiency, and light weight

Active Publication Date: 2022-03-18
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing technology also has disadvantages such as large electrical size, narrow band, low efficiency, and inability to adjust the amplitude.

Method used

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  • A Multifunctional Metasurface and Stealth Antenna
  • A Multifunctional Metasurface and Stealth Antenna
  • A Multifunctional Metasurface and Stealth Antenna

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The embodiment of the present invention provides a multifunctional metasurface, which is used to realize a high-gain antenna with adjustable amplitude and phase, beam deflection or radar cross section (RCS) reduction under horn feed or plane wave excitation. Its structural units are figure 1 As shown, the metasurface unit includes a total of five metal layers (the first to fifth metal layers from left to right in the figure) and four dielectric substrates (first to fourth dielectric substrates), the first and second metal layers Both the fourth and fifth metal layers are provided with two parallel rectangular metal patches, and the lengths of the two rectangular metal patches are the same. The metal patches of the first metal layer and the second metal layer have the same parameters (position from the center of the unit, patch width) ex...

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Abstract

The invention discloses a multifunctional metasurface and a stealth antenna. The unit of the metasurface consists of five metal layers in sequence and four layers of dielectric substrates between the metal layers, wherein the first, second, fourth and fifth metal layers are respectively There are two parallel and equal-length rectangular metal patches; the rectangular metal patches of the first and second metal layers have different lengths, and other parameters are the same, and only the patch lengths of the fourth and fifth metal layers are different; The metal patches of the four metal layers are orthogonal to each other; the third metal layer is provided with a C-shaped metal split ring; the metasurface realizes the transmission function when the y-polarized electromagnetic wave is incident in the normal direction, and when the x-polarized electromagnetic wave is incident in the normal direction The beam deflection function is realized, and the radar scattering cross-section reduction function is realized when the y-polarized electromagnetic wave is incident in the reverse direction. The invention can independently realize three functions of high-performance antenna, beam deflection and radar scattering cross-section reduction, can be applied to realize stealth antenna in some specific environments, and has the advantages of small electrical size, high gain and the like.

Description

technical field [0001] The invention belongs to the field of novel artificial electromagnetic materials and wireless communication, and in particular relates to a multifunctional metasurface integrating transmission, reflection and radar scattering cross-section reduction, and a stealth antenna realizing broadband and low sidelobe. Background technique [0002] With the continuous exploration of metamaterials, researchers have also discovered some shortcomings of metamaterials. Due to the shortcomings of three-dimensional metamaterials, such as complex structure, high manufacturing cost, bulky volume and high loss, it has greatly hindered its wide application. Until 2011, a new type of artificial microstructure defined as a metasurface was first proposed by the team of Professor Capasso of Harvard University in the United States. It is a two-dimensional form of three-dimensional metamaterials. The sub-wavelength size structure is obtained. By introducing phase discontinuit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q13/02
CPCH01Q15/0086H01Q13/02
Inventor 伍瑞新李锡明郗翔陈建吴华兵
Owner NANJING UNIV
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