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Ultralow-profile low-scattering ultra-wideband phased-array antenna based on electromagnetic metamaterial loading

An electromagnetic metamaterial and ultra-broadband technology, which is applied in the field of antenna engineering to achieve the effect of achieving scattering, broadening the scanning angle range and reducing antenna scattering.

Active Publication Date: 2021-02-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent does not pay too much attention to the profile height and scanning angle range of the phased array, and the antenna profile height reaches 0.42 high-frequency wavelengths

Method used

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  • Ultralow-profile low-scattering ultra-wideband phased-array antenna based on electromagnetic metamaterial loading
  • Ultralow-profile low-scattering ultra-wideband phased-array antenna based on electromagnetic metamaterial loading
  • Ultralow-profile low-scattering ultra-wideband phased-array antenna based on electromagnetic metamaterial loading

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Embodiment 1

[0028] refer to Figure 1 to Figure 2 , Embodiment 1 is composed of a layer of periodic structure printed with closely arranged even units, using periodic boundary conditions to simulate the simulation of the present invention in an infinite array environment. The antenna unit structure of the present invention is described as follows: an unbalanced feeding structure (1) of the antenna; two metal short-circuit posts (2); a metal floor (3) with a certain thickness; a medium for supporting above the metal floor Substrate (4); the dipole radiating unit (5) of the strong capacitive coupling structure printed on the upper surface of the above-mentioned supporting medium substrate, and the two metal short-circuit columns are respectively arranged on the left and right arms of the dipole radiating unit; The first wide-angle impedance matching layer (6) above the substrate; the resistive printing medium layer (7) above the first wide-angle impedance matching layer; the second wide-ang...

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Abstract

The invention discloses an ultralow-profile low-scattering ultra-wideband phased-array antenna based on electromagnetic metamaterial loading, which realizes E-plane + / -70-degree scanning and H-plane + / -60-degree scanning in a 6-18GHz broadband, and the profile height of the ultralow-profile low-scattering ultra-wideband phased-array antenna is only 0.28 high-frequency (18GHz) wavelength. The loaded electromagnetic metamaterial is composed of a split ring periodic structure, an I-shaped resistive patch, an intersecting long-strip periodic structure and a plurality of wide-angle impedance matching layers, and through the integrated design of the electromagnetic metamaterial and the phased-array antenna, the phased-array antenna has the ultra-wide-band and ultra-wide-angle scanning characteristic and meanwhile has the remarkably low profile height. In addition, the cross polarization RCS of the phased-array antenna is remarkably reduced within the full-frequency range of the working frequency of the phased-array antenna, and meanwhile, the radiation efficiency of the phased-array antenna is kept above 95%.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, in particular to a low-profile, low-scattering ultra-wide bandwidth angle-scanning phased antenna array system, specifically a low-profile antenna array system based on strong mutual coupling effects loaded with electromagnetic metamaterials , with good scattering characteristics, can realize phased antenna array with ultra-wide bandwidth angular scanning. It is especially suitable for platforms that require antennas with good stealth performance and low profile characteristics, and can achieve ultra-wide bandwidth angular scanning. Background technique [0002] With the development of information warfare, especially the rapid progress of radar detection technology, stealth technology occupies an increasingly important position in modern electronic warfare. Radar Cross Section (Radar Cross Section), referred to as RCS, is an important indicator to measure the stealth performance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q1/38H01Q21/06
CPCH01Q1/38H01Q15/0086H01Q21/062
Inventor 杨仕文张哲晨黄明屈世伟陈益凯胡俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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