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Ultra-low-profile and low-scattering ultra-broadband phased array based on electromagnetic metamaterial loading

An electromagnetic metamaterial and ultra-broadband technology is applied in the field of antenna engineering to achieve the effects of reducing antenna scattering, reducing the height of the profile, and widening the range of scanning angles

Active Publication Date: 2021-07-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • 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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  • Ultra-low-profile and low-scattering ultra-broadband phased array based on electromagnetic metamaterial loading
  • Ultra-low-profile and low-scattering ultra-broadband phased array based on electromagnetic metamaterial loading
  • Ultra-low-profile and low-scattering ultra-broadband phased array 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 structure of the antenna unit of the present invention is described as follows: An unbalanced feeding structure of the antenna (1); two metal short-circuit posts (2); a metal floor with a certain thickness (3); a medium for supporting above the metal floor Substrate (4); a dipole radiating unit (5) with a strong capacitive coupling structure printed on the upper surface of the supporting medium substrate, 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-angle impedance ma...

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Abstract

The invention discloses an ultra-low-profile low-scattering ultra-broadband phased array antenna based on electromagnetic metamaterial loading, which realizes ±70° scanning of the E plane and ±60° scanning of the H plane within a wide frequency band of 6-18GHz. Its profile height is only 0.28 high frequency (18GHz) wavelengths. The loaded electromagnetic metamaterial is composed of split ring periodic structure, I-shaped resistive patch, intersecting strip periodic structure and multi-layer wide-angle impedance matching layer. Through the integrated design of electromagnetic metamaterial and phased array antenna, the The phased array antenna has a significantly low profile height while having ultra-wideband ultra-wide-angle scanning characteristics. In addition, the cross-polarized RCS of the phased array antenna itself is significantly reduced within the full frequency range of the phased array antenna's operating frequency, while the radiation efficiency of the phased array antenna remains 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 (RCS) is an important indicator to measure the stealth performance of a detected target. The size of the ra...

Claims

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Application Information

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Patent Type & Authority Patents(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