Low-scattering ultra-wideband strong-coupling phased-array antenna based on novel electromagnetic metamaterial

A technology of electromagnetic metamaterials and phased array antennas, which is applied in the directions of antenna arrays, antennas, and antenna arrays that are energized separately.

Active Publication Date: 2021-11-23
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, the average RCS reduction value in the reduced frequency band is less than 5dB in this method, and the influence on the antenna radiation performance when it is actually applied to the antenna is not considered.
[0007] In the patent with the publication number CN 107331977 A, a low-profile low-RCS ultra-wide bandwidth angle-scanning strong-coupling phased array antenna based on a polarization conversion material is proposed. Symmetrical arrangement, so that the electromagnetic waves cancel each other, reduce the RCS of the antenna in a wide frequency band, but only a small number of frequency points RCS reduction value is greater than 10dB

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  • Low-scattering ultra-wideband strong-coupling phased-array antenna based on novel electromagnetic metamaterial
  • Low-scattering ultra-wideband strong-coupling phased-array antenna based on novel electromagnetic metamaterial
  • Low-scattering ultra-wideband strong-coupling phased-array antenna based on novel electromagnetic metamaterial

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Embodiment Construction

[0028] specific implementation plan

[0029] The present invention will be described in further detail below in combination with specific embodiments and accompanying drawings.

[0030] The low-scattering ultra-broadband strong-coupling phased array antenna proposed by the present invention is based on a new type of electromagnetic metamaterial, and two antenna units "unit 1" and "unit 2" with phase cancellation effect are respectively designed, and the two units form two sub-units respectively. Array, and then together form a large array. Using the phase difference characteristics between different units, the electromagnetic wave produces phase destructive interference, suppresses the electromagnetic wave in the incoming wave direction, makes it scatter in other directions, and realizes the spatial expansion of electromagnetic energy, thereby reducing the RCS in the direction of the target image. Purpose. The size of the RCS reduction is determined by the reflection phase d...

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Abstract

The invention discloses a low-scattering ultra-wideband strong-coupling phased-array antenna based on an electromagnetic metamaterial, and belongs to the field of antenna engineering technology and antenna stealth. Through the design of the novel electromagnetic metamaterial, two basic units (unit 1) and (unit 2) with opposite reflection phases in the working frequency band of 6-18GHz are obtained, and through reasonable arrangement of sub-arrays formed by the units and the units 2, the average 12dB RCS reduction effect is realized in the frequency band of 6-18GHz while the good radiation performance is finally ensured.

Description

technical field [0001] The invention belongs to the field of antenna engineering technology and antenna stealth, and relates to an artificial electromagnetic metasurface, in particular to an ultra-broadband strong coupling phased array antenna combined with novel electromagnetic metamaterials. Background technique [0002] Radar Cross Section (Radar Cross Section), abbreviated as RCS, characterizes a physical quantity of the echo intensity generated by the target under the irradiation of plane waves. In today's electronic warfare, stealth has become an important part, and the antenna itself has strong scattering characteristic structure. Therefore, it is very beneficial to combat to reduce the RCS of the antenna without affecting its radiation performance. [0003] A phased array antenna refers to an antenna that changes the shape of the antenna pattern by controlling the feeding phase of the radiating elements in the array antenna, and changes the maximum direction of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q1/38H01Q1/48H01Q1/50H01Q21/06
CPCH01Q15/0086H01Q15/002H01Q15/0026H01Q1/38H01Q1/48H01Q1/50H01Q15/0046H01Q21/062H01Q21/065
Inventor 杨仕文张昭张哲晨陈益凯屈世伟胡俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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