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Low-scattering ultra-wideband strongly coupled phased array antenna based on novel electromagnetic metamaterials

A technology of electromagnetic metamaterials and phased array antennas, applied to antenna arrays, antennas, antenna arrays, etc. that are powered separately, can solve problems such as not considering the influence of antenna radiation performance, achieve good radiation performance, and ensure the effect of radiation characteristics

Active Publication Date: 2022-08-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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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

Method used

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  • Low-scattering ultra-wideband strongly coupled phased array antenna based on novel electromagnetic metamaterials
  • Low-scattering ultra-wideband strongly coupled phased array antenna based on novel electromagnetic metamaterials
  • Low-scattering ultra-wideband strongly coupled phased array antenna based on novel electromagnetic metamaterials

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[0028] specific implementation

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

[0030] For the low-scattering ultra-wideband strongly coupled phased array antenna based on the novel electromagnetic metamaterial proposed by the present invention, two antenna units "unit 1" and "unit 2" with phase cancellation effect are respectively designed, and the two units respectively form two sub-units. array, and then together form a large array. Using the phase difference characteristics between different units, the electromagnetic waves produce phase destructive interference, suppress the electromagnetic waves in the direction of the incoming wave, and make them scatter in other directions, so as to realize the spatial expansion of electromagnetic energy, so as to reduce the RCS in the direction of the target mirror image. Purpose. The size of the RCS reduction is determined by the reflect...

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Abstract

The invention discloses a low-scattering ultra-wideband strong coupling phased array antenna based on electromagnetic metamaterials, belonging to the field of antenna engineering technology and antenna stealth. Through the design of new electromagnetic metamaterials, two basic units "unit 1" and "unit 2" with opposite reflection phases in the working frequency band 6-18GHz are obtained. Reasonable arrangement finally achieves an average 12dB RCS reduction effect within 6‑18GHz while ensuring good radiation performance.

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-wideband strongly coupled phased array antenna combined with a novel electromagnetic metamaterial. Background technique [0002] Radar Cross Section (RCS), abbreviated as RCS, is a physical quantity that characterizes 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. feature structure. Therefore, reducing the RCS of the antenna without affecting the radiation performance of the antenna is very beneficial to combat. [0003] Phased array antenna refers to an antenna that changes the shape of the antenna pattern by controlling the feed phase of the radiating element in the array antenna, and changes the maximum direction of the antenna pat...

Claims

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Application Information

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Patent Type & Authority Patents(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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