Single-passband double-sided wave-absorbing metamaterial radome, application thereof and aircraft

A single passband and radome technology, applied in the field of radomes, can solve problems such as unfavorable components stealth, and achieve the effect of reducing RCS

Active Publication Date: 2019-02-26
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the electromagnetic waves reflected by the metamaterial technology currently applied in the non-wave-transparent freq...

Method used

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  • Single-passband double-sided wave-absorbing metamaterial radome, application thereof and aircraft
  • Single-passband double-sided wave-absorbing metamaterial radome, application thereof and aircraft
  • Single-passband double-sided wave-absorbing metamaterial radome, application thereof and aircraft

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment provides a metamaterial radome 10 with single-pass band and double-sided absorbing, please refer to figure 1 and image 3 , the single-pass-band double-sided wave-absorbing metamaterial radome 10 includes a plurality of unit structures arranged sequentially in a square cycle, and each unit structure includes a dielectric layer 11 , a reflective layer 12 and a wave-absorbing layer 13 . The reflective layer 12 is arranged on one side of the medium layer 11, and the wave-absorbing layer 13 is set on the side of the medium layer 11 away from the reflective layer 12, and the reflective layer 12, the medium layer 11 and the wave-absorbing layer 13 are bonded by vinyl resin together to form a resonant cavity.

[0055] The dielectric layer 11 is made of polytetrafluoroethylene with a dielectric constant of 2.1 and a loss tangent of 0.0002, and the thickness of the dielectric layer 11 is 4.5 mm.

[0056] The reflective layer 12 is a copper reflective layer 12 w...

Embodiment 2

[0060] The difference between this embodiment and Embodiment 1 is that the dielectric layer is made of a low dielectric material with a dielectric constant of 2.0 and a loss tangent of 0.0001, and the thickness of the dielectric layer is 4.2 mm.

[0061] The reflective layer is a copper reflective layer with a total thickness of 0.08mm. The inner side length of the square ring located on the outside is 11mm, and the line width is 1.2mm; the side length of the square plate located on the inner side is 8mm.

[0062] The thickness of the wave-absorbing layer is 0.08 mm, the radius of the circumscribed circle of the outer octagonal ring is 6.2 mm, and the line width is 0.3 mm; the radius of the circumscribed circle of the inner octagonal ring is 5 mm, and the line width is 0.6 mm.

[0063] The length of the opening of the outer octagonal ring is 0.7 mm, and the length of the opening of the inner octagonal ring is 0.9 mm. Each opening is equipped with a 650-ohm chip resistor.

Embodiment 3

[0065] The difference between this embodiment and Embodiment 1 is that the dielectric layer is made of a low dielectric material with a dielectric constant of 2.2 and a loss tangent of 0.0003, and the thickness of the dielectric layer is 4.8 mm.

[0066] The reflective layer is a copper reflective layer with a total thickness of 0.1 mm. The inner side length of the square ring located on the outside is 11.5 mm, and the line width is 1.35 mm; the side length of the square plate located on the inner side is 8.8 mm.

[0067] The thickness of the wave-absorbing layer is 0.1 mm, the radius of the circumscribed circle of the outer octagonal ring is 6.8 mm, and the line width is 0.5 mm; the radius of the circumscribed circle of the inner octagonal ring is 5.4 mm, and the line width is 0.8 mm.

[0068] The length of the opening of the outer octagonal ring is 0.75 mm and the length of the opening of the inner octagonal ring is 0.95 mm. Each opening is equipped with a 750-ohm chip resis...

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Abstract

The invention provides a single-passband double-sided wave-absorbing metamaterial radome, an application thereof and an aircraft, and belongs to the technical field of radomes. The radome includes a plurality of square unit structures arranged successively and periodically, wherein each unit structure includes a dielectric layer, a reflective layer, and a wave-absorbing layer. In each unit structure, the reflective layer and the wave-absorbing layer are disposed on both sides of the dielectric layer respectively. The reflective layer is composed of a square ring and a square piece embedded therein. The wave-absorbing layer is formed by at least two octagonal ring structures embedded in one another. The mutually separate four sides of each octagonal ring structure are provided with openings. Chip resistors are disposed at the openings. The radome integrates wave transmission and stealth, and can absorb electromagnetic waves in non-wave-transmissive frequency bands to achieve a purpose of excellent transmission in the transmissive bands and high absorption in both side bands. The radome can be used as a radome at the antenna compartment in the aircraft such that the aircraft can achieve stealth in the wave-transmissive bands and absorb the waves in other bands, reducing the overall RCS of the aircraft.

Description

technical field [0001] The invention belongs to the technical field of radome, and in particular relates to a single-pass-band double-side wave-absorbing metamaterial radome, its application, and an aircraft. Background technique [0002] The existing radome uses metamaterial technology, which not only physically protects the antenna from wind, rain and lightning, but also has good selectivity in the electromagnetic properties of metamaterials for the transmission and reflection of electromagnetic waves, which can selectively allow specific The electromagnetic waves in the frequency band pass through, while the electromagnetic waves in other frequency bands show total reflection characteristics and have better filtering characteristics. [0003] However, the electromagnetic waves reflected by the metamaterial technology currently applied in the non-wave-transparent frequency band have a greater impact on the backscattering RCS of the component, which is not conducive to the ...

Claims

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Application Information

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IPC IPC(8): H01Q1/42H01Q17/00H01Q15/00H01Q1/27
CPCH01Q1/27H01Q1/42H01Q15/0013H01Q17/008
Inventor 夏云尹生邹如荣
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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