Wave-transmitting/stealth integrated metamaterial structure and radome and antenna window with same

A metamaterial and wave-transmitting technology, which is applied in the field of radome and antenna window, can solve the problems that the reflection effect of metal structure cannot be ignored, the technology is difficult to meet the demand, and the processing technology is complicated, so as to improve the electromagnetic stealth effect, reduce the thickness and weight, The effect of strong stealth performance

Active Publication Date: 2020-02-18
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of equipment stealth and anti-jamming performance requirements, the reflection effect of the frequency selective surface of the metal structure cannot be ignored, especially for the stealth design of some non-low RCS shape targets, this technology is difficult to meet the demand, and it is necessary to design New wave-transparent / stealth integrated structure with better performance
In the prior art, there are metamaterials that use metal patches, lumped resistors, or magnetic materials to load dielectric substrates to realize composite metamaterials that are both wave-transparent and stealthy, but most materials are composed of multi-layer structures, and the number of layers is relatively small. Many, thicker, resulting in complex processing and heavier weight

Method used

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  • Wave-transmitting/stealth integrated metamaterial structure and radome and antenna window with same
  • Wave-transmitting/stealth integrated metamaterial structure and radome and antenna window with same
  • Wave-transmitting/stealth integrated metamaterial structure and radome and antenna window with same

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Experimental program
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Effect test

Embodiment 1

[0047] When p=8mm, the remaining parameters of the structure are a=0.38p=3mm, b=0.75p=6mm, c=0.5p=4mm, α=30°, d=2atan(α / 2)=1.6mm, w =0.19p=1.5mm, material square resistance R is 5Ω / □,

[0048] image 3 It shows the test results of the wave transmission characteristics of the wave transmission / stealth integrated metamaterial structure provided according to Embodiment 1 of the present invention. It can be seen from the wave transmission rate curve that the passband of the structure with a wave transmission rate above 60% is 7~ 8.3GHz, bandwidth 1.3GHz, L, S-band wave transmission rate below 15%, within the range of 0-30° incident angle, it has stable wave transmission / stealth effect.

Embodiment 2

[0050] When p=7mm, the remaining parameters of the structure are a=0.39p=2.7mm, b=0.43p=3mm, c=0.43p=3mm, α=30°, d=2atan(α / 2)=1.45mm, w=0.29p=2mm, the square resistance R of the material is 1Ω / □.

[0051] Figure 4 It shows the test results of the wave transmission characteristics of the wave transmission / stealth integrated metamaterial structure provided according to Embodiment 1 of the present invention. From the wave transmission rate curve, it can be seen that the passband of the structure with a wave transmission rate above 60% is 7.5~ 9.5GHz, bandwidth 2GHz, L and S-band wave transmission rate below 10%, within the range of 0-30° incident angle, it has stable wave transmission / stealth effect.

[0052] For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It ...

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Abstract

The invention provides a wave-transmitting/stealth integrated metamaterial structure and a radome and an antenna window with the same. The purpose of the invention is to provide a wave-transmitting/stealth integrated structure with fewer layers, lighter weight, high transmission of electromagnetic waves in a passband and high stealth performance outside the passband. The metamaterial structure comprises a microstructure layer and at least one dielectric layer. The microstructure layer is arranged on the dielectric layer. The microstructure layer is composed of regular polygon rings arranged periodically and patch units arranged in the regular polygon rings, wherein the regular polygon rings are made of resistance materials with specific square resistance, the patch units are metal patch units and the metal patch units are concentric with the regular polygon rings.

Description

technical field [0001] The invention provides a wave-transparent / stealth integrated metamaterial structure and a radome and an antenna window provided therewith, belonging to the technical field of electromagnetic fields and microwaves. Background technique [0002] With the continuous development and progress of modern radar detection technology, the detection distance and detection accuracy of radar continue to increase, which greatly weakens the battlefield survivability and penetration capabilities of weapons and equipment. In order to cope with this change, the strong stealth design of weapons and equipment is becoming more and more more attention. Metamaterial technology has been widely used in the field of stealth due to its unique functional advantages in electromagnetic regulation. The earliest and most widely used is the frequency selective surface metamaterial technology. The frequency selective surface is a space electromagnetic wave filtering structure. The ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q15/00H01Q17/00
CPCH01Q1/42H01Q15/0086H01Q17/00
Inventor 樊君张春波杨帆丛琳王会敏阳开华
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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