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Dissipation type broadband frequency selection surface radar cover

A frequency selective surface and radome technology, applied in the fields of electromagnetic fields and microwaves, can solve the problems of transition bandwidth, difficult to achieve a steep cut-off of the passband window, difficult to guarantee the stealth performance of the radome, etc., to achieve a wide range of applications and improve the effect of stealth performance.

Active Publication Date: 2018-10-02
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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AI Technical Summary

Problems solved by technology

Usually in the electrical performance design of wave-transparent / stealth radome, the frequency selective surface (FSS) technology is used, but the general frequency selective surface is difficult to achieve a steep cut-off of the passband window, the transition band is wide, and the stealth performance of the radome is difficult. ensure

Method used

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  • Dissipation type broadband frequency selection surface radar cover
  • Dissipation type broadband frequency selection surface radar cover
  • Dissipation type broadband frequency selection surface radar cover

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Embodiment 1

[0047] combine Figure 1 to Figure 4 This embodiment is described. The embodiment of the present invention is a FSS structure radome with a steep cut-off effect. The specific design process is divided into two stages: determination of the overall scheme of the radome structure and optimization of the FSS unit structure:

[0048] 1. Determination of the overall scheme of the radome structure

[0049] Taking a certain type of radome as the background of the wave-transparent / stealth technical indicators, the technical indicators are: working frequency band: X-band, working bandwidth: 500MHz; wave transmission rate: ≥90% (within the working bandwidth), stealth frequency band: other frequency bands outside the X-band , Reflectivity: ≥-15dB; transition band width: ≤1GHz.

[0050] After design analysis, the optimal thickness of the radome body is 5.6mm, and the radome material is preferably: the inner and outer skin materials of the radome are quartz fiber / cyanate composite material...

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Abstract

The invention provides a dissipation type broadband frequency selection surface radar cover. The cover comprises a first skin layer, a first frequency selection layer, a first core layer, a second frequency selection layer, a second core layer, a third frequency selection layer and a second skin layer, wherein the first skin layer, the first frequency selection layer, the first core layer, the second frequency selection layer, the second core layer, the third frequency selection layer and the second skin layer are successively arranged in the thickness direction. The first frequency selectionlayer is consistent with the third frequency selection layer.

Description

technical field [0001] The invention provides a dissipative broadband frequency selective surface radome, which belongs to the technical field of electromagnetic field and microwave. Background technique [0002] Improving the survivability and overall combat effectiveness of weapons is the focus of general attention in the military industry of various countries. Stealth technology is an effective penetration method developed according to the characteristics of radar work. As a strong scattering source on weapons and equipment, the radar antenna needs to meet the requirements of high penetration in the passband and high stealth in the stopband, and the transition zone between the passband and the stopband should be as small as possible. . Designing a radome that satisfies engineering applications according to actual working conditions is a major technical problem in the stealth design of various weapon platforms. [0003] Traditional dielectric radomes can achieve high wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q15/00
CPCH01Q1/42H01Q15/0013H01Q15/0026
Inventor 阳开华张春波杨帆樊君丛琳
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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