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C-interlayer broadband radome structure with band-pass performance in C and X wave bands

A broadband antenna, X-band technology, applied in the field of frequency selective surface radome, can solve the problems of limited transmission bandwidth, little mention of out-of-band suppression effect, instability, etc., to achieve enhanced physical strength, low cost, and convenient processing Effect

Active Publication Date: 2020-05-15
南京鲲瑜信息科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing frequency selective surface research, the transmission broadband is usually limited or unstable in the case of oblique incidence, and its out-of-band suppression effect is rarely mentioned

Method used

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  • C-interlayer broadband radome structure with band-pass performance in C and X wave bands
  • C-interlayer broadband radome structure with band-pass performance in C and X wave bands
  • C-interlayer broadband radome structure with band-pass performance in C and X wave bands

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Embodiment Construction

[0023] The present invention is described in further detail now in conjunction with accompanying drawing.

[0024] like figure 1 A C sandwich broadband radome structure showing bandpass performance in the C and X bands is shown. The radome is composed of three parts, including: one layer of FSS core layer 4, two layers of skin 1, and two layers of air interlayer 2. FSS core layer 4 thickness h 3 is 1mm, skin thickness h 1 2mm, air interlayer 2 thickness h 2 3mm.

[0025] combine figure 1 , the FSS core layer 4 is a PCB board with different FSS patterns etched on the upper and lower surfaces. The FSS structure in the FSS core layer 4 can produce a wide passband frequency response and a good out-of-band suppression effect. The structure of the upper layer FSS 3 includes a square metal grid structure 3-1, and a relatively small-sized metal square ring structure 3-2 is filled inside the grid unit; the structure of the lower layer FSS5 is a periodic arrangement of square meta...

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Abstract

The invention discloses a C interlayer broadband radome structure with the band-pass performance in C and X wave bands. The C interlayer broadband radome structure comprises a frequency selective surface (FSS) core layer, a skin and an air interlayer, the FSS core layer comprises a dielectric substrate and the periodic FSS arrays etched on the upper layer and the lower layer of the substrate, andthe interlayer fixation and isolation between the skin and the FSS core layer are realized through a plurality of medium screws and gaskets, so that an air interlayer with a certain thickness is formed. According to the invention, under an oblique incidence condition, the broadband radome bandwidth stability problem is solved, the radome structure design realizing the broadband, high wave transmission rate and steep drop out-of-band rejection functions and insensitive to the influence of the incident angles and polarization changes is provided, and on the premise of guaranteeing the normal radiation of an antenna, the anti-interference capacity and the stealth performance of an antenna system are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of frequency selective surface radome, and in particular relates to a C sandwich broadband radome structure with band-pass performance in C and X bands. Background technique [0002] In order to prevent the antenna system from various influences caused by external environmental factors, radome is widely used in various electromagnetic fields. Nowadays, in various electronic systems such as communication, radar, and aircraft, antennas are often required to have a certain operating frequency bandwidth, and it is hoped that unwanted electromagnetic signals can be suppressed outside the operating frequency of the antenna to enhance the performance of the antenna system. Anti-jamming capability and stealth performance. Therefore, in these systems, the radome used should not only achieve the wave transmission efficiency in a certain bandwidth, but try not to affect the original radiation performance of the antenn...

Claims

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Application Information

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IPC IPC(8): H01Q1/42
CPCH01Q1/422
Inventor 何林
Owner 南京鲲瑜信息科技有限公司
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