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A c-sandwich broadband radome structure exhibiting bandpass performance in the c- and x-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 enhance physical strength and save multi-layer pasting process , the effect of convenient processing

Active Publication Date: 2021-12-31
南京鲲瑜信息科技有限公司
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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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  • A c-sandwich broadband radome structure exhibiting bandpass performance in the c- and x-bands
  • A c-sandwich broadband radome structure exhibiting bandpass performance in the c- and x-bands
  • A c-sandwich broadband radome structure exhibiting bandpass performance in the c- and x-bands

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Embodiment Construction

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

[0024] Such as 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 m...

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Abstract

The invention discloses a C sandwich broadband radome structure with band-pass performance in C and X bands, including three parts: a frequency selective surface (Frequency Selective Surface, FSS) core layer, a skin and an air interlayer; the FSS core layer includes a dielectric The substrate, and the periodic FSS array etched on the upper and lower layers of the substrate; several dielectric screws and washers are used between the skin and the FSS core layer to achieve interlayer fixation and isolation, thereby forming an air interlayer of a certain thickness. Aiming at the problem of bandwidth stability of broadband radome in the case of oblique incidence, the present invention provides a radome structure with broadband, high transmittance, steep out-of-band suppression, and insensitive to the influence of incident angle and polarization change The design effectively improves the anti-interference ability and stealth performance of the antenna system under the premise of ensuring the normal radiation of the antenna.

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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Patent Type & Authority Patents(China)
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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