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Frequency selecting radome for wideband wide-angle operation

A technology of frequency selection and radome, applied in the direction of antenna, antenna parts, radiation unit cover, etc., which can solve the problems of high cost, difficult FSS design, and complicated processing technology.

Inactive Publication Date: 2018-06-01
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty of FSS design, complex processing technology, high cost, and unstable characteristics at large scanning angles, it has not been widely used in various weapon platforms.

Method used

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  • Frequency selecting radome for wideband wide-angle operation
  • Frequency selecting radome for wideband wide-angle operation
  • Frequency selecting radome for wideband wide-angle operation

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Embodiment Construction

[0017] The present invention will be further described below by examples in conjunction with the accompanying drawings.

[0018] In the frequency selective metallized radome of the present invention, the layering of the cover body is as follows: figure 1 As shown, it includes a weather-resistant coating 1, an outer skin 2, an inner skin 7, an outer FSS screen 3, an inner FSS screen 6, two layers of adhesive films 4 and a middle core layer 5.

[0019] Among them, the weather-resistant coating 1 generally uses fluorocarbon paint, the thickness of which is not more than 50 μm, which has little effect on electrical properties, and is not used as an adjustable variable in the design. After the radome is processed, it is sprayed and polished.

[0020] The outer skin 2 and the inner skin 7 are preferably resin-based glass fiber reinforced composite materials, wherein the resin matrix adopts epoxy system, and the relative dielectric constant is 3.5-4.2. Another benefit of using an ...

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Abstract

The invention relates to a frequency selecting metalized radome which can be widely used for various fields such as radar, communication and electronic countermeasures for realizing specific electromagnetic compatibility, reducing a radar scattering section area of the equipment, reducing interception probability and improving stealth performance. The radome is substantially a spatial domain filter which has advantages of low in-band insertion loss, high out-band suppression degree, wide passband, wide stopband and large incidence angle operation. The radome is composed of two frequency selecting surface layers and a plurality of dielectric layers. The cross section of the cover wall is provided with a fluorine carbon paint layer, an outer sheath, a periodical metal paster layer and a medium substrate thereof, a rubber film, a core layer, a periodical metal paster layer and a substrate thereof, and an inner sheath layer. The radome has advantages of excellent telecommunication performance, excellent structure and environment adaptability, and relatively high engineering practicability.

Description

technical field [0001] The invention belongs to the technical field of antenna microwaves, and relates to a metallized radome working with a wide passband and a wide stopband. Background technique [0002] In order to realize the low observability of the radar, the antenna system of the strong scattering source must be concealed. As Ruan Yingzheng described in her book "Radar Cross Section and Stealth Technology" (National Defense Industry Press): while the antenna system realizes stealth, it must ensure that the electromagnetic waves in its own working frequency band can be transmitted and received normally, so the traditional RCS reduction techniques are often not applicable. Therefore, Frequency Selective Surface (FSS) is widely cited in the stealth technology of radar systems. However, due to the difficulty of FSS design, complex processing technology, high cost, and unstable characteristics at large scanning angles, it has not been widely used in various weapon platfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42H01Q15/00
CPCH01Q1/424H01Q15/0026
Inventor 杨培刚陈文俊
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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