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Radome

A radome and body technology, applied in the field of radome, can solve the problems of increasing the difficulty of optimizing the design of the electrical performance of the radome, increasing the difficulty of the radome process, and distorting the antenna pattern, so as to improve the pattern and reduce the offset of the antenna beam , The effect of reducing antenna gain loss

Pending Publication Date: 2017-09-15
CHINA TOWER CO LTD
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Problems solved by technology

[0004] The disadvantages of this method are: (1) The surface of the radome forms a discontinuous structure, and the transition region easily leads to distortion of the antenna pattern; (2) The method of changing the electrical thickness not only increases the difficulty of optimizing the electrical performance of the radome, Moreover, the process difficulty of preparing the radome is increased

Method used

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0014] A radome, such as image 3 As shown, the radome is based on the technology of ordinary radome with copper layer 1 and sponge layer 2 added, sponge layer 2 is made on the ordinary radome, and copper layer 1 is made on the dielectric layer 2. Such as figure 1 As shown, the copper layer 1 is composed of pentagonal or hexagonal units, wherein the width of the pentagonal or hexagonal is 8 microns, and when the unit period of the copper layer 1 is less than half a wavelength, the copper layer 1 has a higher and Stable Q value. However, the transport properties of copper layer 1 are determined by an infinite number of Froget modes, including main modes and higher-order modes. Among them, the high-order mode belongs to the attenuation mode, which will affect the transmission of the main mode. Therefore, without affecting the transmission of...

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Abstract

The invention provides a radome, and belongs to the technical field of radar radome electrical properties. The first-order influence on an antenna system can be reduced by the radome so that the guidance precision of the aircraft can be enhanced. The radome comprises a radome body and an internal structure. A 3mm sponge layer is arranged on the radome body. A copper layer of 20-40 microns is arranged on a dielectric layer. The copper layer surface has a hexagonal or pentagonal structure. The overall shape of the radome has a two-dimensional curve structure. The internal structure is constructed by wood trusses and provided with reinforcing ribs of which the mechanism is shaped like a Chinese character "jing". When a metal conductive screen is loaded on the radome, the directional diagram of the radar antenna can be improved, i.e. the antenna gain loss can be reduced and the antenna beam deviation can be reduced so that guidance precision of the aircraft can be enhanced. The reinforcing ribs are used so that the overall structure is enabled to be more stable without increasing resistance, and the radome has the thin, light, wide and strong technical characteristics.

Description

technical field [0001] The invention belongs to the technical field of electrical properties of a radome, and in particular relates to a radome. Background technique [0002] A radome is a covering made of natural or man-made dielectric material, or a specially shaped electromagnetic window formed by a dielectric shell supported by a truss. The cross-sectional structure of the radome wall can be divided into uniform single layer, variable thickness single layer, A-interlayer, B-interlayer, C-interlayer and multi-layer structure. The radome on the aircraft with higher requirements generally adopts a half-wavelength wall structure. The effect of a radome on any antenna system can be divided into first order effect and second order effect. Among them, the first-order influence mainly depends on the transmittance and the insertion phase displacement (Insertion phase delay, IPD) of the radome that vary with the incident angle. They mainly affect the change of the pattern in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42B32B15/20B32B15/095B32B15/14
CPCH01Q1/422B32B15/095B32B15/14B32B15/20B32B2307/202B32B2262/0292
Inventor 管宇刘开宇季宏林开
Owner CHINA TOWER CO LTD
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