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Radial leak coaxial cable

A leaky coaxial cable, radiation type technology, applied in circuits, electrical components, leaky waveguide antennas, etc., can solve problems such as signal distortion, time fading, etc., achieve small coupling loss fluctuations, uniform radiation field strength, and improve coverage. Effect

Inactive Publication Date: 2009-11-25
JIANGSU TRIGIANT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the frequency increases and the moving speed increases, the Doppler effect is obvious, and the Doppler spread will cause time-selective fading, resulting in signal distortion

Method used

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  • Radial leak coaxial cable
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  • Radial leak coaxial cable

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] The invention is an improvement to the leaky coaxial cables with different slot shapes such as traditional U-shaped, V-shaped, eight-shaped slots, one-shaped slots or elliptical slots.

[0021] Such as Figure 4 , a radiation-type leaky coaxial cable, which sequentially includes a central conductor 1 extending longitudinally along the central axis of the cable, a foam insulation layer 2, a radiation outer conductor 3 and a protective sheath 4 from the inside to the outside, and the foam insulation layer 2 connects the center conductor 1 is separated from the radiation outer conductor 3, and the radiation outer conductor 3 is provided with radiation slots, the radiation slots are arc-shaped slots 5 arranged in front and back at intervals, and the arc opening directions of the adjacent arc-shaped slots 5 are opposite .

[0022] The radiating outer conductor 3 is a lo...

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Abstract

A radial leak coaxial cable includes a center conductor (1) extending along center axis of the cable toward the longitudinal direction, a spume insulation layer (2), a radiation external conductor (3) and a protective cover (4) from inside to outside in sequence, the spume insulation layer (2) separates the center conductor (1) with the radiation external conductor (3), the radiation external conductor (3) has radiation slots that are circular arc slots (5) arranged alternately in positive and negative, and adjacent circular arc slots (5) have openings with opposite directions. The invention provided adjacent 'coupling mouth' reverse configuration can reduce vertical polarized longitudinal field of to minimum and can eliminate reversion of vertical polarized transverse field caused by inter-reflection of the vertical polarized longitudinal field, which resolves affects to transmission signal stability and homogeneity caused by mutual interference of primary vertical polarized transverse fields.

Description

technical field [0001] The present invention relates to communication cable technology, in particular to rail transit information construction, such as subway, light rail TETRA private network system, railway train control and safety system, rail transit public network system (GSM, TD-SCDMA, CDMA2000, WCDMA, etc.) technical field The application of internal communication cables; specifically, it is a radiation-type leaky coaxial cable with circular arc-shaped radial groove outer conductors arranged in front and back, which is applied in GSM-R high-speed railway wireless communication. Background technique [0002] In recent years, domestic and foreign railways have widely used the GSM-R system. This system is a digital wireless communication system based on the GSM platform, the most mature and common public wireless communication system in the world, specially developed for railway applications. The system is an economical and efficient integrated wireless communication sys...

Claims

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Application Information

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IPC IPC(8): H01P3/06H01Q13/20
Inventor 姚文讯冯玲芳蒋新洪李文风
Owner JIANGSU TRIGIANT TECH
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