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Low-loss broadcasting coaxial cable and manufacturing method thereof

A technology of coaxial cable and manufacturing method, which is applied in the field of broadcast signal transmission coaxial cable, can solve problems such as unsuitability of coaxial cable, and achieve the effect of good promotion value, high shielding performance and simple structure

Inactive Publication Date: 2010-11-17
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And above-mentioned coaxial cable is not suitable for the transmission of high-quality signal in the HFC cable TV broadband communication network, and the design that this application carries out based on above-mentioned purpose just

Method used

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  • Low-loss broadcasting coaxial cable and manufacturing method thereof
  • Low-loss broadcasting coaxial cable and manufacturing method thereof
  • Low-loss broadcasting coaxial cable and manufacturing method thereof

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, illustrate in detail the specific content of the present invention:

[0025] Such as figure 1 and figure 2 The coaxial cable shown is mainly used to transmit broadcast video data and voice information, and it includes an inner conductor 1, an insulating layer 2, an outer conductor 3, and a sheath 4 in order from the inside to the outside, wherein the inner conductor 1 adopts the transmission performance For copper or copper-clad aluminum wire, the insulating layer 2 is composed of three layers of skin-foam-skin, that is, it is composed of an insulating inner skin layer 21, an insulating foam layer 22, and an insulating outer skin layer 23 from the inside to the outside. The insulating inner skin layer 21 is bonded to the inner conductor 1, which is mainly used to prevent the inner conductor 1 from longitudinally expanding and contracting with the change of the ambient temperature, and the insulating foam layer 22 is extr...

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Abstract

The invention relates to a low-loss broadcasting coaxial cable which comprises an inner conductor, an insulation layer, an outer conductor and a jacket, wherein the insulation layer adopts a skin-foam-skin three-layer structure formed by carbon dioxide foaming, and the outer conductor is formed by metal band welding fabrication. The broadcasting coaxial cable has the characteristics of low loss, high shielding performance, favorable bending properties and water and corrosion resistance, simple structure and convenient installation, and can be used in a broadband communication network in China to transmit video entertainment information and carry out interaction on video data and voice information, thereby having favorable generalization value.

Description

technical field [0001] The invention relates to a broadcast signal transmission coaxial cable in the technical field of wireless communication. Background technique [0002] A broadcast coaxial cable is a cable used to transmit broadcast video data and voice information, which is a type of transmission line. The so-called transmission line is composed of a signal path and a return path. There are distributed capacitance and distributed inductance between the two paths. The characteristic impedance of the transmission line is related to these two values. The common broadcast coaxial cable has 75 ohm coaxial cable, and 75 ohm refers to the characteristic impedance of the coaxial cable. The existing broadcast coaxial cable is mainly composed of an inner conductor, an insulating layer, an outer conductor and a sheath, wherein the insulating layer is insulated by foaming nitrogen, and the outer conductor is mainly composed of a layer of braided wire and a longitudinal cladding m...

Claims

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Application Information

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IPC IPC(8): H01B11/18H01B7/02H01B7/04H01B7/17H01B13/00
Inventor 沈小平喻志安
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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