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Low-loss phase-stable coaxial cable and manufacture method thereof

A manufacturing method and low-loss technology, which is applied in the manufacture of coaxial cables, coaxial cables/analog cables, circuits, etc., can solve the problems of high transmission loss and achieve the effects of reducing signal attenuation, not easy to misalign, and reducing loss

Active Publication Date: 2009-06-03
KINGSIGNAL TECHNOLOGY CO LTD
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a low-loss coaxial cable for the defect of high transmission loss of existing coaxial cables

Method used

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  • Low-loss phase-stable coaxial cable and manufacture method thereof

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Embodiment Construction

[0026] Composition and working principle of low loss stable coaxial cable:

[0027] The low-loss stable coaxial cable of the present invention is composed of special alloy inner conductor, low-density and low-loss PTFE insulating layer, special alloy tape shielding, metal composite film coating, silver wire braiding and Teflon sheath. in:

[0028] a. Inner conductor: When the radio frequency coaxial cable transmits signals, the signal is transmitted through the surface layer of the inner conductor. The higher the frequency, the more obvious the transmission on the surface. Therefore, the structure of the inner conductor is improved and a layer is plated on its surface low resistance layer. In an embodiment of the present invention, the inner conductor uses a silver-copper alloy material as a base material, and the surface is plated with silver.

[0029] b. Insulation: When the electrical signal is transmitted, it passes through the surface of the inner conductor of the cable...

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Abstract

The invention relates to a low-loss phase-stable coaxial cable and a manufacture method thereof. The low-loss phase-stable coaxial cable comprises, sequentially arranged from inside to outside, an inner conductor, an intermediate insulation layer, an outer conductor and an outer sheath, wherein the inner conductor includes a base material containing Ag-Cu alloy and an Ag coating layer. In the preferred scheme, the Ag-Cu alloy contains Cu 99% and Ag 1%. The outer conductor includes, sequentially arranged from inside to outside, an alloy strip layer, a metal composite film layer, and an Ag wire braid layer, which are respectively wrapped by an alloy strip, a metal composite film strip and a flat Ag wire braid strip. The intermediate insulation layer is made of a foamed polytetrafluoroethylene material with the dielectric constant of 1.65 to 1.73. The low-loss phase-stable coaxial cable can lower the transmission loss of coaxial cables so as to reduce the signal attenuation in the transmission process, and can improve the mechanical phase stability of the coaxial cables.

Description

technical field [0001] The present invention relates to a communication cable, more specifically, to a low-loss stable coaxial cable and a manufacturing method thereof. Background technique [0002] High-performance microwave signal cables are important basic components of modern information equipment. For example, modern combat aircraft have complex airborne electronic systems. It is particularly important for airborne electronic equipment to achieve accurate and reliable transmission of information in various complex electromagnetic interference environments, such as high anti-interference of radar, long-range detection, precise guidance and other information. transmission. Low loss and high temperature resistant radio frequency coaxial cable is an important basic device for airborne equipment to transmit microwave signals. It requires lower loss, smaller reflection (VSWR) and greater withstand power, so as to ensure the signal of airborne electronic equipment High relia...

Claims

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Application Information

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IPC IPC(8): H01B11/18H01B13/016H01P3/06
Inventor 黄昌华李军郑军肖东华
Owner KINGSIGNAL TECHNOLOGY CO LTD
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