Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof

A radio frequency cable, low-loss technology, used in circuits, electrical components, waveguides, etc., can solve the problems of large loss, large phase change, and low frequency of use of the cable, and achieve the purpose of reducing attenuation, offsetting phase change rate, and improving stability. Effect

Inactive Publication Date: 2011-02-23
TIANJIN ASCEND TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The frequency of use of the cable is not high, the loss is large, and more importantl

Method used

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  • Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof
  • Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof
  • Low-loss stationary-phase coaxial radio-frequency cable and manufacturing process thereof

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[0015] Such as figure 1 As shown, a low-loss and stable coaxial radio frequency cable has several layers of microporous PTFE film insulation layer 2 wrapped around a silver-plated copper alloy core 1 and several layers of microporous PTFE film insulation layer 2 The inner shield 3 is wrapped with a silver-plated copper ribbon, and a layer of silver-plated copper outer conductor 4 is braided on the outer shield 3 of the silver-plated copper ribbon. A layer of PTFE is extruded outside the silver-plated copper outer conductor 4 Set of 5. There are nine layers of microporous polytetrafluoroethylene film insulation layer 2.

[0016] A low-loss and stable coaxial RF cable manufacturing process. The manufacturing process steps of the cable are as follows:

[0017] ①. Silver-plated copper alloy core inner conductor 1: adopts a diameter of 2.30±0.03mm, a silver layer thickness of 4.5μm, and a tensile strength of not less than 200N / mm 2 The high-strength silver-plated copper alloy core is ...

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Abstract

The invention relates to a low-loss stationary-phase coaxial radio-frequency cable and a manufacturing process thereof. A plurality of layers of microporous polytetrafluoroethylene film insulating layers are wrapped outside the core of a silver-plated copper alloy wire; a silver-plated copper bandlet inner shield is wrapped outside the plurality of microporous polytetrafluoroethylene film insulating layers; a layer of silver-plated copper wire outer conductor is woven outside the silver-plated copper bandlet inner shield; and a layer of fluorinated ethylene propylene jacket is wrapped outside the silver-plated copper wire outer conductor by pressing. The process comprises the following steps of: 1, plating silver on a copper alloy wire in-core conductor; 2, wrapping the microporous polytetrafluoroethylene film insulating layers; 3, wrapping the silver-plated copper bandlet inner shield; 4, weaving the silver-plated copper wire outer conductor; and 5, wrapping the fluorinated ethylene propylene jacket by pressing. The process has the characteristics of reducing the dielectric constant of an insulating medium, reducing the attenuation of the cable and guaranteeing the high shielding efficiency of the cable.

Description

technical field [0001] The patent of the invention relates to a low-loss stable coaxial radio frequency cable and its manufacturing process, which is especially suitable for weapon equipment systems such as early warning aircraft phased array radar, electronic countermeasures, satellite and missile monitoring, and digital phase-sensitive electronic systems. Background technique [0002] At present, when processing high-temperature-resistant radio frequency cables in my country, the inner conductor uses ordinary silver-plated copper wire; the insulating material uses solid-core polytetrafluoroethylene insulation, which is processed at room temperature; the outer conductor only uses a single braided silver-plated copper wire. The frequency of use of the cable is not high, the loss is large, and more importantly, the phase change is too large in the use environment that requires phase stability. Contents of the invention [0003] In view of the shortcomings of the existing te...

Claims

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Application Information

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IPC IPC(8): H01P3/06H01P11/00
Inventor 徐晓川史卫箭赵明哲李炳全吴健宋琼英
Owner TIANJIN ASCEND TECH
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