CN200959359Y

CN200959359Y - Stabilized low-loss coaxial radio-frequency cable

Info

Publication number: CN200959359Y
Application number: CN 200620069899
Authority: CN
Inventors: 薛树津; 陈辉; 陈卫峰; 王国强; 江华东
Original assignee: TONGGUANG ELECTRONIC CABLE CO Ltd JIANGSU
Current assignee: Jiangsu Tongguang Electronic Wire & Cable Corp., Ltd.
Priority date: 2006-03-01
Filing date: 2006-03-01
Publication date: 2007-10-10
Anticipated expiration: 2016-03-01

Abstract

Provided is a low-loss stationary-phase coaxial radio frequency cable, which comprises coaxially an inner conductor, an insulation layer, a compound outer conductor and a sheath layer from the inner core to the outside in turn. The inner conductor is silver-coated copper wire or silver-coated copper-clad steel wire, the insulation layer is wrapped or extruded by film of Teflon with low density, the outer conductor is composed by the compound of three layers from the inner to the outside separately, a first outer conductor layer which is silver-coated flat copper belt braided layer, a second outer conductor layer which is a metal wire braided layer wrapped by aluminum-plastic compound belt or with the whole body soldering, and a third outer conductor layer which is silver-coated copper wire braided layer, the outermost layer is the sheath layer, the compound outer conductor and the sheath can also be replace by seamless copper pipe directly. The utility model is used in excellent technical fields such as communication, electronic tracking, electronic countermeasure and electronic navigation, and has advantages such as high stable phase, low loss, low standing wave, broad bandwidth, high shielding and relatively high average power capacity.

Description

A kind of low-loss phase-stable coaxial radio frequency cable

Affiliated technical field

The utility model relates to a kind of coaxial radio frequency cable, and especially insulating material is that low-density polytetrafluoroethylene, outer conductor are three layers of coaxial radio frequency cable that conductor is compound, promptly a kind of low-loss phase-stable coaxial radio frequency cable.

Background technology

In the high-frequency microwave field, strict especially to the phase stability requirement of radio frequency cable transmission.The rate of change at phase angle commonly used is weighed the steady phase performance of cable in transmission line.The phase angle variations of the existing radio frequency cable transmission signals of China is bigger, as the variations in temperature of transmission cable, the breathing that bending change all can cause the internal and external conductor and the insulating material of radio frequency cable, cause structural parameters generation significant change and cause the transmission parameter instability, can not satisfy the high-quality precision and sophisticated technology requirement of low-loss, low standing wave, broadband, high shielding, present all dependence on import, and be subjected to the restriction of countries such as the U.S..

Summary of the invention

For overcome existing radio frequency cable temperature surely mutually degree and bending surely spend mutually poor, the transmission signals loss is big, the unsettled deficiency of parameter, the utility model provides a kind of low-loss high phase-stable coaxial radio frequency cable, makes low, the steady phasic property of its loss good.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of low-loss phase-stable coaxial radio frequency cable is made up of internal and external conductor, insulating barrier and restrictive coating, it is characterized in that outwards being made of inner wire, insulating barrier, compound outer conductor and restrictive coating successively from inner core; Above-mentioned described inner wire is silver-coated copper wire or silver-copper plated steel clad wire; Above-mentioned described insulating barrier is wrapped or pushed by the low-density polytetrafluoroethylene and to form by the low-density polytetrafluoroethylene film; Above-mentioned described compound outer conductor from inside to outside be successively the ground floor outer conductor be silver-plated flat copper band braid, second layer outer conductor be the aluminium-plastic tape lapping layer or for the wire braid of whole wicking and the 3rd layer of outer conductor be that the silver-coated copper wire braid is composited for three layers; Above-mentioned described outer coated sheath layer can be polytetrafluoroethylene, perfluoroethylene-propylene, polyethylene, polyvinyl chloride or other suitable external protective material; Above-mentioned described compound outer conductor and restrictive coating also can directly replace making it simultaneously as outer conductor and restrictive coating with seamless copper pipe.

The beneficial effects of the utility model are that loss is low, low to the phase angle variations rate due to variations in temperature and the bending change, steady phasic property is good, low-loss, low standing wave, broadband, the high high-quality precision and sophisticated technology field instructions for use that shields have been reached, have higher average power capacity simultaneously, can be used for high-grade, precision and advanced technical fields such as communication, electronics tracking, electronic countermeasures and electronic navigation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model cross section enlarged drawing.

In Fig. 1: 1. inner wire, 2. insulating barrier, 3. first outer conductor layer, 4. second outer conductor layer, 5. the 3rd outer conductor layer, 6. external sheath layer.

Embodiment

In Fig. 1, a kind of low-loss phase-stable coaxial radio frequency cable outwards is made up of inner wire (1), insulating barrier (2), first outer conductor layer (3), second outer conductor layer (4), (5) three layers of compound outer conductor layer of the 3rd outer conductor layer and restrictive coating (6) successively from inner core.Above-mentioned described inner wire (1) is silver-coated copper wire or silver-copper plated steel clad wire, above-mentioned described insulating barrier (2) is that wrapped or low-density polytetrafluoroethylene is pushed and formed by the low-density polytetrafluoroethylene film, above-mentioned described compound outer conductor is a silver-plated copper bandlet braid by first outer conductor layer (3) successively from inside to outside, second outer conductor layer (4) is composited for three layers for the silver-coated copper wire braid for the aluminium-plastic tape lapping layer or for whole wicking wire braid and the 3rd outer conductor layer (5), above-mentioned described outer coated sheath layer (6) can be a polytetrafluoroethylene, perfluoroethylene-propylene, polyethylene, polyvinyl chloride or other suitable external protective materials, above-mentioned described compound outer conductor (3,4,5) and restrictive coating (6) also can be directly replace by seamless copper pipe, make it simultaneously as outer conductor layer and restrictive coating.

Claims

1, a kind of low-loss phase-stable coaxial radio frequency cable is made up of internal and external conductor, insulating barrier and restrictive coating, it is characterized in that outwards being made of inner wire, insulating barrier, compound outer conductor and restrictive coating successively from inner core.

2, low-loss phase-stable coaxial radio frequency cable according to claim 1 is characterized in that described inner wire is silver-coated copper wire or silver-copper plated steel clad wire.

3, low-loss phase-stable coaxial radio frequency cable according to claim 1 is characterized in that described insulating barrier is wrapped or pushed by the low-density polytetrafluoroethylene and to form by the low-density polytetrafluoroethylene film.

4, low-loss phase-stable coaxial radio frequency cable according to claim 1 is characterized in that described compound outer conductor is that silver-plated flat copper band braid, second outer conductor layer are that aluminium-plastic tape lapping layer or whole wicking wire braid and the 3rd outer conductor layer are that the silver-coated copper wire braid is composited for three layers by first outer conductor layer successively from inside to outside.

5, low-loss phase-stable coaxial radio frequency cable according to claim 1 is characterized in that described outer coated sheath layer can be polytetrafluoroethylene, perfluoroethylene-propylene, polyethylene, polyvinyl chloride or other suitable external protective materials.

6, low-loss phase-stable coaxial radio frequency cable according to claim 1 is characterized in that described compound outer conductor and restrictive coating also can directly be replaced by seamless copper pipe, make it simultaneously as outer conductor and restrictive coating.