CN201868555U

CN201868555U - Extruded insulating low-loss mechanical stable phase coaxial radiofrequency cable

Info

Publication number: CN201868555U
Application number: CN2010206346176U
Authority: CN
Inventors: 徐晓川; 史卫箭; 赵明哲; 李炳全; 谷越涛; 吴健
Original assignee: TIANJIN ASCEND TECHNOLOGIES Co Ltd
Current assignee: TIANJIN ASCEND TECHNOLOGIES Co Ltd
Priority date: 2010-12-01
Filing date: 2010-12-01
Publication date: 2011-06-15
Anticipated expiration: 2020-12-01

Abstract

The utility model relates to an extruded insulating low-loss mechanical stable phase coaxial radiofrequency cable. A polytetrafluoroethylene insulating layer is extruded and coated outside a silver-copper alloy plated core, a silver plated copper flat tape inner shield is lapped outside the polytetrafluoroethylene insulating layer, a silver plated copper wire outer conductor layer is braided outside the silver plated copper flat tape inner shield, and a fluorinated ethylene propylene sheath is extruded and coated outside the silver plated copper wire outer conductor. The coaxial radiofrequency cable has the advantages that due to the additional silver plated copper flat tape inner shield layer, structure stability of the cable is strengthened, low phase variation of the cable along with mechanical variation is guaranteed, dielectric constant of an insulating medium is reduced by means of semi-sintering during insulation processing, and attenuation of the cable is reduced. In a word, mechanical phase of the cable is stable by the aid of material selection for the inner conductor and the insulating layer and the special structure of lapping the silver plated copper tape inner shield; and attenuation of the cable is reduced by means of controlling sintering of the insulating layer.

Description

Extrude insulated type low-loss machinery phase-stable coaxial radio frequency cable

Technical field

The utility model relates to a kind of insulated type low-loss machinery phase-stable coaxial radio frequency cable of extruding, and is specially adapted to weaponry systems such as the monitoring of early warning plane phased array radar, electronic countermeasures, satellite and guided missile and digital phase sensitive electronic system.

Background technology

China adds man-hour at high temperature resistant radio frequency cable at present, and inner wire adopts common silver-coated copper wire; Insulating material adopts real core teflon insulation, and normal temperature is pushed form processing; Outer conductor just adopts single braiding silver-coated copper wire.Cause the cable frequency of utilization not high, loss is big, the more important thing is that phase change is too big in requiring the stable environment for use of mechanical phase.

Summary of the invention

Deficiency in view of the prior art existence, the utility model provides a kind of insulated type low-loss machinery phase-stable coaxial radio frequency cable of extruding, and has reduced the dielectric constant of insulating material, has reduced the signal transmission attenuation, improve the through-put power of cable, reduced the amplitude of variation of mechanical phase simultaneously.

The utility model for achieving the above object, the technical scheme that is adopted is: a kind of insulated type low-loss machinery phase-stable coaxial radio frequency cable of extruding, it is characterized in that: outside silver-plated copper alloy core, extrude the teflon insulation layer, wrapped silver-plated copper bandlet inner shield outside the teflon insulation layer, outside the inner shield of silver-plated copper bandlet, weave one deck silver-coated copper wire outer conductor, outside the silver-coated copper wire outer conductor, extrude one deck perfluoroethylene-propylene sheath.

Characteristics of the present utility model are: inner wire adopts silver-plated copper alloy core, insulating barrier adopts and extrudes the teflon insulation layer, increases silver-plated copper strips internal shield simultaneously, has so just increased the structural stability of product, when having guaranteed to change with machinery, phase of cable changes very little; In processing insulation process, adopt half sintering processing, reduced the dielectric constant of dielectric, reduced the decay of cable.Realize that by the material selection of inner wire, insulating barrier and the special construction of wrapped silver-plated copper strips inner shield the mechanical phase of cable is stable in a word; Sintering control by insulating barrier reduces the decay of cable.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

As shown in Figure 1, extrude insulated type low-loss machinery phase-stable coaxial radio frequency cable, outside silver-plated copper alloy core 1, extrude teflon insulation layer 2, wrapped silver-plated copper bandlet inner shield 3 outside teflon insulation layer 2, braiding one deck silver-coated copper wire outer conductor 4 extrudes one deck perfluoroethylene-propylene sheath 5 outside silver-coated copper wire outer conductor 4 outside silver-plated copper bandlet inner shield 3.

Claims

1. extrude insulated type low-loss machinery phase-stable coaxial radio frequency cable for one kind, it is characterized in that: outside silver-plated copper alloy core (1), extrude teflon insulation layer (2), wrapped silver-plated copper bandlet inner shield (3) outside teflon insulation layer (2), braiding one deck silver-coated copper wire outer conductor (4) extrudes one deck perfluoroethylene-propylene sheath (5) outside silver-coated copper wire outer conductor (4) outside silver-plated copper bandlet inner shield (3).