CN203056067U

CN203056067U - A flexible low-loss radio-frequency coaxial cable

Info

Publication number: CN203056067U
Application number: CN 201220740110
Authority: CN
Inventors: 王吉斌; 单海龙; 陈全喜
Original assignee: LIAONING JINHUAN CABLE CO Ltd
Current assignee: LIAONING JINHUAN CABLE CO Ltd
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2013-07-10
Anticipated expiration: 2022-12-28

Abstract

The utility model relates to a flexible low-loss radio-frequency coaxial cable comprising an inner conductor, a composite lapped insulating layer, copper flat wire weaving layers, and an outer sheath which are coaxially arranged from inside to outside. The copper flat wire weaving layers comprise a first copper flat wire weaving layer and a second copper flat wire weaving layer. The two copper flat wire weaving layers contact each other and no gap is arranged between the two copper flat wire weaving layers. The flexible low-loss radio-frequency coaxial cable has characteristics of two arranged silver-plated copper flat wire weaving layers, no filling medium between layers, good flexibility, well shielding external electromagnetic interference, reducing loss, and increasing communication quality.

Description

Soft low-loss radio frequency coaxial-cable

Technical field

The utility model relates to the cable technology field, specifically a kind of soft low-loss radio frequency coaxial-cable.

Background technology

Radio frequency coaxial-cable (Coaxial Cable) refers to two concentric conductors and the cable in the shared same axle center of conductor and screen.It is to use a kind of wire rod widely in the computer network.Radio frequency coaxial-cable is widely used in the communications field, is the transmission line of wireless device in the systems such as tracking, warning, radar navigation, is specially adapted to the transmission of moving-member, can support high-bandwidth communication at the circuit of long relatively non-relay device.

Existing similar products flexibility is not good, and loss is bigger, and is poor to the electromagnetic interference shield in adjacent cable or the external world.

The utility model content

Weak point such as not good at radio frequency coaxial-cable flexibility of the prior art, that loss is bigger, the technical problems to be solved in the utility model provides the soft low-loss radio frequency coaxial-cable that a kind of flexibility is good, loss is low.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

The soft low-loss radio frequency coaxial-cable of the utility model, set gradually inner wire, compound lapped insulation layer, copper strap wire braid and oversheath from inside to outside, copper strap wire braid and the coaxial setting of inner wire, wherein the copper strap wire braid comprises the first copper strap wire braid and the second copper strap wire braid, and the two interlayer arranges for no gap contact.

Described compound lapped insulation layer comprises expanded microporous polytetra fluoroethylene-EPTEE film, semi-directional film and raw material band film.

Described inner wire is silver-plated copper coin/twisted wire.

Described oversheath adopts the polyurethane manufacturing.

The utlity model has following beneficial effect and advantage:

1. the utility model is provided with two-layer silver-plated copper lenticular wire braid, and interlayer does not have filled media, and flexibility is good, can well intercept extraneous electromagnetic interference, has reduced loss, has improved communication quality.

2. the utility model is by signal frequency height, bandwidth, and good uniformity.

Description of drawings

Fig. 1 is the utility model structural representation.

Wherein, 1 is inner wire; 2 is compound lapped insulation layer; 3 is the first copper strap wire braid; 4 is the second copper strap wire braid; 5 is oversheath.

Embodiment

The present invention is further elaborated below in conjunction with Figure of description.

As shown in Figure 1, the soft low-loss radio frequency coaxial-cable of the utility model sets gradually inner wire 1, compound lapped insulation layer 2, copper strap wire braid and oversheath 5, copper strap wire braid and inner wire 1 coaxial setting from inside to outside.

In the present embodiment, inner wire 1, compound lapped insulation layer 2, copper strap wire braid and oversheath 5 coaxial setting from inside to outside, wherein the copper strap wire braid comprises the first copper strap wire braid 3 and the second copper strap wire braid 4, and the two interlayer arranges for no gap contact.

Inner wire 1 adopts silver-plated copper coin/twisted wire, and its skin is compound lapped insulation layer 2, is followed successively by the composite construction that is formed by expanded microporous polytetra fluoroethylene-EPTEE film, semi-directional film and raw material band film from inside to outside, smooth, free from admixture, free of pinholes, the tensile strength height, good insulation preformance.

The first copper strap wire braid 3 of copper strap wire braid and the second copper strap wire braid 4 are the network structure that silver-plated copper lenticular wire braiding forms, and can avoid copper oxidation and corrosion, and the braid softness, frangibility not, and antijamming capability is strong.

Oversheath 5 adopts the polyurethane oversheath.

The manufacture method of the soft low-loss radio frequency coaxial-cable of the utility model is:

Compound lapped insulation layer 2 employing that (1) will prepare are in advance extruded form and are evenly surrounded on the surface of inner wire 1, form insulated wire cores;

(2) outside compound lapped insulation layer 2, coat the first copper strap wire braid 3 and the second copper strap wire braid 4 successively, form the double layer screen layer;

(3) outside the second copper strap wire braid, coat polyurethane oversheath 5.

Claims

1. soft low-loss radio frequency coaxial-cable, it is characterized in that: set gradually inner wire (1), compound lapped insulation layer (2), copper strap wire braid and oversheath (5) from inside to outside, copper strap wire braid and the coaxial setting of inner wire (1), wherein the copper strap wire braid comprises the first copper strap wire braid (3) and the second copper strap wire braid (4), and the two interlayer arranges for no gap contact.

2. by the described soft low-loss radio frequency coaxial-cable of claim 1, it is characterized in that: described compound lapped insulation layer (2) comprises expanded microporous polytetra fluoroethylene-EPTEE film, semi-directional film and raw material band film.

3. by the described soft low-loss radio frequency coaxial-cable of claim 1, it is characterized in that: described inner wire (1) is silver-plated copper coin/twisted wire.

4. by the described soft low-loss radio frequency coaxial-cable of claim 1, it is characterized in that: described oversheath (5) adopts the polyurethane manufacturing.