CN106571180A

CN106571180A - High-speed and low-loss mixed medium dual coaxial differential transmission signal wire structure

Info

Publication number: CN106571180A
Application number: CN201610919147.XA
Authority: CN
Inventors: 张军萍; 石磊; 许利强
Original assignee: Hangzhou Lerong Wire & Electric Appliance Co Ltd
Current assignee: Hangzhou Lerong Wire & Electric Appliance Co Ltd
Priority date: 2016-10-21
Filing date: 2016-10-21
Publication date: 2017-04-19

Abstract

The invention discloses a high-speed and low-loss mixed medium dual coaxial differential transmission signal wire structure which comprises a main body, conductors, first insulating layers, a second insulating layer, a shielding layer, a mylar layer and a ground wire. The first insulating layers wrap the conductors to form core wires. Two core wires are arranged side by side and are successively wrapped by the second insulating layer and the shielding layer to form a wrapped wire. The mylar layer wraps the wrapped wire and the ground wire to form the signal wire structure main body. The high-speed and low-loss mixed medium dual coaxial differential transmission signal wire provided by the invention has the advantages of great transmission performance, lower insertion loss, long transmission distance, increased transmission bandwidth, small wire physical size, reduced occupied space and large shielding area. The coupling between the signal wire conductors can be increased. The coupling between the conductors and the shield is reduced. Differential and common mode impedance can be better reconciled.

Description

The double coaxial differential transmission signals line structures of high speed low-loss blending agent

Technical field

The present invention relates to the double coaxial differential transmission signals knots of a kind of holding wire, specially high speed low-loss blending agent Structure, belongs to communication field of material technology.

Background technology

Holding wire is primarily referred to as being used for the circuit for transmitting heat transfer agent and control information in electric control circuit.Holding wire A branch of or multi beam transmission line is configured to a plurality of cable often, it is also possible to the track being aligned in printed circuit board, with The continuous progress of science and technology and application, holding wire develops into other carriers, such as optical cable etc. by metallic carrier.The letter of different purposes Number line often has different industry standards, in order to production and the application of standardizing.

Uniformity signal line product has the disadvantage that in the market：

1. all it is that the transmission of signal is carried out as carrier using a kind of dielectric is given as security on conductor, specification is fixed, centre-to-centre spacing It is just fixed, it is impossible to be adjusted, space hold is than larger.

2. specification must be reduced if size to be reduced, then laser propagation effect is obviously reduced, insertion under equal length is damaged Consumption substantially increases.

3. conductor closes larger with shielding Rhizoma Nelumbinis, and common mode loss increases.

The content of the invention

It is an object of the invention to provide a kind of high-transmission low-loss can realize the low damage of the high speed of more longer transmission distance The double coaxial differential transmission signals line structures of consumption blending agent, to solve the problems, such as to propose in above-mentioned background technology.

The purpose of the present invention is achieved by following technical proposals:The double coaxial difference of high speed low-loss blending agent are passed Defeated signal line structure, including main body, conductor, the first insulating barrier, the second insulating barrier, screen layer, mylar layers and ground wire, it is described First insulating barrier wraps up conductor so as to constitute heart yearn, and heart yearn described in two is simultaneously put and passes through the second insulating barrier and screen layer is twined successively Bag composition is wrapped line, and the mylar layers line that will be wrapped constitutes signal line structure main body with ground wire parcel.

First insulating layer material of the present invention is Skin-Foam-Skin or HDPE.

Second insulating barrier of the present invention is EPTFE layers, and EPTFE layers are formed by EPTFE band windings, winds Duplication For 50%.

Screen layer of the present invention is that aluminium foil wheat is drawn or Copper Foil wheat is drawn.

Conductor of the present invention is naked copper or silver-plated copper of the size in 34～22AWG

Ground wire Cai of the present invention is Yong Round's or flat conductor is made.

The invention has the beneficial effects as follows：Originally it is bright to disclose a kind of double coaxial differential transmission signals of high speed low-loss blending agent Line, by the mixing of the outer different insulative medium of conductor, reaches in-between dielectric constant after a kind of synthesis, makes transmission performance More excellent, insertion loss is lower, and the foaming PE dielectric constants that such as insulate are 1.5, and two EPTFE dielectric constants of insulation are 1.3, after synthesis Dielectric constant be 1.38 or so；Bigger wire gage can be selected after the center distance that product gives, can be transmitted more Over long distances, increase transmission bandwidth, while wire rod physical size can be less, reduction is taken up space；Bigger shielding can be possessed Area, the Rhizoma Nelumbinis that can increase between holding wire conductor are closed, and the Rhizoma Nelumbinis reduced between conductor and shielding are closed；Mediation difference that can be more excellent is together Mould impedance.

Description of the drawings

Fig. 1 is a kind of structural representation of the double coaxial differential transmission signals line structures of high speed low-loss blending agent of the invention Figure；

Fig. 2 be a kind of double coaxial differential transmission signals line structure of high speed low-loss blending agent of the invention structure relative to Existing like product consumes comparison diagram：

In figure：1st, main body, 11, conductor, the 12, first insulating barrier, the 13, second insulating barrier, 14, screen layer, 15, mylar layers, 16th, ground wire.

Specific embodiment

With reference to specific embodiment further instruction, but following detailed description should not be done and be managed Solution is the restriction to body invention.It is various that those of ordinary skill in the art apparently can make on the basis of the present invention Change and change, it should within the scope of invention.

Embodiment 1

As shown in Figure 1-2, the double coaxial differential transmission signals line structures of high speed low-loss blending agent, including main body 1, conductor 11st, the first insulating barrier 12, the second insulating barrier 13, screen layer 14, mylar layers 15 and ground wire 16, first insulating barrier 12 will Conductor 11 is wrapped up so as to constitute heart yearn, and the second insulating barrier 13 is put and passed through to heart yearn described in two simultaneously and screen layer 14 is wrapped composition successively Be wrapped line, and will be wrapped line and the ground wire 16 of the mylar layers 15 wraps up composition signal line structure main body 1；The first described insulating barrier 52 materials are Skin-Foam-Skin or HDPE；Described second insulating barrier 53 is EPTFE layers, and EPTFE layers are twined by EPTFE bands Around forming, winding Duplication is 50%；Described screen layer 54 is that aluminium foil wheat is drawn or Copper Foil wheat is drawn；Described conductor 51 is size In the naked copper or silver-plated copper of 34～22AWG；Described 56 Cai Yong of ground wire Round's or flat conductor 11 make.

A kind of double coaxial differential transmission signals lines of high speed low-loss blending agent disclosed in this is bright, it is outer different exhausted by conductor The mixing of edge medium, reaches in-between dielectric constant after a kind of synthesis, makes transmission performance more excellent, and insertion loss is lower, The foaming PE dielectric constants that such as insulate are 1.5, and two EPTFE dielectric constants of insulation are 1.3, and the dielectric constant after synthesis is 1.38 left It is right；Bigger wire gage can be selected after the center distance that product gives, longer distance can be transmitted, increase transmission belt Width, while wire rod physical size can be less, reduction is taken up space；Bigger shielding surface can be possessed, signal can be increased Rhizoma Nelumbinis between line conductor are closed, and the Rhizoma Nelumbinis reduced between conductor and shielding are closed；Mediation difference that can be more excellent and common code impedance.

Claims

1. the double coaxial differential transmission signals line structure of high speed low-loss blending agent, it is characterised in that：Including main body（1）, conductor （11）, the first insulating barrier（12）, the second insulating barrier（13）, screen layer（14）, mylar layers（15）And ground wire（16）, described One insulating barrier（12）By conductor（11）Parcel so as to constitute heart yearn, simultaneously put and pass through the second insulating barrier by heart yearn described in two（13）And screen Cover layer（14）The composition that is wrapped successively is wrapped line, the mylar layers（15）To be wrapped line and ground wire（16）Parcel constitutes signal knot Structure main body（1）.

2. the double coaxial differential transmission signals line structure of high speed low-loss blending agent according to claim 1, its feature exist In：The first described insulating barrier（12）Material is Skin-Foam-Skin or HDPE.

3. the double coaxial differential transmission signals line structure of high speed low-loss blending agent according to claim 1, its feature exist In：The second described insulating barrier（13）Formed by EPTFE band windings for EPTFE layers, and EPTFE layers, winding Duplication is 50%.

4. the double coaxial differential transmission signals line structure of high speed low-loss blending agent according to claim 1, its feature exist In：Described screen layer（14）Draw for aluminium foil wheat or Copper Foil wheat is drawn.

5. the double coaxial differential transmission signals line structure of high speed low-loss blending agent according to claim 1, its feature exist In：Described conductor（11）For size 34～22AWG naked copper or silver-plated copper.

6. the double coaxial differential transmission signals line structure of high speed low-loss blending agent according to claim 1, its feature exist In：Described ground wire（16）Cai is Yong Round's or flat conductor is made.