CN201248193Y

CN201248193Y - Printed circuit board and electronic equipment

Info

Publication number: CN201248193Y
Application number: CNU2008201099885U
Authority: CN
Inventors: 白亮; 尹邦实
Original assignee: Shenzhen Huawei Communication Technologies Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2008-08-28
Filing date: 2008-08-28
Publication date: 2009-05-27
Anticipated expiration: 2018-08-28

Abstract

The utility model discloses a printed circuit board (PCB) and electronic equipment. The PCB comprises a signal line and a conductor, wherein the signal line passes through a non-reference-plane area or a discontinuous reference plane area, and the conductor spans on the ground at two sides of the signal line. The electronic equipment comprises the PCB. The utility model enables the ground of the non-reference-plane area or the discontinuous reference plane area to communicate through spanning the conductor on the ground at two sides of the signal line to avoid the circumambulation of return-current signals, thereby achieving the purpose of improving the return current characteristic with lower cost and shorter period, and achieving the effect of restraining the electromagnetic interference.

Description

A kind of printed circuit board (PCB) and electronic equipment

Technical field

The utility model relates to electronic circuit field, particularly a kind of printed circuit board (PCB) and electronic equipment.

Background technology

Along with the development of terminal electronic product with popularize, price is more and more lower.The end product developer wants to gain under the low price environment, just must reduce cost on assurance product quality basis.Therefore, a lot of terminal electronic products adopt all cheaply that single or double PCB (Printed Circuit Board, printed circuit board) plate designs.

But pcb board is because reasons such as cabling usually exist ground dispersion, the incomplete phenomenon of ground level, and this can cause detouring of backflow signal, increases loop inductance or electric capacity, may cause adverse consequencess such as resonance.

At present, the normal way that pcb board is increased ground plane layer that adopts of prior art solves the problem that ground reference and ground reflux.Ground plane layer can provide reference planes for element layer, for the backflow signal provides a return path, has reduced crosstalking between the pcb board cabling.

In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art:

Employing solves the problem that ground refluxes to the method that printed circuit board (PCB) increases ground plane layer, has increased cost of manufacture, makes fabrication cycle elongated.

The utility model content

In order to save cost, shorten fabrication cycle, the utility model embodiment provides a kind of printed circuit board (PCB) and electronic equipment.Described technical scheme is as follows:

A kind of printed circuit board (PCB) is characterized in that, described printed circuit board (PCB) (10) comprising: signal lead (101) and conductor (102); Wherein,

Described signal lead (101) is through no plane of reference zone or plane of reference discontinuity zone;

Described conductor (102) cross-over connection is in the ground of described signal lead (101) both sides.

A kind of electronic equipment is characterized in that, described electronic equipment comprises: printed circuit board (PCB) (10), and described printed circuit board (PCB) (10) comprising: signal lead (101) and conductor (102); Wherein,

The beneficial effect of the technical scheme that the utility model embodiment provides is:

By with the ground of conductor cross-over connection in the signal lead both sides, the ground of no plane of reference zone or plane of reference discontinuity zone is communicated with, avoided detouring of backflow signal, reached with lower cost, the shorter cycle is improved the purpose of reflux characteristic,

Description of drawings

Fig. 1 is the printed circuit board arrangement schematic diagram that the utility model embodiment provides.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, the utility model execution mode is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1, present embodiment provides a kind of printed circuit board (PCB), and this printed circuit board (PCB) 10 comprises: signal lead 101, conductor 102; Wherein,

Signal lead 101 is through no plane of reference zone or plane of reference discontinuity zone;

Conductor 102 cross-over connections are in the ground of signal lead 101 both sides.

In another embodiment of the utility model, printed circuit board (PCB) 10 can be a single-clad board, and this single-clad board does not have ground plane layer as reference face, lead can only concentrate appear at printed circuit board (PCB) one side; Printed circuit board (PCB) 10 can be a double-sided printed-circuit board, and lead can appear at the two sides of printed circuit board (PCB), and wherein one side is that ground plane layer is as reference face, but because may there be plane of reference discontinuity zone in reason such as cabling; When signal lead 101 process no plane of reference zones or plane of reference discontinuity zone, signal can detour, and reflux characteristic is bad.

Signal lead 101 can be big electric current cabling or high speed signal cabling, can produce stronger electromagnetic interference to other cabling and electronic component on the printed circuit board (PCB).

Conductor 102 can be resistance device or Metal Structural Parts, and resistance device or Metal Structural Parts cross-over connection in the ground of signal lead both sides, not only can be improved reflux characteristic, avoids big electric current or high speed signal to detour, and can also play the effect that suppresses electromagnetic interference.In order to guarantee the characteristic of good reflux characteristic and inhibition electromagnetic interference, can select good resistance device of equivalent parameters or Metal Structural Parts for use.So-called equivalent parameters is good, be meant when frequency is high, the equivalent inductance of resistance device and equivalent capacity are all smaller, and the still resistance characteristic that shows uses the reasonable conductor of equivalent parameters can reach the effect that better improvement refluxes and suppresses electromagnetic interference.

In addition, can be with a plurality of conductor cross-over connections in the ground of signal lead both sides, referring to Fig. 1, with three conductor cross-over connections in the ground of interference signal cabling both sides.Though conductor of a cross-over connection also can be communicated with making, the effect of effect that is communicated with and inhibition electromagnetic interference is bad.

The utility model passes through the ground of conductor cross-over connection in the signal lead both sides, the ground of no plane of reference zone or plane of reference discontinuity zone is communicated with, avoided detouring of backflow signal, reached with lower cost, the shorter cycle is improved the purpose of reflux characteristic, also played the effect that suppresses electromagnetic interference simultaneously, specific as follows:

1. improve signal quality, realize that better ground refluxes

It is the successful key of pcb board design that good ground reference and ground backflow is provided, the pcb board that present embodiment provides, and the ground that cabling is interrupted is communicated with, and for signal provides better return flow path, has improved signal quality.

2. realize that cost is low, fabrication cycle is short

Compare with the method that increases ground plane layer, conductor (as: resistance device and Metal Structural Parts etc.) cross-over connection can improve reflux characteristic equally, but fabrication cycle is shorter in the ground of signal lead both sides, cost is lower, and the price competitiveness of product is stronger.

3. the shielded signal cabling suppresses electromagnetic interference

Conductor is connected across the ground of signal lead both sides, has also played shielding interference signal cabling, suppress the purpose of electromagnetic interference.The method that solves electromagnetic interference with the available technology adopting radome is compared, and cross-over connection conductor (as: resistance device or Metal Structural Parts etc.) is to veneer layout and the not influence of product complete machine scheme, and placement-and-routing is very flexible; Resistance device, the Metal Structural Parts volume is little and can place flexibly, has saved the space of terminal electronic product, makes product littler, more portable.

Accordingly, present embodiment provides a kind of electronic equipment, and this electronic equipment comprises printed circuit board (PCB), and this printed circuit board (PCB) can be the printed circuit board (PCB) that provides in the foregoing description specifically, comprising: signal lead 101 and conductor 102; Wherein,

Correspondingly, signal lead 101 and conductor 102 specifically can be signal lead and the conductors that provides in the above-mentioned printed circuit board embodiment, repeat no more here.

The electronic equipment that present embodiment provides has advantages such as cost is low, fabrication cycle is short, reflux characteristic is good, wiring is flexible, volume is little, more portable, in the electronic product field, has stronger price competitiveness.

The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. a printed circuit board (PCB) is characterized in that, described printed circuit board (PCB) (10) comprising: signal lead (101) and conductor (102); Wherein,

2. printed circuit board (PCB) as claimed in claim 1 is characterized in that, described printed circuit board (PCB) (10) is a single-clad board, and described signal lead (101) is through described no plane of reference zone.

3. printed circuit board (PCB) as claimed in claim 1 is characterized in that, described printed circuit board (PCB) (10) is a double-sided printed-circuit board, and described signal lead (101) is through described plane of reference discontinuity zone.

4. as each described printed circuit board (PCB) of claim 1 to 3, it is characterized in that described signal lead (101) is big electric current cabling or high speed signal cabling.

5. as each described printed circuit board (PCB) of claim 1 to 3, it is characterized in that described conductor (102) is resistance device or Metal Structural Parts.

6. an electronic equipment is characterized in that, described electronic equipment comprises: printed circuit board (PCB) (10), and described printed circuit board (PCB) (10) comprising: signal lead (101) and conductor (102); Wherein,

7, electronic equipment as claimed in claim 6 is characterized in that, described printed circuit board (PCB) (10) is a single-clad board, and described signal lead (101) is through described no plane of reference zone.

8, electronic equipment as claimed in claim 6 is characterized in that, described printed circuit board (PCB) (10) is a double-sided printed-circuit board, and described signal lead (101) is through described plane of reference discontinuity zone.

As each described electronic equipment of claim 6 to 8, it is characterized in that 9, described signal lead (101) is big electric current cabling or high speed signal cabling.

As each described electronic equipment of claim 6 to 8, it is characterized in that 10, described conductor (102) is resistance device or Metal Structural Parts.