CN205921814U - Circuit board apparatus and electronic equipment - Google Patents
Circuit board apparatus and electronic equipment Download PDFInfo
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- CN205921814U CN205921814U CN201620694801.7U CN201620694801U CN205921814U CN 205921814 U CN205921814 U CN 205921814U CN 201620694801 U CN201620694801 U CN 201620694801U CN 205921814 U CN205921814 U CN 205921814U
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- transmission line
- circuit board
- line
- earth signal
- signal line
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Abstract
The utility model discloses a circuit board apparatus for reduce crosstalking between the transmission line. Circuit board apparatus includes the circuit board, the transmission line, the setting is in on the circuit board, the earth signal line, equipment is in on the circuit board, be used for the envelope the transmission line, be provided with at least one ground connection via hole of being connected with the horizon on the earth signal line, wherein, the interfering signal's that the transmission line was propagated out electromagnetic energy passes through at least one ground connection via hole can conduct extremely the horizon. The utility model also discloses a corresponding electronic equipment.
Description
Technical field
This utility model is related to electronic technology field, particularly to a kind of circuit board arrangement and electronic equipment.
Background technology
The function being capable of with electronic product gets more and more, and the complexity of integrated circuit constantly increases, pcb
The design of (printed circuit board, printed circuit board) is also more and more diversified, at present, can be by pcb plate
Transmission line high speed signal.
When high speed signal is propagated along the wire on pcb, substantially passing according to electromagnetic wave propagation mode
Broadcast, that is, in whole transmission path, energy is present in time in the electric field and magnetic field of alternate.But in fact, electromagnetism
Field energy can not be entirely confined in the wire of propagation, outside significant component of energy of electromagnetic field wire.Institute
So that if, nearby have other conductors or pcb circuit, when high speed signal is along a certain wire spread, its electric field will
It is coupled in other conductor lines by certain mode.When the electromagnetic field intensity of this coupling reaches a certain amount of, will make to face
Near line road produce cannot expected signal, which results in crosstalk.
At present, can directly design large-area ground connection Copper Foil to isolate mutual high-frequency signal, to reduce transmission
The problem of the crosstalk between line, but such mode can increase routing layer indirectly, improves the cost of Product processing, and because monoblock connects
Ground Copper Foil occupies pcb routing layer, therefore reduces the space of wiring, is unfavorable for that pcb designs.
It can be seen that, there is no the preferable mode reducing transmission line-to-line crosstalk at present.
Utility model content
This utility model embodiment provides a kind of circuit board arrangement and electronic equipment, in order to reduce the crosstalk between transmission line.
In a first aspect, providing a kind of circuit board arrangement, comprising:
Circuit board；
Transmission line；It is arranged on described circuit board；
Earth signal line, equipment on described circuit board, for transmission line described in envelope, described earth signal line is provided with
At least one ground via that ground level connects；
Wherein, the electromagnetic energy of the interference signal that described transmission line propagates from is by least one ground via energy described
Enough conduction are to described ground level.
Optionally, described transmission line is high-speed transmission line.
Optionally, described earth signal line in the set location on described circuit board and described transmission line on described circuit board
Set location between distance be n times of live width of described high-speed transmission line, n is the integer more than or equal to 1.
Optionally, at least one ground via described each two adjacently the distance between via is equal.
Optionally, at least one ground via described each two adjacently the distance between via is described interference signal
Wavelength 1/20th.
Optionally, described earth signal line has the first width, and described earth signal line can produce coupling to described transmission line
Electric capacity, to control the impedance of described transmission line.
Optionally, the impedance of described transmission line is 50 ohm.
Second aspect, provides a kind of electronic equipment, comprising:
Housing, has accommodation space；Circuit board arrangement described in first aspect, is arranged in described accommodation space；At least
One electronic component, is arranged on described circuit board arrangement.
In this utility model embodiment, circuit board arrangement can include circuit board, transmission line and envelope around transmission line
Earth signal line, at least one ground via being connected with ground level is provided with earth signal line, when signal is in transmission line
During transmission, the electromagnetic energy of the interference signal propagating from from transmission line can be conducted by ground via and cause ground level.Pass through
Such mode, can reduce the electromagnetic energy of interference signal effectively, and then effectively reduces transmission line to other biographies nearby
The crosstalk that defeated line causes, simultaneously as by the way of earth signal line envelope transmission line, need not be coated by large-area copper sheet
Transmission line, thus reducing material cost, also saves the space of wiring, is conducive to the wires design of circuit board.
Brief description
The structural representation of the circuit board arrangement that Fig. 1 provides for this utility model embodiment；
The structural representation of the electronic equipment that Fig. 2 provides for this utility model embodiment.
Reference:
10: circuit board 11: transmission line 12: earth signal line
13: ground via
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described it is clear that being retouched to the technical scheme in this utility model embodiment
The embodiment stated is a part of embodiment of this utility model, rather than whole embodiments.Based on the enforcement in this utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into
The scope of this utility model protection.
In addition, the terms "and/or", a kind of only incidence relation of description affiliated partner, expression there may be
Three kinds of relations, for example, a and/or b, can represent: individualism a, there are a and b, these three situations of individualism b simultaneously.
In this utility model embodiment, circuit board arrangement can include circuit board, transmission line and envelope around transmission line
Earth signal line, at least one ground via being connected with ground level is provided with earth signal line, when signal is in transmission line
During transmission, the electromagnetic energy of the interference signal propagating from from transmission line can be conducted by ground via and cause ground level.Pass through
Such mode, can reduce the electromagnetic energy of interference signal effectively, and then effectively reduces transmission line to other biographies nearby
The crosstalk that defeated line causes, simultaneously as by the way of earth signal line envelope transmission line, need not be coated by large-area copper sheet
Transmission line, thus reducing material cost, also saves the space of wiring, is conducive to the wires design of circuit board.
Below in conjunction with the accompanying drawings this utility model is preferred embodiment described in detail.
Refer to Fig. 1, a kind of circuit board arrangement be provided, this circuit board arrangement can include circuit board 10, transmission line 11,
Holding wire 12.Wherein, transmission line 11 can arrange on the circuit board 10, and earth signal line 12 can with equipment on the circuit board 10, ground
Holding wire 12 can be used for envelope transmission line 11, and earth signal line 12 is provided with least one ground via being connected with ground level
13；The electromagnetic energy of the interference signal that transmission line 11 propagates from can be conducted to Horizon by least one ground via 13
Face.
Circuit board 10 can be pcb plate or fpc (the flexible printed circuit of traditional hard
Board, flexible print wiring board) plate, can also be Rigid Flex, etc., this utility model embodiment is for circuit board 10
Material be not construed as limiting.Circuit board 10 can be single sided board or dual platen, or can also be multi-layer sheet, etc., this
Utility model embodiment is equally not construed as limiting for the number of plies of circuit board 10.
Continuing with referring to Fig. 1, transmission line 11 can be provided with the circuit board 10, the quantity of transmission line 11 can be according to reality
The needs of border design determining, can be one, two, three, etc., this utility model embodiment is for the number of transmission line 11
Amount is not construed as limiting, and the such as quantity of transmission line 11 can be to have three shown in Fig. 1.Width for transmission line 11 is how many,
This utility model embodiment is equally not construed as limiting, and the signal that can transmit according to actual needs, to determine, such as, needs transmission
Quantity of information is larger, then can arrange wider by transmission line 11, or such as, needs the quantity of information of transmission less, then can
So that the width of transmission line 11 to be arranged to obtain relative narrower.In actual applications, transmission line 11 is accessed the circuit on circuit board 10
Afterwards, in whole circuit, transmission line 11 can play the effect of transmission signal, accesses on circuit board 10 for by transmission line 11
The mode of circuit, this utility model embodiment is not construed as limiting, for example, it is possible to be provided for the mistake of connection line on transmission line 11
Hole, then by the via on transmission line 11, transmission line 11 can be connected with the circuit designing on the circuit board 10, etc..
Earth signal line 12 can be had with envelope around transmission line 11, earth signal line 12 can be complete envelope in transmission line
It is also possible to the transmission line 11 of envelope part, this utility model embodiment is not construed as limiting surrounding to this, as long as can be by transmission line 11
The electromagnetic energy of the interference signal propagating from is transmitted to ground level.Article one, earth signal line 12 can be used to one biography of envelope
It is also possible to envelope plurality of transmission lines 11, this can determine defeated line 11 according to actual design requirement, this utility model embodiment
This is not construed as limiting, such as, shown in Fig. 1 an earth signal line 12 envelope three transmission lines 11.Because this utility model is real
Apply the mode that example employs earth signal line 12 envelope transmission line 11, compared to current, a monoblock copper is coated on whole transmission line
The mode of skin, the cabling space on the circuit board 10 of occupancy is relatively fewer, and relative increase keeps for the space of engineer's wiring,
It is more beneficial for the wires design to circuit board 10, simultaneously because copper sheet need not be coated, also reduces the use of material copper, reduce
Cost of manufacture, and reduce the weight of circuit board arrangement, and then reduce the weight of the electronic equipment using circuit board arrangement
Amount, is conducive to the design of the lightening of electronic equipment and miniaturization.
Continuing with referring to Fig. 1, at least one ground via 13 can be provided with earth signal line 12, for ground via
13 specific quantity are how many, and this utility model embodiment is not construed as limiting, and can be determined according to actual design requirement, than
As, an earth signal line 12 can have 6 ground vias 13, etc..By ground via 13 can by earth signal line 12 with
Ground level connects, and for ground via 13 is and how to be connected with ground level, this utility model embodiment is equally not construed as limiting, example
As circuit board 10 can be multilayer circuit board, wherein have a face to be special ground plane, then ground via 13 can be
Connect with ground plane, or for example, circuit board 10 can be the circuit board of monolayer, and circuit board 10 is provided with multiple ground connection
Point, then ground via 13 can be connected with the earth point on circuit board 10, etc., as long as ground via 13 can be passed through
Earth signal line 12 is connected with ground level.By such structure, earth signal line 12 and being arranged on earth signal line 12
The electromagnetic energy of interference signal that transmission line 11 can be propagated from of at least one ground via 13 be transmitted to ground level, enter
And the string that the electromagnetic energy reducing the interference signal that transmission line 11 propagates from causes to other transmission lines near transmission line 11
Disturb, improve the performance of circuit board arrangement.
Optionally, transmission line 11 can be high-speed transmission line.
Transmission line 11 can be high-speed transmission line, then transmission line 11 namely can be used to transmit the transmission of high speed signal
The higher digital signal of line 11, high speed signal i.e. transfer rate, such as it has been generally acknowledged that frequency is up to or over 45mhz
The digital signal of～50mhz is high speed signal, etc..When high speed signal is transmitted in transmission line 11 it is possible to can be
Surrounding's generation interference signal of high-speed transmission line, and then the electromagnetism field energy of interference signal may be formed in the outside of transmission line 11
Amount, because around high-speed transmission line, envelope has earth signal line 12, the interference signal that therefore high-speed transmission line propagates from is permissible
Formed with earth signal line 12 and couple, such that it is able to by earth signal line 12 around high-speed transmission line for the envelope and be arranged on ground
The electromagnetic energy conduction of the interference signal that high-speed transmission line is propagated from by least one ground via 13 on holding wire 12 causes
Ground level, thus reducing the crosstalk that high-speed transmission line causes to other neighbouring transmission lines, being conducive to the design of circuit board, also carrying
Rise the performance of circuit board arrangement.
Optionally, when transmission line 11 is high-speed transmission line, earth signal line 12 set location on the circuit board 10 with high
Distance between fast transmission line set location on the circuit board 10 can be n times of live width of high-speed transmission line, n be more than or equal to
1 integer.
The live width of earth signal line 12 can determine according to actual needs, and such as definitely the live width of holding wire 12 is 1mm,
The live width of high-speed transmission line equally can determine according to the actual requirements, such as, needs the signal of transmission from high-speed transmission line
More, then such as the live width of high-speed transmission line can be set to 1.2mm.Due to can be by earth signal line 12 and high-speed transfer
The distance between line is designed as n times of the live width of high-speed transmission line, and the live width of such as high-speed transmission line is set to 1.2mm, then
The distance between earth signal line 12 and high-speed transmission line can be designed as 1 times of 1.2mm, that is, 1.2mm, or can also
Just the distance between earth signal line 12 and high-speed transmission line be designed as 2 times of 1.2mm, 3 times, etc., this utility model is implemented
How many examples is specially not construed as limiting for the value of n.Certainly, earth signal line 12 set location on the circuit board 10 and high-speed transfer
Distance between line set location on the circuit board 10 can also others be worth, can be according to the requirement of actual technique and design
To determine, such as, according to the demand of technique and design, the distance between earth signal line 12 and high-speed transmission line to be set to
5mm, etc., this utility model embodiment is equally not construed as limiting to this.As such, it is possible to make high-speed transmission line and envelope at a high speed
Preferably coupled between earth signal line 12 around holding wire, so more effectively reduce high-speed transmission line with neighbouring
Crosstalk between other transmission lines, is conducive to the design of circuit board, also improves the performance of circuit board arrangement.
Optionally, at least one ground via 13 each two adjacently the distance between via 13 is equal.
That is, on earth signal line 12, multiple ground vias 13 may be provided with, then each two can be made adjacent
The distance between ground via 13 all equal, the interference signal that so can more effectively transmission line 11 be propagated from
Electromagnetic energy is transmitted to ground level, and then is effectively reduced crosstalk.
Optionally, the distance between each two at least one ground via 13 adjacently via 13 is specifically worth and is
How much, this utility model embodiment is not construed as limiting, and in for example, at least one ground via 13, each two is adjacently between via 13
Distance be interference signal wavelength 1/20th.
The wavelength of interference signal can be the wavelength of the maximum wave frequency of the rising edge of interference signal, or can also be dry
Disturb the wavelength of the maximum wave frequency of the trailing edge of signal, then each two adjacently via 13 at least one ground via 13
Between distance can be interference signal the wavelength of maximum wave frequency of rising edge 1/20th or interference signal
The wavelength of maximum wave frequency of trailing edge 1/20th, this utility model embodiment is not construed as limiting to this.Or, according to
Actual demand, at least one ground via 13, adjacently the distance between via 13 can also be more than interference signal to each two
Wavelength 1/20th, such as, can be by between each two at least one ground via 13 adjacently via 13
Spacing is set to 1/10th of the wavelength of interference signal, etc..As such, it is possible to more efficiently transmission line 11 be propagated from
The electromagnetic energy of interference signal pass through the conduction of at least one ground via 13 and cause ground level, and then more preferable reduce transmission line 11
Crosstalk and other neighbouring transmission lines between, is conducive to the design of circuit board, also improves the performance of circuit board arrangement.
Optionally, earth signal line 12 has the first width, and earth signal line 12 can produce coupled capacitor to transmission line 11, enters
And can be with the impedance of controlling transmission line 11.
First width is specially how many, this utility model embodiment is not construed as limiting, can be according to actual design need
Ask to determine, for example, the first width that earth signal line 12 has is such as 1mm, i.e. the width of earth signal line 12 is 1mm, or
For example, the first width can be 0.8mm, then that is the width of earth signal line 12 is 0.8mm, etc..Earth signal line 12
Coupled capacitor can be produced to transmission line 11, based on the principle of co-planar waveguide impedance control, can be by controlling earth signal line 12
The impedance to reach controlling transmission line 11 of width and/or the distance between earth signal line 12 and transmission line 11 purpose, for example,
The width of local signal line 12 is 1mm, and when the distance between earth signal line 12 and transmission line 11 are 1mm, co-planar waveguide hinders
Anti- optimal, then the width that can be configured to holding wire 12 is 1mm, and be configured between holding wire 12 and transmission line 11 away from
From for 1mm, etc..By such mode, can preferably reduce the crosstalk between transmission line 11 and neighbouring transmission line, have
Beneficial to the design of circuit board, also improve the performance of circuit board arrangement.
Optionally, for being how many by the impedance control of transmission line 11, this utility model embodiment is not construed as limiting, for example
The impedance control of transmission line 11 can be 50 ohm.
So that the better performances of circuit board arrangement, therefore the impedance control of transmission line 11 can be 50 ohm, example
As, when the width of earth signal line is set to 1mm, so that the impedance of transmission line 11 is 50 ohm, etc..
Refer to Fig. 2, based on identical inventive concept, this utility model embodiment provides a kind of electronic equipment, this electronics
Equipment can include having the circuit board arrangement shown in the housing of accommodation space, Fig. 1 and be arranged on circuit board arrangement extremely
A few electronic component.
Electronic equipment in this utility model embodiment can include pc (personal computer), pad (panel computer), mobile phone
Etc. different electronic equipments, as long as the electronic equipment with circuit board can be the electronics in this utility model embodiment
Equipment.
In this utility model embodiment, circuit board arrangement can include circuit board, transmission line and envelope around transmission line
Earth signal line, at least one ground via being connected with ground level is provided with earth signal line, when signal is in transmission line
During transmission, the electromagnetic energy of the interference signal propagating from from transmission line can be conducted by ground via and cause ground level.Pass through
Such mode, can reduce the electromagnetic energy of interference signal effectively, and then effectively reduces transmission line to other biographies nearby
The crosstalk that defeated line causes, simultaneously as by the way of earth signal line envelope transmission line, need not be coated by large-area copper sheet
Transmission line, thus reducing material cost, also saves the space of wiring, is conducive to the wires design of circuit board.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to this utility model
New protection domain.So, if of the present utility model these modification and modification belong to this utility model claim and its
Within the scope of equivalent technologies, then this utility model is also intended to comprise these changes and modification.
Claims (8)
1. a kind of circuit board arrangement is it is characterised in that include:
Circuit board；
Transmission line, is arranged on described circuit board；
Earth signal line, equipment, on described circuit board, for transmission line described in envelope, described earth signal line is provided with and Horizon
At least one ground via that face connects；
Wherein, the electromagnetic energy of the interference signal that described transmission line propagates from can be passed by least one ground via described
It is directed at described ground level.
2. device as claimed in claim 1 is it is characterised in that described transmission line is high-speed transmission line.
3. device as claimed in claim 2 it is characterised in that set location on described circuit board for the described earth signal line with
Distance between the set location on described circuit board for the described high-speed transmission line is n times of the live width of described high-speed transmission line, and n is
Integer more than or equal to 1.
4. device as claimed in claim 3 is it is characterised in that each two adjacently mistake at least one ground via described
Distance between hole is equal.
5. device as claimed in claim 4 is it is characterised in that each two adjacently mistake at least one ground via described
Distance between hole is 1st/20th of the wavelength of described interference signal.
6. device as claimed in claim 1 is it is characterised in that described earth signal line has the first width, described earth signal line
Coupled capacitor can be produced to described transmission line, to control the impedance of described transmission line.
7. device as claimed in claim 6 is it is characterised in that the impedance of described transmission line is 50 ohm.
8. a kind of electronic equipment is it is characterised in that include:
Housing, has accommodation space；
Circuit board arrangement as described in claim arbitrary in claim 1-7, is arranged in described accommodation space；
At least one electronic component, is arranged on described circuit board arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694801.7U CN205921814U (en) | 2016-07-04 | 2016-07-04 | Circuit board apparatus and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694801.7U CN205921814U (en) | 2016-07-04 | 2016-07-04 | Circuit board apparatus and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205921814U true CN205921814U (en) | 2017-02-01 |
Family
ID=57875622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620694801.7U Active CN205921814U (en) | 2016-07-04 | 2016-07-04 | Circuit board apparatus and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205921814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566353A (en) * | 2019-09-26 | 2021-03-26 | 中兴通讯股份有限公司 | Circuit board and communication equipment |
-
2016
- 2016-07-04 CN CN201620694801.7U patent/CN205921814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566353A (en) * | 2019-09-26 | 2021-03-26 | 中兴通讯股份有限公司 | Circuit board and communication equipment |
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