CN1148842C - Method for preventing crosstalk in high density electric connector - Google Patents
Method for preventing crosstalk in high density electric connector Download PDFInfo
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- CN1148842C CN1148842C CNB991138554A CN99113855A CN1148842C CN 1148842 C CN1148842 C CN 1148842C CN B991138554 A CNB991138554 A CN B991138554A CN 99113855 A CN99113855 A CN 99113855A CN 1148842 C CN1148842 C CN 1148842C
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- high density
- terminal
- electrical connector
- density electrical
- metallic conductor
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Abstract
The present invention relates to a method for enabling a high-density electric connector to effectively prevent the crosstalk phenomenon. In a high-density electric connector, metal conductors are arranged beside terminal containing channels which are in high-density arrangement, and the metal conductors are conducted with a grounding path of the electric connector; the minimum distance between any conductive terminal and one metal conductor beside the conductive terminal is permanently smaller than the interval between the terminal and each optional adjacent terminal. Thus, when a high-frequency signal passes through the terminals, the metal conductors can attract an electric field and a magnetic field generated around the terminals by the high-frequency signal in advance, so the distribution range of the high-frequency signal can be changed to avoid the influence of the other terminals; thus, the signal coupling rate among all the terminals can be reduced to the allowable range, so the crosstalk interference can be eliminated.
Description
The present invention is a kind of method that makes high density electrical connector effectively prevent the cross-talk phenomenon, relate in particular to a kind ofly by means of the metallic conductor of ground connection being set, and control the distance between this metallic conductor and conducting terminal and reach the good electric connector method to set up that prevents the cross-talk effect at the conducting terminal side.
For computer and peripheral electronic equipment thereof, tend to the development of functional diversities and intelligent direction in recent years gradually, make that the signal amount of required transmission has the trend that thereupon increases in the whole system, yet in the case, the outward appearance of computer and correlated parts and volume but trend towards microminiaturized direction to be developed, so, for cooperating the dual development that increases signal transmission quantity and the microminiaturization of all kinds of electronic component volume simultaneously, the conducting terminal number is many and the thin little high density electrical connector of volume just arises at the historic moment, and more and more is widely used in computer and the peripheral electronic equipment thereof.For being applied in the high density electrical connector of high-frequency transmission, because its conducting terminal number increases and is densely distributed, make two two-terminal mutual spacings from very near, thereby when the high-frequency electronic signal passes through, very easily produce the phenomenon that interaction crosstalk disturbs between these adjacent conductive terminals, cause the signal transmission unstable and influence the normal operation of electronic equipment.So; high density electrical connector can adopt the cross-talk of variety of way to prevent that the signal transmission course is mutual usually; common a kind of elimination cross-talk mode is promptly to settle an earth terminal every a signal terminal in high density electrical connector at present, or adopts " signal terminal-earth terminal-signal terminal " this deploying mode of an earth terminal of settling between per two signal terminals to carry out terminal arrangement.Yet, adopt this mode no doubt can reach the effect that prevents cross-talk preferably, but owing to the earth terminal that in the conducting terminal sum, comprises about half, that is, have only 50 conducting terminal of percentage can supply transmission signal usefulness in this electric connector, the availability of this electric connector terminal transmission signal has only 50%.Consider from another angle, increased by 50% valueless volume on this electric connector, obviously do not meet the trend of computer and each electronic component volume microminiaturization, consider also to be unfavorable for reducing cost to promote product competitiveness and business economic benefit from economic angle.
Also have in addition a kind ofly to prevent that the mode of signal when transmission interaction crosstalk from being the metallic conductor that a ground connection just is set between the per two row's conducting terminals of high density electrical connector, this class formation can be consulted cases such as No. the 84106427th, TaiWan, China patent.But, this prior art obviously only is applicable to the cross-talk that produces when preventing the signal transmission between the conducting terminal of these metallic conductor both sides, and be difficult to further to prevent that the cross-talk that produced between each adjacent conductive terminal, nature from can't make high density electrical connector reach comprehensive, the good cross-talk effect that prevents in this metallic conductor homonymy.
The object of the present invention is to provide a kind of method that makes high density electrical connector effectively prevent the cross-talk phenomenon, to guarantee when high-frequency signals passes through high density electrical connector, thereby can not appearring in its each adjacent conductive terminal each other, the cross-talk phenomenon can not guarantee that the signal of transmission is stable, and can under the condition that does not increase volume of electric connector own and size, improve the deploying density of signal terminal in the electric connector, the utilization rate of the effective transmission electronic signal of conducting terminal is greatly improved, or under the prerequisite that keeps the signal terminal invariable number, reduce the volume size of electric connector, with the operating efficiency of further raising electric connector and simplify the structure and the processing procedure of electric connector.
The present invention also aims to provide a kind of and can effectively prevent the cross-talk phenomenon, guarantee the stable high density electrical connector of transmission signal.
The object of the present invention is achieved like this: the terminal accommodating passage side appropriate position that is the high density laying in the insulating body of high density electrical connector is provided with metallic conductor, and in these terminal accommodating passages respectively correspondence be assembled into several conducting terminals, make the conducting that is connected of the default grounding path of this metallic conductor and electric connector simultaneously, or make itself and specific power circuit conducting and be in electriferous state.And the minimum distance of arbitrary conducting terminal and its side metallic conductor is all less than the spacing of this conducting terminal with arbitrarily adjacent another terminal.Like this, when the high-frequency electronic signal by this high density deploying conducting terminal and when producing the electric field that continues and magnetic field around it, because this metallic conductor is nearest apart from conducting terminal, thereby this metallic conductor can attract in advance and influence to be distributed in these conducting terminals electric field and magnetic field on every side, its zone of action scope is changed and avoid it to have influence on each conducting terminal, especially the high-frequency electronic signal between the adjacent conductive terminal, maximum signal coupling efficiency between the conducting terminal is reduced in the allowed band thereby make in twos, reaches the purpose of eliminating cross-talk.
The present invention compared with prior art, its effect that prevents cross-talk is better, and owing in electric connector, need not to be provided with earth terminal, making electric connector have bigger space assembles transmission signal and the signal terminal number can be doubled with conducting terminal, or keep the signal terminal invariable number and the volume size of electric connector can be reduced half, greatly improved the serviceability and the market competitiveness of this series products.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the disclosed metallic conductor and the partial structurtes schematic diagram of terminal deploying relation.
Fig. 2 is testing between adjacent two conducting terminals of gained signal coupling efficiency (Cr) with the variation relation schematic diagram of the distance (D) of metallic conductor and conducting terminal according to metallic conductor shown in Figure 1 and conducting terminal collocation method under a certain condition.
Fig. 3 is testing between adjacent two conducting terminals of gained signal coupling efficiency (Cr) with the variation relation schematic diagram of the distance (D) of metallic conductor and conducting terminal according to metallic conductor shown in Figure 1 and conducting terminal collocation method under another condition.
Fig. 4 prevents the cross-talk method and the stereogram of a kind of high density electrical connector of implementing according to the present invention.
Fig. 5 is the schematic top plan view of the local structure of high density electrical connector shown in Figure 4.
Fig. 6 prevents the cross-talk method and the stereogram of another high density electrical connector of implementing according to the present invention.
Fig. 7 is the cross-sectional schematic of the local structure of high density electrical connector shown in Figure 6.
Fig. 8 is the partial structurtes schematic diagram of the 3rd embodiment of disclosed metallic conductor and conducting terminal configuration mode.
Fig. 9 is the partial structurtes schematic diagram of the 4th embodiment of disclosed metallic conductor and conducting terminal configuration mode.
Figure 10 is the partial structurtes schematic diagram of the 5th embodiment of disclosed metallic conductor and conducting terminal configuration mode.
See also shown in Figure 1, high density electrical connector of the present invention prevents that the cross-talk method from being that the appropriate position that is close to conducting terminal 2 on the insulating body 1 of high density electrical connector is provided with a sheet metal 3, this sheet metal 3 can be connected with the default ground connection conductive path of high density electrical connector, also can connect on the fixing power supply of magnitude of voltage and is in electriferous state.Thereby after high density electrical connector was mounted to circuit board, this sheet metal 3 was in the electriferous state of ground state or tool fixed voltage value.The setting of this sheet metal 3 is to be principle with the minimum distance D of itself and the arbitrary conducting terminal 2 of side all permanent spacing G less than this terminal and adjacent arbitrarily another conducting terminal 2.Thereby, when the high-frequency electronic signal produces electric field and magnetic field by conducting terminal 2 and around it, because this sheet metal 3 is nearer more than the spacing of adjacent both ends apart from conducting terminal 2, therefore originally be distributed in that electric field around the conducting terminal 2 will be subjected to the influence of these sheet metal 3 existence with magnetic field and the phenomenon that forms redistribution, and most electric field and magnetic field can be by these sheet metal 3 electrical attraction, and make formed electric field of live terminal and magnetic field concentration near the zone between sheet metal and this live terminal, between the two maximum coupling efficiency Cr (Coupling Rate) will be reduced in the allowed band during each adjacent conductive terminal 2 transmission signal thus, thereby effectively eliminate the cross-talk between the conducting terminal 2.
See also Fig. 2 and shown in Figure 3 again, be respectively the configuration mode of disclosed high density electrical connector to be experimentized to detect the variation relation figure of gained sheet metal 3 to signal coupling efficiency Cr between the distance D of conducting terminal 2 and adjacent two conducting terminals 2 under different condition, wherein coupling efficiency is that the signal rate of transform (degree that promptly reflects cross-talk) of being accepted unvested signal value with the particular conductivity terminal serves as that value is measured.As shown in Figure 2, in conducting terminal 2 width W own is that 0.3mm, length L are that 10mm and transmission signal frequency are under the condition of 1Ghz, adjacent spacing G is the signal coupling efficiency Cr on the conducting terminal of 0.5mm, obviously along with sheet metal 3 reduces with the reducing of distance D of conducting terminal 2, especially when this distance D during less than the spacing G of adjacent two conducting terminals 2 when (D is 0.4mm in as figure), signal coupling efficiency Cr is reduced near about 15% between adjacent two conducting terminals 2, has reached the scope that general electronic equipment reliable operation is allowed this moment.In addition, be to be that 0.3mm, length L are that the frequency of 10mm and transmission signal is under the condition of 1Ghz as shown in Figure 3 in conducting terminal 2 width W own, adjacent spacing G is that the signal coupling efficiency Cr of two conducting terminals of 0.8mm and sheet metal 3 are to the variation relation between the distance D of conducting terminal 2, wherein, when distance D less than 3mm below, be that the ratio of D/G is when diminishing, signal coupling efficiency Cr between adjacent two conducting terminals 2 reduces rapidly, and when distance D reaches 0.2mm, the Cr value more is reduced to 15%, has reached the preferable effect that prevents cross-talk.
Detect and can learn by above-mentioned experiment, when the distance D of metallic conductor and conducting terminal during less than the spacing G of adjacent two conducting terminals, this metallic conductor can effectively influence conducting terminal between Electric Field Distribution, thereby reach the good cross-talk effect that prevents.Particularly the length L at conducting terminal is not more than under the implementation condition of 1.0mm greater than the spacing G of 100MHz and adjacent two conducting terminals less than 25.4mm, signal frequency, adopts the inventive method to prevent that the effect of cross-talk is better.
Seeing also shown in Figure 4 is according to a kind of high density electrical connector of the invention process, it includes insulating body 1 and plurality of conductive terminals 2, wherein this insulating body 1 is a lengthwise ennation, it is made as interface 11 with a side of docking the electric connector butt joint, the another side then is made as composition surface 12 to engage with printed circuit board (PCB) (not shown) relatively, be provided with docking section 13 towards butt joint direction protrusion on this interface 11, also extend for longitudinal this docking section 13, and be laid with several respectively in its two side walls 14 upper edges butt joint direction and accommodate conduit 15, and these accommodate conduit 15 and the interface 11 of the body 1 that further insulate certainly is through to composition surface 12.In addition, plurality of conductive terminals 2 correspondences are contained in these and accommodate in the conduit 15, protruding docking section 13 two side walls, the 14 outer butt joint usefulness of doing that are exposed to of its part, and then 12 protrusions are soldered on the circuit board with the surface adhesion technology another part from the composition surface.
Please continue to consult Fig. 4 and Fig. 5, be provided with sheet metal 3 near conducting terminal 2 places between the two side walls 14 on this docking section 13, it is connected conducting and is in the grounded circuit state with the grounding path (not shown) that high density electrical connector is scheduled to.Wherein, the minimum distance D of arbitrary conducting terminal 2 and its side sheet metal 3 is all the time less than the spacing G of this terminal with adjacent arbitrarily another conducting terminal 2.Whereby, when the high-frequency electronic signal passes through, because sheet metal 3 is littler than the spacing G of adjacent two conducting terminals 2 with the distance D of conducting terminal 2, the electric field and the magnetic field that are distributed in conducting terminal 2 surrounding spaces will change its distribution scenario because of the influence of this sheet metal 3.So, can change near conducting terminals 2 electromagnetic field effects, and avoid electromagnetic action to other terminal position effectively to prevent the cross-talk between the conducting terminal 2 by means of this sheet metal 3.
Again, seeing also shown in Figure 6 is another high density electrical connector of implementing according to the present invention, its include insulating body 1 ' and plurality of conductive terminals 2 ', this insulating body 1 ' be a lengthwise ennation wherein, its with a side of docking electric connector butt joint be made as interface 11 ', its relative another side then is made as composition surface 12 ' to engage with printed circuit board (PCB) (not shown), this interface 11 ' go up towards insulating body 1 ' internal recess be provided with docking groove 13 ', this docking groove 13 ' also extend along longitudinally, and in its inwall 14 ' upper edge, both sides butt joint direction be laid with respectively several accommodate conduit 15 ', and these accommodate conduit 15 ' again further from insulating body 1 ' docking groove 13 ' be through to composition surface 12 '.In addition, plurality of conductive terminals 2 ' correspondence be housed in these accommodate conduit 15 ' in, the protruding docking groove 13 ' both sides inwall 14 ' outer butt joint usefulness of doing that is exposed to of its part, another part then is soldered on the circuit board with the surface adhesion technology by composition surface 12 ' protrusion.
See also Fig. 6 and Fig. 7, respectively in insulating body 1 ' docking groove 13 ' both sides near conducting terminal 2 ' the appropriate position be provided with sheet metal 3 ', make the default grounding path (not shown) of itself and high density electrical connector be connected conducting and be in the grounded circuit state, and, arbitrary conducting terminal 2 ' with its side sheet metal 3 ' minimum distance D all less than this terminal and arbitrarily adjacent another conducting terminal 2 ' spacing G.Like this, when the high-frequency electronic signal by conducting terminal 2 ' and when its surrounding space produces electric field and magnetic field, because sheet metal 4 ' apart from these conducting terminals 2 ' recently, thereby the electric field that is present in surrounding space and magnetic field can be subjected to this sheet metal 4 ' influence and relative dense distribution this sheet metal 4 ' and terminal between the zone near, make conducting terminal 2 in twos ' between electric field and magnetic field intensity greatly weaken, and effectively avoid these conducting terminals 2 ' electric signal between the cross-talk phenomenon takes place.
In the above-described embodiments, by means of being distributed in the electric field of conducting terminal 2,2 ' on every side and magnetic field in advance, the sheet metal 3,3 of ground connection ' attract reaches the effect that effectively prevents cross-talk, thereby can remove deploying at interval in the existing high density electrical connector, in order to eliminate the earth terminal of cross-talk, make high density electrical connector can save bigger configuration space and assemble more signal terminal, improved its utilance and operating efficiency.Perhaps, also can under the prerequisite that keeps the signal terminal invariable number, remove the configuration space of former earth terminal, make the overall dimensions of high density electrical connector reduce half, be beneficial to the microminiaturization of electronic component.
In addition, see also shown in Figure 8 again, for a kind of high density electrical connector that the many rows of tool are the conducting terminal that array arranges, for preventing the cross-talk between the adjacent conductive terminal, can be in per two row's conducting terminals 2 " between two sheet metals 3 are set ", make this two metal sheets 3 " be in the paired configuration status of charged and ground connection respectively; and the minimum distance D of each sheet metal 3 " with the arbitrary conducting terminal 2 in its both sides " is all less than any two adjacent conductive terminals 2 in the homonymy (with row) " spacing G, thereby can prevent cross-talk effectively.Perhaps; as shown in Figure 9; can around this is conducting terminal 2 that array arranges, annular metal sheet 3 be set and these conducting terminals 2 are surrounded wherein in the lump; and the minimum distance D of arbitrary conducting terminal 2 and its side sheet metal 4 is all less than the spacing G of this terminal with arbitrarily adjacent another conducting terminal 2 ; like this; not only can reach the effect that effectively prevents cross-talk, also can be by means of this annular sheet metal 4 ' generation is covered protective effect and effectively prevented the interference of external electromagnetic waves to conducting terminal 2 to conducting terminal 2 .
Another kind of in addition execution mode as shown in figure 10, be in insulating body 1 " " per four metallic conductor 3 " " is set in the middle of the adjacent conductive terminal 2 " " in twos, the cross section of this metallic conductor 3 " " slightly is star, and in these conducting terminals 2 " ", the minimum distance D of arbitrary terminal and metallic conductor 3 " " is all less than the spacing G of adjacent another terminal arbitrarily around this terminal and its.The same with above-mentioned principle, can effectively prevent also that by means of this metallic conductor 3 " " conducting terminal from the cross-talk phenomenon taking place when the transmission electronic signal.
Claims (15)
1. method that makes high density electrical connector effectively prevent the cross-talk phenomenon, several terminal accommodating conduit sides that are the high density laying in the insulating body of high density electrical connector are provided with metallic conductor, and with several conducting terminals respectively correspondence be assembled in these terminal accommodating conduits, it is characterized in that: this metallic conductor is connected conducting and is in ground state with the grounding path that high density electrical connector is preset, and the minimum distance perseverance of arbitrary conducting terminal and its side metallic conductor is less than the spacing of this terminal and arbitrary adjacent conductive terminal.
2. make high density electrical connector effectively prevent the method for cross-talk phenomenon according to claim 1, it is characterized in that: described metallic conductor is the surface plate lamellar body, and it is located at the same row's conducting terminal side that is the array deploying in the high density electrical connector.
3. make high density electrical connector effectively prevent the method for cross-talk phenomenon according to claim 1, it is characterized in that: described metallic conductor is the annular plate lamellar body, and it is located at around the plurality of conductive terminals that is the array deploying in the high density electrical connector these conducting terminals are surrounded in it in the lump.
4. make high density electrical connector effectively prevent the method for cross-talk phenomenon according to claim 1, it is characterized in that: the cross section of this metallic conductor slightly is star, and its extension is located in the high density electrical connector per four in twos in the middle of the adjacent conductive terminal.
5. high density electrical connector comprises: insulating body, and it is provided with interface and the composition surface relative with this interface, and is provided with several terminal accommodating conduits that are through to the composition surface from interface; Plurality of conductive terminals, correspondence are contained in the terminal accommodating conduit of insulating body and are used for transmitting high-frequency signals, and its part extends near do butt joint the interface usefulness, and another part then passes outside the composition surface electrically to be engaged on the circuit board; Metallic conductor, be located at conducting terminal side appropriate position, it is characterized in that: this metallic conductor is communicated with the grounding path that electric connector is preset and is in ground state, and the minimum distance of this metallic conductor and the arbitrary conducting terminal of its side is less than the spacing between this conducting terminal and the arbitrary adjacent conductive terminal.
6. high density electrical connector as claimed in claim 5 is characterized in that: this insulating body convexes with the docking section towards butt joint direction one side, and described terminal accommodating passage is arranged in this docking section two side walls respectively and extends through to the insulating body composition surface.
7. high density electrical connector as claimed in claim 6 is characterized in that: this metallic conductor comprises two surface plate lamellar bodies, and it is located at respectively in the described docking section near the two side walls place.
8. high density electrical connector as claimed in claim 7 is characterized in that: this metallic conductor has suitable width along conducting terminal length bearing of trend.
9. high density electrical connector as claimed in claim 5, it is characterized in that: form docking groove towards the suitable degree of depth of insulating body internal recess on this insulating body interface, the both sides inwall of this docking groove is placed with several terminal accommodating conduits that is through to the insulating body composition surface certainly.
10. high density electrical connector as claimed in claim 9 is characterized in that: described metallic conductor comprises two surface plate lamellar bodies, and it is located at the terminal accommodating conduit place near this docking groove both sides inwall respectively.
11. high density electrical connector as claimed in claim 5 is characterized in that: the terminal accommodating conduit is many row's arrays and arranges and run through insulating body and correspondence and accommodate plurality of conductive terminals in wherein.
12. high density electrical connector as claimed in claim 11 is characterized in that: this metallic conductor comprises several surface plate lamellar bodies, and its correspondence is arranged between per two row's terminal accommodating conduits and conducting terminal is between row and row isolated.
13. high density electrical connector as claimed in claim 5 is characterized in that: metallic conductor is set to be looped around the frame body around the conducting terminal and all conducting terminals is surrounded wherein in the lump.
14. high density electrical connector as claimed in claim 5 is characterized in that: insulating body is provided with several terminal accommodating conduits that number row is the array high-density arrangement and runs through insulating body.
15. high density electrical connector as claimed in claim 14, it is characterized in that: the cross section of this metallic conductor slightly is star, it is arranged on this electric connector per four in twos in the middle of the adjacent conductive terminal, and the minimum distance of the arbitrary conducting terminal of its side and this metallic conductor is all less than the spacing between the adjacent conductive terminal in twos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991138554A CN1148842C (en) | 1999-07-08 | 1999-07-08 | Method for preventing crosstalk in high density electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991138554A CN1148842C (en) | 1999-07-08 | 1999-07-08 | Method for preventing crosstalk in high density electric connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1280405A CN1280405A (en) | 2001-01-17 |
| CN1148842C true CN1148842C (en) | 2004-05-05 |
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ID=5276999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991138554A Expired - Fee Related CN1148842C (en) | 1999-07-08 | 1999-07-08 | Method for preventing crosstalk in high density electric connector |
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| Country | Link |
|---|---|
| CN (1) | CN1148842C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140438A2 (en) | 2010-05-07 | 2011-11-10 | Amphenol Corporation | High performance cable connector |
| US9831588B2 (en) | 2012-08-22 | 2017-11-28 | Amphenol Corporation | High-frequency electrical connector |
| US9905975B2 (en) | 2014-01-22 | 2018-02-27 | Amphenol Corporation | Very high speed, high density electrical interconnection system with edge to broadside transition |
| CN108701922B (en) | 2015-07-07 | 2020-02-14 | Afci亚洲私人有限公司 | Electrical connector |
| TWI790798B (en) | 2016-08-23 | 2023-01-21 | 美商安芬諾股份有限公司 | Connector configurable for high performance |
| CN208862209U (en) | 2018-09-26 | 2019-05-14 | 安费诺东亚电子科技(深圳)有限公司 | A kind of connector and its pcb board of application |
| WO2021154702A1 (en) | 2020-01-27 | 2021-08-05 | Fci Usa Llc | High speed connector |
| CN115516717A (en) | 2020-01-27 | 2022-12-23 | 富加宜（美国）有限责任公司 | High-speed, high-density direct-matching orthogonal connector |
| CN215816516U (en) | 2020-09-22 | 2022-02-11 | 安费诺商用电子产品(成都)有限公司 | Electrical connector |
| CN213636403U (en) | 2020-09-25 | 2021-07-06 | 安费诺商用电子产品(成都)有限公司 | Electrical connector |
-
1999
- 1999-07-08 CN CNB991138554A patent/CN1148842C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1280405A (en) | 2001-01-17 |
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