CN112117605B - Connector and signal transmission structure thereof - Google Patents
Connector and signal transmission structure thereof Download PDFInfo
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- CN112117605B CN112117605B CN202010871547.4A CN202010871547A CN112117605B CN 112117605 B CN112117605 B CN 112117605B CN 202010871547 A CN202010871547 A CN 202010871547A CN 112117605 B CN112117605 B CN 112117605B
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- signal
- signal pair
- connector
- contact pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention provides a connector and a signal transmission structure thereof. The connector comprises a connector shell, at least one signal pair unit is installed in the connector shell, the signal pair unit comprises a signal pair formed by two signal contact pieces arranged at intervals, the periphery of the signal pair formed by the two signal contact pieces is provided with a set polygonal area, and the signal pair unit further comprises grounding contact pieces which are arranged at each angular position of the polygonal area and enclose the signal pair inside. The signal pairs contained in the signal pair units of the connector are enclosed by the grounding contact pieces in the polygonal area, so that the grounding contact pieces can well shield the signal pairs, the signal crosstalk between two adjacent signal pairs is avoided, the signal crosstalk of the connector is greatly reduced, and the signal transmission quality is ensured.
Description
The application is a divisional application of the following applications, the application date of the original application: 29/09/2017, application number of original application: 201710912372.5, title of original application: a connector and a signal transmission structure thereof.
Technical Field
The invention relates to a connector and a signal transmission structure thereof.
Background
Crosstalk refers to undesirable voltage noise interference on adjacent transmission lines due to electromagnetic coupling as a signal propagates on the transmission lines. Signals are transmitted in transmission lines in the form of electromagnetic waves, which include time-varying electric and magnetic fields that produce induced voltages and currents in surrounding transmission lines. While voltage and current are direct causes of crosstalk performance in the transmission line that receives the interference.
Crosstalk is another important factor affecting the transmission performance of products, and reducing crosstalk has been an important direction in the design of high-speed connectors, and in some cases, the importance of high-speed performance transmission even exceeds the characteristic impedance. Especially, in the case that the characteristic impedance is easy to guarantee, the transmission performance design of the high-speed connector is largely the design of the crosstalk resistance of the connector.
Excessive crosstalk can have two detrimental effects: firstly, crosstalk can change the effective characteristic impedance and transmission speed of a transmission line, and influence the integrity of system signals, so that the transmission performance of the transmission line is changed; second, crosstalk can introduce inductive noise on other transmission lines, further degrading signal integrity and reducing noise margin.
There are three conventional ways to control or eliminate crosstalk.
One is to increase the distance between the signal paths. When a signal is transmitted, alternating magnetic and electric fields are generated between the signal path and the return path. These fields are not confined to a narrow region between the signal path and the return path, but extend throughout the space, these extended fields being commonly referred to as fringing fields. If the distance between the signal paths is increased to make the wires far away from the fringe field, the noise caused by crosstalk can be fundamentally removed. Therefore, this method is theoretically the most effective method for controlling crosstalk. However, as modern data transmission speed and system throughput are increased, the density of signal transmission loops required to be arranged in a unit area is often high, the required signal path density and the limited area conflict, and in many cases, the signal lines are close to each other and crosstalk is difficult to avoid.
Secondly, a unique shielding structure is adopted. For example, patent No. US200623561 discloses a high-speed connector in which differential signal pairs are arranged in a matrix form, a ground signal is provided between two adjacent differential pairs vertically arranged in a row, and the signal pairs in two adjacent rows are staggered in a vertical direction, i.e., a column direction. Although two adjacent signal pairs in the same column of such a high-speed connector are separated by a ground signal to shield the two adjacent signal pairs, signal crosstalk also occurs between two signal pairs in two adjacent columns that are closer to each other, and signal transmission of the high-speed connector is also affected when the signal density is high.
Disclosure of Invention
The invention aims to provide a connector with low signal crosstalk and a signal transmission structure suitable for the connector.
In order to achieve the above object, the connector of the present invention according to claim 1 is: a connector comprises a connector shell, wherein at least one signal pair unit is installed in the connector shell, the signal pair unit comprises a signal pair consisting of two signal contacts arranged at intervals, the periphery of the signal pair consisting of the two signal contacts is provided with a set polygonal area, and the signal pair unit further comprises a grounding contact arranged at each angular position of the polygonal area to enclose the signal pair inside.
The signal pairs contained in the signal pair units of the connector are enclosed by the grounding contact pieces in the polygonal area, so that the grounding contact pieces can well shield the signal pairs, the signal crosstalk between two adjacent signal pairs is avoided, the signal crosstalk of the connector is greatly reduced, and the signal transmission quality is ensured.
On the basis of the technical scheme 1, a technical scheme 2 is further defined, namely, a polygonal area surrounded by the grounding contact pieces is a triangular area.
In addition to claim 1, it is further limited to claim 3, that is, the area surrounded by the ground contact is a quadrilateral area.
On the basis of claim 3, a further limitation is made to claim 4, that is, the signal pair is located at the center of the quadrilateral region surrounded by the ground contacts. Therefore, the shielding effect of the grounding contact of the signal pair unit is relatively balanced, and when a plurality of signal pair units are arranged in the connector, the fringe field of each signal pair in the connector can be shielded well.
In addition to claim 4, claim 5 can be obtained by further limiting, that is, the set quadrangular region is a parallelogram region. The grounding contact piece is enclosed into a parallelogram area, so that the consistency of the arrangement form of the grounding contact piece and the signal pair is improved, and a plurality of signal pair units are conveniently arranged in the connector.
In addition to the technical solution 5, the technical solution 6 can be further defined, that is, the set quadrangle is a rectangle, so that the structure can be more compact when a plurality of signal pair units are arranged.
On the basis of the technical scheme 6, a technical scheme 7 can be obtained by further optimizing that the length direction of the rectangular area is consistent with the parallel direction of the two signal contact pieces of the signal pair, so that the grounding contact piece is arranged to be matched with fringe fields generated by the two signal contact pieces of the signal pair, and the shielding effect is improved.
Of course, in addition to claim 4, claim 8 can be obtained by further limiting, that is, the set quadrilateral area is an isosceles trapezoid. An isosceles trapezoid is a quadrilateral with a relatively regular shape, and can also be applied to a case where there are a plurality of signal pair units.
Further, on the basis of claim 8, it is possible to further optimize to obtain claim 9, that is, two parallel sides of the isosceles trapezoid surrounded by the ground contacts are parallel to the connection line of the two signal contacts of the differential pair.
On above-mentioned various technical scheme's basis, can further inject and obtain technical scheme 10, promptly the signal of installation in the connector housing has a plurality ofly to the unit, and is the matrix and arranges, and matrix arrangement structure is regular, and the tetragonal signal of being convenient for moreover arranges integrating of unit, under the prerequisite that the assurance has lower crosstalk, has improved signal transmission density.
The technical scheme 1 of the signal transmission structure of the invention is as follows: a signal transmission structure comprises at least one signal pair unit, wherein the signal pair unit comprises a signal pair consisting of two signal contacts arranged at intervals, the periphery of the signal pair consisting of the two signal contacts is provided with a set polygonal area, and the signal pair unit further comprises a grounding contact which is arranged at each angular position of the polygonal area and surrounds the signal pair inside.
The signal pairs contained in the signal pair units of the connector are enclosed by the grounding contact pieces in the polygonal area, so that the grounding contact pieces can well shield the signal pairs, the signal crosstalk between two adjacent signal pairs is avoided, the signal crosstalk of the connector is greatly reduced, and the signal transmission quality is ensured.
On the basis of the technical scheme 1, a technical scheme 2 is further defined, namely, a polygonal area surrounded by the grounding contact pieces is a triangular area.
In addition to claim 1, it is further limited to claim 3, that is, the area surrounded by the ground contact is a quadrilateral area.
On the basis of claim 3, a further limitation is made to claim 4, that is, the signal pair is located at the center of the quadrilateral region surrounded by the ground contacts. Therefore, the shielding effect of the grounding contact of the signal pair unit is relatively balanced, and when a plurality of signal pair units are arranged in the connector, the fringe field of each signal pair in the connector can be shielded well.
In addition to claim 4, claim 5 can be obtained by further limiting, that is, the set quadrangular region is a parallelogram region. The grounding contact piece is enclosed into a parallelogram area, so that the consistency of the arrangement form of the grounding contact piece and the signal pair is improved, and a plurality of signal pair units are conveniently arranged in the connector.
In addition to the technical solution 5, the technical solution 6 can be further defined, that is, the set quadrangle is a rectangle, so that the structure can be more compact when a plurality of signal pair units are arranged.
On the basis of the technical scheme 6, a technical scheme 7 can be obtained by further optimizing that the length direction of the rectangular area is consistent with the parallel direction of the two signal contact pieces of the signal pair, so that the grounding contact piece is arranged to be matched with fringe fields generated by the two signal contact pieces of the signal pair, and the shielding effect is improved.
Of course, in addition to claim 4, claim 8 can be obtained by further limiting, that is, the set quadrilateral area is an isosceles trapezoid. An isosceles trapezoid is a quadrilateral with a relatively regular shape, and can also be applied to a case where there are a plurality of signal pair units.
Further, on the basis of claim 8, it is possible to further optimize to obtain claim 9, that is, two parallel sides of the isosceles trapezoid surrounded by the ground contacts are parallel to the connection line of the two signal contacts of the differential pair.
On above-mentioned various technical scheme's basis, can further inject and obtain technical scheme 10, promptly the signal of installation in the connector housing has a plurality ofly to the unit, and is the matrix and arranges, and matrix arrangement structure is regular, and the tetragonal signal of being convenient for moreover arranges integrating of unit, under the prerequisite that the assurance has lower crosstalk, has improved signal transmission density.
Drawings
FIG. 1 is a schematic diagram of a signal pair unit in a first embodiment of the connector of the present invention;
FIG. 2 is a diagram illustrating a signal transmission structure in a first embodiment of the connector according to the present invention;
FIG. 3 is a schematic diagram of a signal pair unit in a second embodiment of the connector of the present invention;
fig. 4 is a schematic diagram of a signal transmission structure in a second embodiment of the connector of the present invention;
FIG. 5 is a schematic diagram of a signal pair unit in a third embodiment of the connector of the present invention;
fig. 6 is a schematic diagram of a signal transmission structure in a fourth embodiment of the connector of the present invention;
fig. 7 is a schematic diagram of a signal transmission structure in a fifth embodiment of the connector according to the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The first specific embodiment of the connector of the present invention specifically refers to a differential connector, but of course, in other embodiments, the connector is not limited to a differential connector. The connector of the present invention comprises a connector housing, an insulator is provided in the connector housing, and a signal pair unit 3 is installed in the insulator, as shown in fig. 1; the plurality of signal pair units 3 are arranged according to a certain rule to form a signal transmission structure, as shown in fig. 2.
The signal pair unit 3 includes a signal pair composed of two signal contacts 1 arranged at intervals, and the periphery of the signal pair has a set quadrilateral area, which is defined for convenience of description, and is a virtual spatial area. The signal pair unit 3 further includes four ground contacts 2 corresponding to four corner positions of the quadrilateral area, and the quadrilateral area surrounded by the four ground contacts encloses the signal pair therein. It should be noted that the meaning of "inside" is more likely that the signal contact cannot be located on the line connecting two adjacent ground contacts, or at least one signal contact cannot be located on the line connecting two adjacent ground contacts. More preferably, the signal pair is arranged at the center of the quadrilateral region, so that the shielding effect of the four grounding contacts can be maximized under the condition that the area of the quadrilateral region is constant, and the shielding effects of the four grounding contacts are relatively balanced.
The four ground contacts may enclose a quadrilateral of various shapes, such as an irregular arbitrary quadrilateral, a parallelogram, or several special cases of parallelograms: diamond, rectangular, isosceles trapezoid, etc. Since a plurality of signal pair units are generally installed in the connector, in order to facilitate the arrangement of the plurality of signal pair units and improve the signal transmission density, the quadrangle surrounded by the four ground contacts is preferably a quadrangle with a regular shape. For a pair of signal pairs, the signal from the direction of the signal-to-center line interferes with the signal transmission more than the signal perpendicular to the direction of the signal-to-center line, so in this embodiment, the quadrangle formed by the four ground contacts is a rectangle with unequal length and width, and the length direction of the rectangle is consistent with the parallel direction of the two signal contacts of the signal pair.
Of course, in the second embodiment, as shown in fig. 3, the quadrangle surrounded by the four ground contacts is an isosceles trapezoid, so when such signal pair units are densely arranged in the connector, a matrix arrangement may be adopted, and the structure is as shown in fig. 4, two adjacent signal pair units in the same vertical column may be transversely and oppositely arranged, that is, the inclined planes of the isosceles trapezoids surrounded by the ground contacts of the two signal pair units are parallel to each other, the signal pair units in the adjacent vertical columns are arranged in parallel, and the long sides and the short sides of the isosceles trapezoids surrounded by the two signal pair units are close to each other; or in other embodiments, the long sides and the long sides of the isosceles trapezoids enclosed by the signal pair units in adjacent vertical columns are close, and the short sides are close.
Or in the third embodiment, as shown in fig. 5, the quadrangle surrounded by four ground contacts is a parallelogram, so when the signal pair units are densely arranged in the connector, a matrix arrangement may be adopted, and adjacent sides of the quadrangle surrounded by the ground contacts of two adjacent signal pair units in the same vertical column are parallel, and adjacent sides of the quadrangle surrounded by the ground contacts of two adjacent signal pair units in the same horizontal row are also parallel.
The invention also provides a fourth specific embodiment of the connector, as shown in fig. 6, the signal pair unit includes three ground contacts 2, the three ground contacts 2 enclose a triangular area, and the signal pair formed by the signal contacts 1 is located in the triangular area. The signal pair units are arranged in an array mode, and the directions of every two adjacent signal pair units are arranged in the opposite direction in the longitudinal direction.
The invention also provides a fifth specific embodiment of the connector, as shown in fig. 7, the signal pair unit includes six ground contacts, six ground contacts 2 enclose a hexagonal area, and the signal pair formed by the signal contacts 1 is located in the hexagonal area. The signal pair units are arranged in rows transversely, and are provided with a plurality of rows in the longitudinal direction, and the adjacent two rows are staggered in the longitudinal direction.
The above-mentioned first, fourth and fifth embodiments provide three, four and six ground contacts, respectively, and in other embodiments, five or seven ground contacts of the signal pair unit may be provided, which are not specifically listed here.
In some of the above embodiments, the signal pair units in the connector are arranged in a county matrix, but in other embodiments, it is not excluded that the signal pairs in two adjacent vertical rows are staggered in the vertical direction and the signal pairs in two adjacent horizontal rows are staggered in the horizontal direction.
In the above embodiments, the signal transmission structure includes a plurality of signal pair units, and the present invention does not exclude an embodiment in which the signal transmission structure includes only one or two signal pair units.
The specific structure of the embodiment of the signal transmission structure of the present invention is the same as the structure of the signal transmission structure included in the connector, and is not described herein again.
Claims (4)
1. The connector is characterized in that at least one signal pair unit is installed in the connector shell and comprises a signal pair consisting of two signal contact pieces arranged at intervals, a set polygonal area is arranged on the periphery of the signal pair consisting of the two signal contact pieces, the signal pair unit further comprises grounding contact pieces which are arranged at each angular position of the polygonal area and used for surrounding the signal pair in the triangular area, the polygonal area surrounded by the grounding contact pieces is a triangular area, and the signal pair is positioned on one side of a connecting line of the two adjacent grounding contact pieces, which faces the triangular area.
2. The connector of claim 1, wherein a plurality of signal pair units are mounted in the connector housing in a matrix arrangement.
3. A signal transmission structure is characterized by comprising at least one signal pair unit, wherein the signal pair unit comprises a signal pair consisting of two signal contact pieces arranged at intervals, a set polygonal area is arranged on the periphery of the signal pair consisting of the two signal contact pieces, the signal pair unit further comprises grounding contact pieces which are arranged at each angular position of the polygonal area and surround the signal pair in the polygonal area, the polygonal area surrounded by the grounding contact pieces is a triangular area, and the signal pair is positioned on one side of a connecting line of the two adjacent grounding contact pieces, which faces the triangular area.
4. The signal transmission structure according to claim 3, wherein the signal pair units are plural and arranged in a matrix form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010871547.4A CN112117605B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010871547.4A CN112117605B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
| CN201710912372.5A CN109586107B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710912372.5A Division CN109586107B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112117605A CN112117605A (en) | 2020-12-22 |
| CN112117605B true CN112117605B (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710912372.5A Active CN109586107B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
| CN202010871547.4A Active CN112117605B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710912372.5A Active CN109586107B (en) | 2017-09-29 | 2017-09-29 | Connector and signal transmission structure thereof |
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| Country | Link |
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| CN (2) | CN109586107B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112594A (en) * | 2019-05-08 | 2019-08-09 | 苏州浪潮智能科技有限公司 | A kind of high-speed signal connector, server system and server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101536259A (en) * | 2006-10-30 | 2009-09-16 | Fci公司 | Broadside-coupled signal pair configurations for electrical connectors |
| CN201467560U (en) * | 2009-06-05 | 2010-05-12 | 中航光电科技股份有限公司 | Circuit board with difference signal connector |
| CN104969422A (en) * | 2013-01-24 | 2015-10-07 | 富加宜（亚洲）私人有限公司 | Connector assembly |
| CN105932486A (en) * | 2016-06-23 | 2016-09-07 | 中航光电科技股份有限公司 | Signal transmission structure and connector employing same |
| CN109327955A (en) * | 2013-01-29 | 2019-02-12 | 安费诺富加宜（亚洲）私人有限公司 | PCB with offset difference signal access |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6350134B1 (en) * | 2000-07-25 | 2002-02-26 | Tyco Electronics Corporation | Electrical connector having triad contact groups arranged in an alternating inverted sequence |
| US6743049B2 (en) * | 2002-06-24 | 2004-06-01 | Advanced Interconnections Corporation | High speed, high density interconnection device |
| US8251745B2 (en) * | 2007-11-07 | 2012-08-28 | Fci Americas Technology Llc | Electrical connector system with orthogonal contact tails |
| US9490586B1 (en) * | 2015-04-22 | 2016-11-08 | Tyco Electronics Corporation | Electrical connector having a ground shield |
| CN106207546A (en) * | 2016-06-23 | 2016-12-07 | 中航光电科技股份有限公司 | A kind of signal mode and use the adapter of this signal mode |
-
2017
- 2017-09-29 CN CN201710912372.5A patent/CN109586107B/en active Active
- 2017-09-29 CN CN202010871547.4A patent/CN112117605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101536259A (en) * | 2006-10-30 | 2009-09-16 | Fci公司 | Broadside-coupled signal pair configurations for electrical connectors |
| CN201467560U (en) * | 2009-06-05 | 2010-05-12 | 中航光电科技股份有限公司 | Circuit board with difference signal connector |
| CN104969422A (en) * | 2013-01-24 | 2015-10-07 | 富加宜（亚洲）私人有限公司 | Connector assembly |
| CN109327955A (en) * | 2013-01-29 | 2019-02-12 | 安费诺富加宜（亚洲）私人有限公司 | PCB with offset difference signal access |
| CN105932486A (en) * | 2016-06-23 | 2016-09-07 | 中航光电科技股份有限公司 | Signal transmission structure and connector employing same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112117605A (en) | 2020-12-22 |
| CN109586107A (en) | 2019-04-05 |
| CN109586107B (en) | 2020-09-18 |
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