CN105207012A - Electrical connector having common ground shield - Google Patents

Electrical connector having common ground shield Download PDF

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Publication number
CN105207012A
CN105207012A CN201510566837.7A CN201510566837A CN105207012A CN 105207012 A CN105207012 A CN 105207012A CN 201510566837 A CN201510566837 A CN 201510566837A CN 105207012 A CN105207012 A CN 105207012A
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China
Prior art keywords
signal
lead frame
contact
electric connector
along
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CN201510566837.7A
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CN105207012B (en
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J·E·巴克
S·B·史密斯
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FCI SA
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Framatome Connectors International SAS
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Abstract

An electrical connector assembly includes a first electrical connector and a second electrical connector that can be matched to establish an electrical connection across the electrical connectors at a matching region. One of the electrical connectors includes a perforated common ground shield at the matching region that reduces crosstalk while substantially matching impedance at the matching region to a desired impedance of the electrical connector assembly.

Description

There is the electric connector of common ground shielding
The divisional application that the application is the applying date is on February 16th, 2002, application number is 201210037448.1, denomination of invention is the application for a patent for invention of " electric connector with common ground shielding ".
The cross reference of related application
This application claims the U.S. Patent Application Serial No.61/444 submitted on February 18th, 2011, the rights and interests of 344, here it is openly incorporated to way of reference by entirety.
Technical background
Typically, electric connector multiple electrical contacts of comprising connector shell and being supported by connector shell.Electrical contact can comprise separately one or more signal contact or be combined with one or more grounding contact.Signal contact can be provided as single ended contacts maybe can be provided as Difference signal pair.Electrical contact limits and is positioned at the abutting end at the mating interface place of electric connector, and is positioned at the contrary installation end at mounting interface place of electric connector.Abutting end is configured to coordinate with the complementary fit end of the corresponding electrical contact of electric device, and described electric device can be another electric connector or optional electric installation, and installation end can be configured to be connected to substrate, such as printed circuit board (PCB).
Some traditional electric connector comprises multiple adjacent lead frame assembly, such as inlaying moulded lead frame assembly (IMLA), and each lead frame assembly comprises the Overmolded lead frame housing to the dielectric on multiple electrical contact.Lead frame assembly can be supported in connector shell, so that electrical contact limits the ideal array of signal contact and grounding contact.Adversely, signal contact can be obtained very near by interval, so that between adjacent signal contact, undesirable interference occurs, or " crosstalk ".There is crosstalk when inducing electrical interference in adjacent signal contact due to the signal in existence signal contact of electric interfering field, therefore jeopardize signal integrity.Crosstalk also can occur between Difference signal pair, and increases along with the reduction of the spacing of interference signal contact.By being separated adjacent signal contact or adjacent Difference signal pair with grounding contact and reducing crosstalk.
Traditionally, metal crosstalk shields has been added to electric connector for reducing crosstalk further.Such as, the external plates of crosstalk shields form can be placed between adjacent lead frame assembly.In some instances, known use conductive earthing short board makes each grounding contact be in same potential, and the front surface that described circuit board is arranged at connector shell is electrically connected to one or more, until all, grounding contact, and with signal contact electric insulation.
Summary of the invention
According to an embodiment, common ground shielding is configured to the mating interface place being arranged at electric connector at least in part.Common ground shielding comprises the shielding body of substantitally planar, and described shielding body is configured at one end with substrate electric connection and at the second end and complementary ground component electric connection.Common ground shielding limit multiple opening extending through body, with reduce crosstalk and with expection impedance level substantial match.
Accompanying drawing explanation
The detailed description of preferred embodiment of foregoing general description and the application will be understood better when reading by reference to the accompanying drawings.For illustrating embodiment of the present disclosure, shown in the drawings of preferred embodiment.But the disclosure should be understood and be not restricted to shown accurate configuration and structure.In accompanying drawing:
Fig. 1 is the perspective view comprising the electric coupler component of vertical pin connector and right-angle receptacle connector according to an embodiment;
Fig. 2 A is the perspective view of the common ground shielding according to an embodiment structure;
Fig. 2 B is the enlarged perspective of a part for the electric coupler component shown in Fig. 1, illustrate that common ground shielding is attached to right-angle receptacle connector, and vertically the connector shell of pin connector has been removed;
Fig. 2 C is the schematic side elevation of the electric coupler component shown in Fig. 1, and housing is illustrated as the transparent common ground shielding being arranged at the mating interface place of vertical pin connector and right-angle receptacle connector with display;
Fig. 2 D is the profile of the electric coupler component 2D-2D along the line shown in Fig. 2 C;
Fig. 2 E is the amplifier section of the profile of the electric coupler component 2E along the line shown in Fig. 2 D;
Fig. 3 A is the perspective view of the common ground shielding being similar to the common ground shielding shown in Fig. 2 B, but constructs according to embodiment;
Fig. 3 B is the perspective view of the electric coupler component shown in Fig. 1, but comprises the earth shield shown in Fig. 3 A;
Fig. 3 C is the profile of the electric coupler component 3C-3C along the line shown in Fig. 3 B;
Fig. 3 D is the amplifier section of the profile of the electric coupler component 3D along the line shown in Fig. 3 C;
Fig. 4 A is the perspective view of one of them of more than first lead frame assembly of the right angle electric connector shown in Fig. 1;
Fig. 4 B is another perspective view of the lead frame assembly shown in Fig. 4 A, the multiple signal electrical contacts showing ground plate and carried by lead frame housing;
Fig. 4 C is another perspective view of the lead frame assembly shown in Fig. 4 A, shows ground plate and multiple signal electrical contact;
Fig. 4 D is the perspective view of the ground plate of the lead frame assembly shown in Fig. 4 C;
Fig. 4 E is the enlarged perspective of a part for the abutting end of the lead frame assembly shown in Fig. 4 B;
Fig. 4 F is the perspective view of the signal electrical contact of the lead frame assembly shown in Fig. 4 A, and signal electrical contact is set to by lead frame housings support.
Embodiment
First with reference to figure 1, electric coupler component 20 comprises the first electric connector 22 and the second electric connector 24, and the first and second complementary electrical elements, such as, be first substrate 26 and second substrate 28 respectively.First electric connector 22 is configured to be installed to first substrate 26, and the second electric connector 24 is configured to be installed to second substrate 28.First and second electric connectors 22 and 24 are configured to be fitted to each other to set up electrical connection between the first and second substrates 26 and 28.According to illustrated embodiment, substrate 26 and 28 can be configured to printed circuit board (PCB) (PCB) respectively.
Connector shell 31 that is that first electric connector 22 comprises dielectric or electric insulation and the multiple electrical contacts 33 supported by connector shell 31.Electrical contact 33 can comprise multiple signal electrical contact 35, multiple signal electrical contact 35 can form by lead frame housing is inlaying moulded before lead frame housing is attached to connector shell 31, be sewn onto before lead frame housing is attached to connector shell 31 in lead frame housing, form by connector shell 31 is inlaying moulded, be sewn onto in connector shell 31, or otherwise supported by connector shell 31.Signal electrical contact 35 limits the corresponding abutting end 38 (with reference to figure 2C) that the mating interface 30 along the first electric connector 22 extends, along the installation end 40 that the mounting interface 32 of the first electric connector 22 extends, and body 39 (with reference to figure 2C), body 39 generally along between abutting end 38 and installation end 40 first or longitudinal L extend.First electric connector 22 is configured to coordinate with the second electric connector 24 at mating interface 30, to make the complementary electrical contacts mates of electrical contact 33 and the second electric connector 24.Longitudinal L can limit longitudinal forward direction and also can be referred to as and inserts or coordinate direction, when in the first and second electric connectors 22 and 24 or both moved towards another in the direction of mating time, the first and second electric connectors 22 are together with 24 can be engaged in.First electric connector 22 is configured to be installed to complementary electrical element at mounting interface 32 place, such as first substrate 26 in addition, so that electrical contact 33 is installed to the electric mark of first substrate 26, first substrate 26 can be configured to backboard, intermediate plate, subcard or similar device.Such as, installation end 40 can be press-fit tail end, and tail end or fusible element such as tin ball are installed in surface.
The first and second edges that each signal electrical contact 35 can limit corresponding first and second contrary broadsides and connect between broadside.The edge limited length of side direction A along being generally perpendicular to longitudinal L, and broadside limits the length along the horizontal T being generally perpendicular to side direction A and longitudinal L.The length at edge is less than the length of broadside, thus signal electrical contact 35 limits rectangular cross section.At least one pair of or multipair adjacent signal electrical contact 35 can be configured to Difference signal pair 45, and Difference signal pair 45 is arranged to the multiple row CL extended along the horizontal T that can limit column direction, and is spaced along the side direction A that can limit line direction.According to an embodiment, Difference signal pair 45 is edge couplings, namely specifies the edge of each electrical contact of Difference signal pair 45 facing with each other along a common column in row CL.Therefore, electric connector 22 can comprise the multiple Difference signal pairs arranging setting along the appointment one in row CL.As shown in the figure, electric connector 22 can comprise four Difference signal pairs 45, they are by along each row CL edge-p-edge local, but electric connector 22 can comprise the Difference signal pair arranging any number arranged along the appointment one in row CL as required, such as two is right, three pairs, four is right, and five is right, six pairs, or more Difference signal pair.First electric connector 22 can comprise the row CL of any number as required.
As shown in the figure, longitudinal L and side direction A horizontal-extending, and horizontal T vertically extends, and can change although should understand in use these directions according to the orientation of such as electric connector 24.Unless specifically indicated herein, term " side direction ", " longitudinal direction " and " transverse direction " are used to the vertical direction component describing each element.Finger is respectively used to along towards the direction with the durection component away from central equipment relative to the term " inner side " of particular orientation component and " inner " and " outside " and " outside " here about designated equipment.
With reference now to Fig. 1-2 E, first electric connector 22 can comprise common ground shielding 100 such as multiple common ground shielding 100 of at least one conduction further, and common ground shielding 100 is configured to coordinate to the corresponding earthing component 59 of the second connector 24 when the first and second electric connectors 22 and 24 match.Therefore, earthing component 59 is configured to shield 100 with common ground and coordinates, and is configured to be installed to second substrate 28, will describe in detail below.Common ground shielding 100 can be formed by any suitable electric conducting material, such as metal or conductive lossy material.As understood from the following description, common ground shielding 100 can set up ground connection electrical connection between the first and second electric connectors 22 and 24 matched.
Common ground shielding 100 can be arranged on mating interface 30 place, and comprise shielding body 102 with holes, shielding body 102 when being connected device housing 31 and supporting along the plane limited by longitudinal L and horizontal T can be substantitally planar, and be biased relative to the respective column CL limited by signal electrical contact 35, to make shielding body 102 not Contacting signal probe 35.First electric connector 22 comprises from shielding body 102 along the outward extending multiple ground connection installation end 104 of first direction.Ground connection installation end 104 can be integrated with shielding body 102 or can be separated with shielding body 102, the second end electric connection of ground connection installation end 104 and shielding body 102 when being supported by connector shell 31 with box lunch shielding body 102.Ground connection installation end 104 can with the installation end 40 of signal electrical contact 35 along common column CL aligned in general, and can be press-fit tail end, tail end is installed on surface, or fusible element such as tin ball, and ground connection installation end 104 is configured to be electrically connected to complementary electrical element such as first substrate 26.
It is adjacent or be arranged between described a pair installation end 40 that common ground shielding 100 can support to make ground connection installation end 104 to be configured to a pair installation end 40 along horizontal T and adjacent signal electrical contact 35 by connector shell 31.Such as, the ground connection installation end 104 of common ground shielding 100 and the installation end 40 of signal contact 35 can by the mounting interface 32 along electric connector 22 along common column CL spaced at equal intervals.According to an embodiment, ground connection installation end 104 can be arranged at limit along the signal contact 35 of the adjacent Difference signal pair 45 at common column CL interval installation end 40 between.Therefore, configure according to contact, first electric connector 22 can limit the G-S-S pattern of repetition, wherein " G " represents a ground connection installation end 104 of common ground shielding 100, and " S " represents an installation end 40 of signal electrical contact 35, wherein, two in the G-S-S of repetition adjacent " S " can represent the installation end 40 of the signal contact 35 of Difference signal pair 45.The first row should understood in row CL can limit the first contact configuration from the top of row CL to the G-S-S of the repetition of the bottom of row CL, and can limit with the secondary series in the adjacent row CL of first row in row CL and be different from the second contact that the first contact configures and configure.Such as, the second contact configuration can limit the S-S-G of top to the repetition of the bottom of row CL from arranging CL.Like this, laterally A row CL can limit the first and second contacts configuration (and laterally A, across the second electric connector 24, should understand from detailed description below) of the repetition across the first electric connector 22.Alternatively, the second contact configuration can configure identical with the first contact.
First electric connector 22 also comprises multiple ground connection abutting end 106, and ground connection abutting end 106 stretches out from shielding body 102 along second direction, and second direction and ground connection installation end 104 are contrary from shielding the first direction that body 102 extends.Ground connection abutting end 106 can be integrated or can be separated from shield body 102 with shielding body 102, with the ground connection abutting end 106 when shielding body 102 is supported by connector shell 31 and the second end electric connection shielding body 102.Ground connection abutting end 106 with the abutting end 38 of signal electrical contact 35 along common column CL aligned in general, and can be configured to the complementary fit end being electrically connected to the earthing component 59 of the second electric connector 24 when the first and second electric connectors 22 and 24 match.
Ground connection abutting end 106 can L and ground connection installation end 104 conllinear substantially along the longitudinal, with the ground connection installation end 104 making the line that L extends along the longitudinal can be passed through a ground connection abutting end 106 and aim at.Ground connection abutting end 106 is arranged between a pair abutting end 38 along the signal contact 35 of horizontal T.Ground connection abutting end 106 can be aimed at along horizontal T with the abutting end 38 of signal contact 35, with the abutting end 38 making the line extended along horizontal T can be passed through ground connection abutting end 106 and signal contact 35.Similarly, ground connection installation end 104 can be aimed at along horizontal T with the installation end 40 of signal contact 35, with the installation end 40 making the line extended along horizontal T can be passed through ground connection installation end 104 and signal contact 35.Ground connection abutting end 106 and abutting end 38 can mating interface 30 equi-spaced apart along common column CL along electric connector 22.Correspondingly, ground connection abutting end 106 can be arranged between adjacent Difference signal pair 45 along common column CL.As described in more detail below, each ground connection abutting end 106 can be limited by respective rib 124, and rib 124 is from shielding body 102 towards the outside projection of corresponding common column CL of the signal contact 35 aimed to ground connection installation end 104 and ground connection abutting end 106.
Shielding body 102 can about corresponding common column CL, laterally A be biased at least in part.Such as, shielding body 102 plane that can generally along about corresponding common column CL Strategic Lateral Offset extends, and therefore by relative to signal electrical contact 35 and ground connection installation end 104 Strategic Lateral Offset.According to illustrated embodiment, shielding body 102 comprises at least one the first noumenon component such as multiple the first noumenon component, and the first noumenon component can be configured to the first beam 108, and beam 108 can extend along the first direction that can limit longitudinal L.Thus each first beam 108 can extend by L along the longitudinal between ground connection installation end 104 and ground connection abutting end 106.
First beam 108 can limit such as along the contrary transverse edge 112 at horizontal T interval.Thus, each first beam 108 can limit the first size or width W 1 that extend between outer lateral edges 112 along horizontal T.The first adjacent beam 108 can be spaced apart the first distance D1 along second direction, and described second direction can such as, about first direction angle offset, less perpendicular.According to illustrated embodiment, second direction can limit horizontal T.Such as, second distance D2 can be defined between the adjacent transverse edge 112 of the first adjacent beam 108.To should be appreciated that when the first width W 1 increases first can correspondingly reduce apart from D1, and first can correspondingly to increase apart from D1 when the first width W 1 reduces.First beam 108 can with corresponding ground connection installation end 104 and the longitudinal conllinear of ground connection abutting end 106, and therefore equidistantly can be arranged between adjacent signal electrical contact 35, and be arranged to adjacent with Difference signal pair 45 particularly and be arranged between Difference signal pair 45.According to illustrated embodiment, between the body 39 that the first beam 108 is arranged at signal electrical contact 35 and it is adjacent.Common ground shielding 100 limits such as multiple holes 110, at least one hole 110, hole 110 in a position laterally A extend through shielding body 102, described position along horizontal T and the first adjacent beam 108 spaced apart and between them.Thus, one or more hole 110 is until institute porose 110 can extend on horizontal T along second distance D2.
Shielding body 102 also can comprise at least one second body member such as multiple second body member, and the second body member can be configured to the second beam 114, second beam 114 along the second direction that can be parallel to first direction, such as, generally along horizontal T, extends.Particularly, the second beam 114 can extend between the first adjacent beam 108 along horizontal T.One or more second beam 114 is until all second beams 114 can connect and be connected to the first adjacent beam 108 between the first adjacent beam 108.According to illustrated embodiment, second beam 114 can with the first beam 108 general coplanar and can extending between reply mutually at one or more until all the first adjacent beam 108, and can connecting between reply mutually at one or more until all the first adjacent beam 108.Thus, the second beam 114 can about signal contact 35 at horizontal T upper offset, so that along the line of horizontal expansion without the second beam 114 and signal contact 35.Similarly, the first beam 108 can about signal contact 35 at horizontal T upper offset, so that along the line of horizontal expansion without the first beam 108 and and signal contact 35.In addition, each second beam 114 extended between the phase adjacency pair of the first beam 108 can along horizontal T aligned in general.Similarly, each first beam 108 can along horizontal T aligned in general.Although should also be clear that and be connected between the first adjacent beam 108 according to each second beam 114 of illustrated embodiment, but the second beam 114 can also be continuous print across the first beam 108, thus one or more, until all, extend between first beam 108 and pass one or more, until all, the first beam 108.
Second beam 114 can generally along longitudinal L interval hole 110 to be divided at least one opening such as multiple first opening 110a, the second opening 110b, and the 3rd opening 110c.Therefore, the second beam 114 also can be called as separation beam.Should be appreciated that shielding body 102 can limit multiple second beams 114 between the first adjacent beam 108 as required, to limit multiple respective openings as required.According to illustrated embodiment, first opening 110a can limit the first outside opening of the forefront being positioned at L along the longitudinal, second opening 110b can limit the second outside opening of the rearmost being positioned at L along the longitudinal, and the 3rd opening 110c limits middle opening, and middle opening is arranged between first and second opening 110a and 110b of L along the longitudinal.As required, shield body 102 and can be defined as the 3rd opening 110c be arranged between the first and second opening 110a and 110b.One or more opening 110a-c is until all opening 110a-c can the laterally overlapping corresponding signal electrical contact 35 of A, as shown in the figure, so that the line that laterally A extends can be passed through corresponding one in a corresponding signal contact and opening 110a-c.In addition, the more selected of the second beam 114 can across the reply mutually of signal contact 35, described signal contact 35 tackle mutually selected by the second beam 114 those start to extend that to the first beam 108 between extend.Second beam 114 can by and signal contact 35 laterally A interval to make the second beam 114 and signal contact 35 electric insulation.
At least one or more opening 110a-c is until all opening 110a-c limit by the periphery closed, and described closed periphery comprises a pair second beams 114 and a pair first beams 108 at least partially.Second beam 114 can limit such as the contrary external margin 116 at L interval along the longitudinal, thus limit the second size or width W 2, second size or width W 2 be defined at least one second beam 114 by L along the longitudinal until all second beams 114 external margin 116 between.Shielding body 102 limits second distance D2, and second distance D2 is limited between the adjacent external margin 116 of the second adjacent beam 114 along the longitudinal.Should be appreciated that second distance D2 can correspondingly reduce when the second width W 2 increases, and second distance D2 correspondingly can increase when the second width W 2 reduces.Should be appreciated that second distance D2 limits each opening 110a-c corresponding size along the longitudinal, and the second distance D2 of one of them of opening 110a-c can be different from one or more until all opening 110a-c.
Should be appreciated that the second beam 114 makes the first beam 108 electric connection each other of the first electric connector 22, to set up common ground path between following: 1) two or more ground connection abutting ends 106 are until all ground connection abutting end 106,2) two or more ground connection installation ends 104 are until all ground connection installation end 104, and 3) at least one ground connection abutting end 106 is until all ground connection abutting ends 106 and at least one ground connection installation end 104 are until all ground connection installation end 104.When the first and second electric connectors 22 and 24 match, and when corresponding ground connection abutting end 106 and 66 (with reference to figure 4A) matches, the common ground path of mating interface 30 and 34 extension striding across electric connector 22 and 24 is set up in common ground shielding 100.Therefore, before the first and second electric connectors 22 and 24 match, the common electrical grounding path striding across the first electric connector 22 is set up in common ground shielding 100.After the first and second electric connectors 22 and 24 match, common ground shielding 100 is also set up and is striden across mating interface 34, strides across at least two ground connection abutting ends 66 of the second electric connector 24 particularly until the path electrical ground of all ground connection abutting end 66.Therefore, first and second electric connectors 22 and 24 can limit corresponding first and second grounding paths, when the first and second electric connectors 22 and 24 match, described first and second grounding paths limit the public grounding path of the first and second electric connectors 22 and 24.
Should be appreciated that shielding body 102 limits multiple hole 110, hole 110 can extend between the first adjacent beam 108, and can extend between the second adjacent beam 114.Such as, although at the plane endoporus 110 limited by longitudinal L and horizontal T in rectangular shape, should be appreciated that hole 110 can limit any shape as required, according to the geometry of the external margin 112 of the first beam 108 and the external margin 116 of the second beam 114.Although shielding body 102 each the first adjacent beam 108 between limit four the second beams 114 and three respective openings 110a-c, but should be appreciated that shielding body 102 can comprise multiple second beam 114, as required to limit multiple respective aperture 110 as required.In addition, each opening 110a-c limits the long-pending respective area equaling the first distance D1 and second distance D2.Therefore, should be appreciated that the area of each opening 110a-c can change, such as, by changing the first and second width W 1 and W2 of the first beam 108 and the second beam 114 respectively, and by the number of change second beam 114 with the distance of L along the longitudinal between adjacent the second beam 114 of corresponding change.Should also be clear that the accumulation area in hole 110, and the accumulation area of therefore opening 110a-c, limit total open area OA of shielding body 102.Total open area OA of shielding body 102 can increase and reduce, such as, by the number of change opening 110a-c and further by the size changing opening 110a-c in the manner.Thus, can provide and there is different open area, and the external member of the common ground shielding 100 of the different area of one or more until all opening 110a-c.
Recognize when the first and second electric connectors 22 and 24 match, first and second electric connectors 22 and 24 laterally A limit mating area 118, and such as mating area 118 can be restricted at least one or both regions overlapping with the ground connection abutting end 66 of the signal electrical contact 44 of the second electric connector 24 and at least one or two (with reference to figure 4A) of abutting end 50 of abutting end 38 and ground connection abutting end 106.Should also be clear that the impedance at mating area 118 place also increases when the total open area OA shielding body 102 increases.Such as, if the not perforation of shielding body 102, and therefore total open area is zero, the impedance at mating area 118 place substantially lower than the expection impedance of electric coupler component 20, to make the expection impedance mismatch of impedance about electric coupler component 20 at mating area 118 place.
In addition, common ground shielding 100 can be configured to when the first and second electric connectors 22 and 24 match at least one or more until all opening 110a-c overlapped signal contact 35 and the second electric connector 24 at least in part signal contact 44 in one or both.According to illustrated embodiment, common ground shielding 100 the first opening 110a can completely overlapped signal contact 35 and signal contact 44 at least partially, such as, at abutting end 50 place, at mating area 118.3rd opening 110c of common ground shielding 100 can, as shown in the figure at mating area 118, partly overlap the second electric connector 24 signal contact 44 at least partially, or can at the signal contact 44 of completely overlapping second electric connector 24 of mating area 118 at least partially.The area of each opening 110a-c can be reduced the crosstalk reducing mating area 118 place.Such as, according to an embodiment, when the first and second electric connectors 22 and 24 match, the area of each opening 110a-c can be less than by the wavelength of the signal striding across signal contact 35 and 44 transmission of the first and second electric connectors 22 and 24.When the frequency striding across the signal that signal electrical contact 35 and 44 transmits increases, the area of opening 110a-c can be reduced.
Therefore the expection impedance that the number of individual opening 110a-c and area and total open area OA are adjustable to make the impedance substantial match electric coupler component 20 at mating area 118 place should be understood, and crosstalk is lowered, allow common ground shielding 100 to set up the common ground path striding across the corresponding earthing component at mating interface 30 and 34 place of the first and second electric connectors 22 and 24 in the manner, such as, at mating area 118 place simultaneously.In other words, hole 110 can limit balance by the impedance of mating area 118 and the area of crosstalk, and wherein crosstalk can raise relatively with signal frequency (or wavelength).
In addition, the common ground shielding 100 of the first electric connector 22 can and corresponding ground plate 62 interval (with reference to figure 4B) of the second electric connector, such as, with the signal contact 44 of the second electric connector 24 along in the region that horizontal T aims at, to limit multiple gap 120, gap 120 along the longitudinal L limits the first distance, and the first distance can be fully close, or substantially equal, second distance D2.Gap 120 can limit second distance along horizontal T further between adjacent ground connection abutting end 66, and second distance can equal the first distance D1 extended between the first adjacent beam 108 of common ground shielding 100 substantially.Such as, to should be appreciated that when the first and second electric connectors 22 and 24 match the first beam 108 can with ground connection abutting end 66 along the longitudinal L aim at.Therefore, gap 120 can limit corresponding area, and its impedance matching being sized to substantially be maintained across mating area 118 also reduces the crosstalk at mating interface 34 place simultaneously.Such as, the area in each gap 120 can be less than the wavelength of the signal of signal contact 44 transmission striding across the second electric connector 24.
As mentioned above, shielding body 102 by about signal electrical contact 35 at side direction A upper offset, to make shielding body 102 and signal electrical contact 35 laterally interval such as distance D3 (with reference to figure 2E).In addition, ground connection installation end 104 can be aimed at along horizontal T with the installation end 40 of signal contact 35.Therefore, when ground connection mounting portion 104 is integrated with shielding body 102 one-tenth, common ground shielding 100 can be included in the transitional region 122 extended between shielding body 102 and each ground connection mounting portion 104.Transitional region 122 can along the longitudinal L backward and laterally A stretch out towards corresponding common column CL.Ground connection mounting portion 104 can the installation end 40 with signal contact along the position of horizontal T aligned in general from transitional region 122 along the longitudinal L extend back.
As mentioned above, common ground shielding 100 also can comprise at least one rib 124, such as multiple rib 124, rib 124 supported by shielding body 102 and from shielding body 102 laterally the outside projection of A to limit abutting end, such as ground connection abutting end 106.According to illustrated embodiment, at least one is until all ribs 124 are from the outwards projection of corresponding first beam 108.According to illustrated embodiment, each rib 124 is molded and makes it protrude on corresponding first beam 108, and is therefore integrated to described corresponding 108 one-tenth, first beam.Therefore, rib 124 also can be called as protuberance, although should be appreciated that rib 124 can construct alternatively as required.Rib 124 can substantially as below about the ground plate 62 of the second electric connector 24 rib 74 as described in construct, and can from the first beam 108 laterally A outside projection one distance, when the first and second electric connectors 22 and 24 match, be enough to the earthing component 59 with the second electric connector 24, and particularly with ground connection abutting end 66, contact.Therefore, the ground connection abutting end 106 of the first electric connector 22 is by limiting from the rib 124 of the outside projection of the first beam 108.Can such as aiming at along horizontal T with signal contact 35 at body 39 place at least partially of rib 124.Such as, between the adjacent Difference signal pair 45 that can being placed at least partially of rib 124 is limited by signal contact 35, and therefore replaceable discrete grounding contact.Thus, the first electric connector 22 can comprise the common ground shielding 100 replacing the discrete grounding contact extended between the adjacent Difference signal pair of typical electrical connector.
Should be appreciated that the selected performance characteristic of common ground shielding 100 can adjust as required.Such as, the area that opening 110a-c limits can adjust as mentioned above, total open area OA that shielding body 102 limits can adjust as mentioned above, and shielding body 102 can adjust further relative to the position of the signal contact 44 of the second electric connector 24 when the first and second electric connectors 22 and 24 match.Such as, shielding body 102 can be arranged at after the longitudinal direction of ground connection installation end 104, or closer to ground connection installation end 104 compared with the embodiment described in Fig. 2 A-E, this can 1) when the first and second electric connectors 22 and 24 match, reduce such as in a part of total open area OA of abutting end 50 place overlapped signal electrical contact 44, and 2) when the first and second electric connectors 22 and 24 match, increase the size of gap 120 L be along the longitudinal arranged between common ground shielding 100 and ground plate 62.In addition, shielding body 102 can be arranged at before the longitudinal direction of ground connection installation end 104, or further from ground connection installation end 104 compared with the embodiment described in Fig. 2 A-E, this can 1) when the first and second electric connectors 22 and 24 match, increase such as in a part of total open area OA of abutting end 50 place overlapped signal electrical contact 44, and 2) when the first and second electric connectors 22 and 24 match, reduce the longitudinal size in the gap 120 be arranged between common ground shielding 100 and ground plate 62.
And with reference now to 3A-D, shielding body 102 and signal electrical contact 35 are by laterally A spacing distance D4.Distance D4 can arrange size as required, and is greater than distance D3 (with reference to figure 2E) according to illustrated embodiment.Such as, common ground shielding 100 can comprise multiple dactylozoite 126, dactylozoite 126 from shielding body 102 along the longitudinal L forward and from shielding body 102 laterally A extend towards corresponding common column CL.According to illustrated embodiment, dactylozoite 126 extends from the first beam 108.Dactylozoite 126 can be integrated with shielding body 102 one-tenths as shown in the figure, or can be separated to make dactylozoite 126 from shielding body 102 and shield body 102 electric connection each other when being connected device housing 31 and supporting.Each dactylozoite 126 can be bifurcated as shown in the figure, or can limit single solid dactylozoite as required.Should be appreciated that ground connection abutting end 106 limits by dactylozoite 126, be configured to earthing component 59 electrical contact with the second electric connector 24 to make dactylozoite 126.Transitional region 122 between ground connection installation end 104 and shielding body 102 can laterally extend to the degree of depth that equals transitional region 122 and extends to make shielding body 102 be in substantially parallel relationship to common column CL by A.
When the first and second electric connectors 22 and 24 match, dactylozoite 126 can contact earthing component 59, and contacts the ground plate body 64 of the second electric connector 24 particularly.Alternatively, dactylozoite 126 can be configured to the ground connection installation end 68 contacting the second electric connector 24 when the first and second electric connectors 22 match with 24.Should be appreciated that common ground shielding also can comprise rib 124 as above and dactylozoite 126.Rib 124 can from shielding body 202 laterally A extend laterally to limit the degree of depth substantially equaling dactylozoite 126 and transitional region 122, thus contact the earthing component 59 of the second electric connector 24 when the first and second electric connectors 22 match with 24, such as, at corresponding installation end 66 place.
Therefore electric coupler component 20 can comprise the first and second crosstalk shields that can coordinate limited respectively by common ground shielding 100 and ground plate 62.First can coordinate twine crosstalk shields, such as common ground shielding 100, comprise the first contact dactylozoite, such as dactylozoite 126, and the second crosstalk shields can limit the second contact dactylozoite, such as ground connection abutting end 66 limit dactylozoite.When the first and second electric connectors 22 and 24 mate with each other, the first contact dactylozoite, such as dactylozoite 126, can material contact ground plate 62, and the second grounding contact dactylozoite, such as, the dactylozoite limited by ground connection abutting end 66, can material contact common ground shielding 100.
Alternatively, the degree of depth of rib 124 degree of depth that can be less than dactylozoite 126 is electrically connected to only have dactylozoite 126 to set up with the earthing component 59 of the second electric connector 24 when the first and second electric connectors 22 and 24 match.Should be appreciated that ground connection abutting end 106 can limit any suitable degree of depth on side direction A as required, with corresponding adjustment shielding body 102 about signal electrical contact 35, and therefore common column CL, the offset or dish D4 on side direction A.
Thus, should be appreciated that the external member of electric connector 22 is configurable and there is different performance characteristics, such as adjusted or be adjusted for crosstalk when reducing unlike signal frequency and wavelength about other the identical electric connector comprising discrete grounding contact instead of common ground shielding 100, and can be configured for further and operate under different impedance level in the operating process of electric connector 22.Such as, each of multiple electric connector 22 can comprise the opening 110a-c of different number, and opening 110a-c has different areas, different total open area OA, and shields body and differently can locate relative to signal contact 35.Such as, the lengthwise position of shielding body 102 can be different, and are biased about signal contact 35.In the configuration that all these are different, should be appreciated that open area, such as, by the region that limits of opening 110a-c extending through shielding body 102, position can difference from connector to connector.This position can along the direction of common column CL being in substantially parallel relationship to signal contact, and different along the direction of the common column CL being generally perpendicular to signal contact.
First electric connector 22 can be called as plug or pin connector, and its electrical contact 33 is configured to be received by the complementary electrical contact of the second electric connector 24, and the second electric connector 24 can be described as socket connector.Alternatively, the electrical contact 33 of the first electric connector 22 can be arranged to the complementary electrical contact of receiving second electric connector 24, thus the first electric connector 22 can be described as socket connector and the second electric connector 24 can be described as pin connector.In addition, because mating interface 30 is oriented to be in substantially parallel relationship to mounting interface 32, so the first electric connector 22 can be described as vertical connector, although should be appreciated that the first electric connector can be provided as any expection be configured to substrate 28 is electrically connected to the second electric connector 24.Such as, the first electric connector 22 can be configured to rigging-angle connector, and mating interface 30 is oriented to and is generally perpendicular to mounting interface 32 thus.
With reference now to Fig. 1 and 4A-F, connector shell 42 that is that the second electric connector 24 comprises dielectric or electric insulation and the multiple electrical contacts supported by connector shell 42, can comprise signal electrical contact 44.According to illustrated embodiment, the second electric connector 24 comprises multiple lead frame assembly 46, and multiple lead frame assembly 46 is supported by connector shell 42 and laterally A is arranged, and side direction A can limit line direction as above.Described multiple lead frame assembly 46 can comprise more than first lead frame assembly limiting the first contact configuration respectively, and limits more than second lead frame assembly 46 of the second contact configuration respectively.Alternatively, lead frame assembly 46 can construct or more than first and second lead frame assembly can be arranged to the pattern of any expection as required across the row of lead frame assembly 46 in the same manner.
Each lead frame assembly 46 can haply as the U.S. Patent application No.12/396 of submission on March 2nd, 2009, such described in 086 constructs, the disclosure of this patent is incorporated to way of reference by entirety, and each lead frame assembly 46 can comprise conductive plate such as ground plate 62 alternatively, for replacing at U.S. Patent application No.12/396, the discrete grounding contact described in 086.Therefore, each lead frame assembly 46 comprises the lead frame housing 48 of dielectric and multiple signal electrical contact 44, and multiple signal electrical contact 44 is carried by lead frame housing 48 and arranges along common column CL.Each lead frame assembly 46 also can comprise the ground plate 62 carried by respective lead frame shell 48.The material of any suitable dielectric, such as air or plastics, can be used for signal electrical contact 44 separated from one another.The lead frame housing 48 of each lead frame assembly 46 limits the first and second contrary outer surfaces 58 and 56 of side direction.
Signal electrical contact 44 limits the corresponding abutting end 50 extended along mating interface 34, and along the contrary installation end 52 that mounting interface 36 extends.The horizontal forward extension of L along the longitudinal of each abutting end 50, and each installation end 52 extends straight down along horizontal T.It is adjacent one another are that lead frame assembly 46 is configured to laterally A.
The installation end 52 of the second electric connector 24 can be similar to the installation end 40 ground structure of the signal electrical contact 35 of the first electric connector 22, and therefore can comprise press-fit tail end, tail end is installed on surface, or fusible element such as tin ball, they are configured to be electrically connected to complementary electrical element such as substrate 28, and complementary electrical element can be configured to backboard, intermediate plate, subcard or similar device.Abutting end 50 is configured to contact when the first and second electric connectors 22 match with 24 and is electrically connected to the abutting end 38 of complementary signal electrical contact 35.The first and second edges 51 that each signal electrical contact 44 can limit corresponding first and second contrary broadsides 49 and be connected between broadside 49.Edge 51 limits the length being less than broadside 49, limits rectangular cross section to make signal electrical contact 44.
The abutting end 50 of each signal contact 44 can comprise from the lead frame housing 48 outward extending neck 37 of forward direction along the longitudinal.Neck 37 can on the direction of the outer surface 58 towards lead frame housing 48 lateral thrust, with corresponding abutting end 66 rough alignment to ground plate 62.Each signal contact 44 also can comprise the dactylozoite 43 of a pair horizontal bifurcated longitudinally outwards or forward extended from neck 37.Bifurcated dactylozoite 43 can be bending and be configured to coordinate with the abutting end 38 of the signal electrical contact 35 of the first electric connector 22.The dactylozoite 43 of bifurcated can be flexible, and can bend when coordinating with abutting end 38 to provide the normal force of resisting abutting end 38.
The installation end 52 of each signal contact 44 can limit from lead frame housing 48 laterally to the neck 53 of downward-extension, and the installing terminal 55 from neck 53 to downward-extension.Neck 53 and/or installing terminal 55 can surfaces 58 and therefore tilting or bending towards ground plate 62 toward the outside.Installing terminal 55 can limit the pinprick formula or any suitable alternative shapes that are configured to be electrically connected to substrate 26.Such as, installing terminal 55 can be pressed in the via hole extended in substrate 26, with the electric mark electric connection extending or extend through substrate 26 along substrate 26.
Signal electrical contact 44 can limit the side direction material thickness of about 0.1mm to 0.5mm and the transverse height of about 0.1mm to 0.9mm.Contact height can change in the length of rectangular signal electrical contact 44.Electrical contact 44 can be spaced apart in any distance as required, as at U.S. Patent application No.12/396, describes in 086.It can be electric insulation or conduction that second electric connector 24 also can comprise IMLA manager 54, IMLA manager 54, and keeps IMLA or lead frame assembly 46.
At least one pair of or multipair adjacent signal electrical contact 44 can be configured to Difference signal pair 45.According to an embodiment, Difference signal pair 45 is edge couplings, that is specifies the edge 51 of each electrical contact 44 of Difference signal pair 45 facing with each other along public laterally row CL.Therefore, electric connector 24 can comprise the multiple Difference signal pairs 45 along specifying row CL to arrange.As shown in the figure, electric connector 24 can comprise four Difference signal pairs 45, they by along row CL edge-p-edge local, but electric connector 24 can comprise the Difference signal pair of any number arranged along designated centers line as required, such as two is right, and three is right, four pairs, five pairs, six is right, or more Difference signal pair.
Because abutting end 50 and installation end 52 less perpendicular each other, so signal electrical contact 44 can be called as right angle electrical contact.Similarly, because mating interface 30 is in substantially parallel relationship to mounting interface 32, so the first electric connector 22 can be provided as vertical pin connector.And, because abutting end 50 is configured to receive the abutting end 38 of the complementary signal electrical contact 35 being configured to plug, so the signal electrical contact 44 of the second electric connector 24 can be called as receptacle contacts.But, should be appreciated that the second electric connector 24 can be provided as any expection be configured to substrate 28 is electrically connected to the first electric connector 22.Such as, the second electric connector 24 can be configured to pin connector, and can be configured to vertical connector in addition as required.When the first and second connectors 22 and 24 to be installed on their corresponding substrates 26 and 28 and to coordinate, substrate 26 and 28 is placed in electric connection.
First and second electric connectors 22 and 24 can be maskless high-speed electrical connectors, between the row of adjacent electrical contact, namely there is no the connector operated under the state of metal crosstalk plate, and can be per second or higher with 4GB, and it is typically per second at 6.25GB and 12.5GB is per second or arbitrary value between them or higher (about 80 to 35 psecs time-to-climb), message transmission rate across Difference signal pair transmission of electric signals, simultaneously by disturb on the polynary crosstalk (multi-activecrosstalk) of admissible worst case be no more than 6 percent.As U.S. Patent No. 7,497, described in 736, the polynary crosstalk of worst case can be determined by closest to by the absolute value sum of disturbing six of Difference signal pair or eight interference Difference signal pairs.Each Difference signal pair can have about 85 to 100 ohm, the differential impedance of upper lower deviation 10%.The corresponding substrate 26 and 28 that differential impedance can be able to be attached thereon to the first electric connector 22 and the second electric connector 24 matches.Until the running frequency of about 5GHz, first electric connector 22 and the second electric connector 24 can have the insertion loss of about-1dB or lower, and until the running frequency of about 10GHz, the first electric connector 22 and the second electric connector 24 can have the insertion loss of about-2dB or lower.
Continue with reference to figure 4A-F, the lead frame housing 48 of each lead frame assembly 46 limits the first and second contrary outer surfaces 58 and 56 of side direction respectively.Lead frame housing 48 can be made up of any suitable dielectric material such as plastics, and carries rectangular signal electrical contact 44.Lead frame assembly 46 can be configured to inlaying moulded lead frame assembly (IMLA), thus according to illustrated embodiment signal electrical contact 44 by the coated shaping of lead frame housing 48.Alternatively, the signal electrical contact 44 of lead frame assembly 46 can be stitched into or otherwise be attached in lead frame housing 48.Each signal electrical contact 44 described above limits abutting end 50 and installation end 52.Abutting end 50 is aimed at by along horizontal T, and installation end 52 is aimed at by L along the longitudinal.Signal contact 44 is arranged in pairs, described to being Difference signal pair 45.Alternatively, signal contact 44 can be provided as single-ended signal contacts.Signal contact 44 more selected, such as one or more until all signal contact 44 adjacent to 45, by interval, gap 60.Signal electrical contact 44 is arranged in lead frame housing 48 in addition with the upper end making gap 60 separate and the lead frame assembly 46 above of signal electrical contact 44.
Each lead frame assembly 46 also comprises earthing component 59, ground plate 62 can be configured to according to illustrated embodiment earthing component 59, or independent ground connection electrical contact can be configured to alternatively, described ground connection electrical contact is carried by lead frame housing 48 and is arranged to adjacent with the signal electrical contact 44 of the second electric connector 24, such as adjacent with the Difference signal pair limited by signal electrical contact 44.According to illustrated embodiment, each ground plate 62 is by a corresponding carrying of lead frame housing 48.Ground plate 62 limits and is arranged to the ground connection abutting end 66 coordinated with the complementary ground contacts of electric connector 22, and is configured to the contrary ground connection installation end 68 being connected to substrate 26.
Ground connection installation end 68 can to stretch out the distance of the installation end 52 being greater than signal electrical contact 44 by L along the longitudinal, as shown in the figure, or the distance of the abutting end 50 substantially equaling signal electrical contact 44 that can stretch out as required.Ground plate 62 limits the multiple gaps 79 be arranged between adjacent abutting end 66.Ground plate 62 is configured to provide electric screen in addition between the Difference signal pair 45 of adjacent row CL.Ground plate 62 can be formed by any suitable electric conducting material such as metal, and comprises body 64, from multiple abutting ends 66 that body 64 extends forward, and the multiple installation ends 68 from body 64 to downward-extension.Ground connection abutting end 66 and installation end 68 can as constructed about as described in the abutting end 50 of signal electrical contact 44 and installation end 52 above.The ground plate 62 of each lead frame assembly 46 can be attached to lead frame housing 48 or the coated shaping of lead frame housing 48 by respective leadframe assembly 46 discretely.Such as, ground plate 62 can comprise lock bolt 89 (with reference to figure 1), and lock bolt 89 extends from ground plate body 64 and is arranged to bonding wire frame shell 48 so that ground plate 62 is fixed to lead frame housing 48.
Continue with reference to figure 4A-F, each ground connection abutting end 66 of ground plate 62 can be configured to from body 64 laterally A and the outward extending dactylozoite of longitudinal L.Such as, ground connection abutting end 66 can comprise the corresponding neck 61 longitudinally extended forward from body 64.Neck 61 can on the direction of the signal contact 44 towards lead frame assembly 46 lateral thrust, to make corresponding abutting end 50 rough alignment of ground connection abutting end 66 and signal contact 44.Thus, ground connection abutting end 66 is configured to coordinate with the ground connection abutting end 106 of complementary first electric connector 22.Each abutting end 66 of ground plate 62 also can comprise the dactylozoite of a pair horizontal bifurcated, and the dactylozoite of described a pair horizontal bifurcated comprises first or the upper dactylozoite 63a and second or lower dactylozoite 63b that longitudinally extend forward respectively.Dactylozoite 63a and 63b can be bending and be configured to coordinate with the abutting end 38 of electrical contact 35.Dactylozoite 63a and 63b flexible with bending when coordinating with abutting end 38, thus provide normal force.Compared with the dactylozoite 43 of signal electrical contact 44, dactylozoite 63a and 63b can longitudinally extend forward further.Each abutting end 66 stretches out from ground plate body 64 and limits the contrary end of each of dactylozoite 63a and 63b.
Each installation end 52 of ground plate 62 can limit from body 64 laterally to the neck 67 of downward-extension, and the installing terminal 69 from neck 67 to downward-extension.Neck 67 and/or installing terminal 69 can tilt towards electrical contact 44 or bend.Installing terminal 69 can limit the pinprick formula or any suitable alternative shapes that are arranged to and are electrically connected to substrate 26.Such as, installing terminal 69 can be pressed in the via hole that extends in substrate 26, with the electric mark electric connection extending or extend through substrate 26 along substrate 26.
The body 64 of ground plate 62 limits the first outer surface 72 and about contrary the second outer surface 70 of the first outer surface 72 side direction.Second outer surface 70 can flush with the outer surfaces 58 of lead frame housing 48, can projection through the outer surfaces 58 of lead frame housing 48, or can to inwardly concave about the outer surfaces 58 of lead frame housing 48.Thus, the electric connector that the size of electric connector 24 can carry discrete grounding contact relative to its IMLA remains unchanged, such as, in U.S. Patent No. 7,497, describe in 736 those, the disclosure of this patent is incorporated to way of reference by entirety.First outer surface 72 is facing to the signal electrical contact 44 of lead frame assembly 46.Ground plate 62 can comprise engagement member, such as, be arranged on the first lip 65a in the slit extended laterally in the outer surface 58 of lead frame housing 48, and is arranged on above lead frame housing 48 to catch the second lip 65b of lead frame housing 48 and ground plate 62.
Ground plate 62 can be conduction.Such as, ground plate can be the metal crosstalk shields of impression and therefore reflect the electromagnetic energy that in use procedure, signal contact 44 produces.Should be appreciated that ground plate 62 can be arranged to absorption electromagnetic energy alternatively.Such as, ground plate 62 can be made up of one or more electroconductive magnetic absorbing materials, such as, obtain from the Emerson & Cuming business being positioned at Massachusetts human relations doffer (Randolph, MA) inhale ripple product.Ground plate 62 can alternatively by one or more SRC obtained from the SRCCables company trade being positioned at Canadian SantaRosa inhale ripple product to make.In addition, because ground plate 62 is arranged between the signal contact 44 of adjacent lead frame assembly 46, so ground plate 62 can provide shielding between the Difference signal pair 45 of adjacent row CL, the crosstalk between the signal contact 44 reducing adjacent lead frame assembly 46.
The ground connection abutting end 66 of ground plate 62 is aimed at by along horizontal T, and is aimed at along horizontal T with the abutting end 58 of signal contact 44 further.The ground connection abutting end 66 of ground plate 62 can be longitudinally outwards biased about the abutting end 58 of signal contact 44.Ground connection installation end 68 is aimed at by L along the longitudinal, and with installation end 52 along the longitudinal L aim at.Ground connection abutting end 66 is oriented between the phase adjacency pair of abutting end 50 that is adjacent with the phase adjacency pair of the abutting end 50 of signal contact and/or that be arranged at signal contact, and ground connection installation end 68 is oriented to and installation end 52 to adjacent and/or be arranged at installation end 52 between.Therefore, the mating interface 34 of electric connector 24 comprises the abutting end 50 of signal electrical contact 44 and the ground connection abutting end 66 of ground plate 62, and the mounting interface 36 of electric connector 24 comprises the installation end 52 of signal electrical contact 44 and the installation end 66 of ground plate 62.
According to illustrated embodiment, when ground plate 62 is attached on lead frame housing 48, ground connection abutting end 66 is placed between a pair abutting end 50 of adjacent signal electrical contact 44.Therefore, in the gap 60 between the abutting end 50 that ground connection abutting end 66 can be placed in adjacent Difference signal pair 45, to make abutting end 50 and 66 along mating interface 34 equi-spaced apart of electric connector 24.Equally, the ground connection installation end 68 of ground plate 62 be positioned in adjacent signal to 45 installation end 52 between in the gap 60 that extends, to make ground connection installation end 68 and 52 by mounting interface 36 equi-spaced apart along electric connector 24.
Multiple lead frame assembly 46 can be constructed identically, and is configured to when ground plate 62 is attached to lead frame housing 48, and at least one is until the mating interface 34 of all lead frame assemblies 46 is configured to the first mode of abutting end 50 and 66.According to illustrated embodiment, first contact configuration is the G-S-S pattern of repetition, wherein " G " represents an abutting end 66 of ground plate 62, and " S " represents an abutting end 50 of signal electrical contact 44, and two adjacent " S " in the G-S-S repeated can represent Difference signal pair 45.Because going up towards mounting interface 36 the G-S-S pattern being configured to repetition along respective column CL abutting end 66 and 50 in downward direction from the top of mating interface 34, so IMLA26a and corresponding abutting end 50 and 66 can say the G-S-S pattern limiting and repeat.Therefore, in the front end towards lead frame assembly 46 from the rear end of lead frame assembly 46, or mating interface 34, longitudinal direction on, installation end 52 and 68 is arranged to the G-S-S pattern of repetition equally.
With reference now to 4A-F, ground plate 62 can comprise at least one rib 74 supported by plate body 64, such as multiple rib 74.Rib 74 as U.S. Patent Application Serial No.12/722, can construct described in 797, and the disclosure of this patent is incorporated to way of reference by entirety.According to illustrated embodiment, each rib 74 is pressed or mold pressing makes it protrude on body 64, and is therefore integrated with body 64 one-tenth.Therefore, rib 74 also can be called as protuberance.As shown in the figure, each rib 74 limits first surface 75, first surface 75 limits and extends internally (such as from outer surface 72 side direction, extend in the lead frame housing 48 of lead frame assembly 46) protuberance 76, and contrary second surface 77, second surface 77 limits the respective recess 78 or recessed surface that extend in the outer surface 70 of ground plate body 64.In other words, body 64 comprises the multiple protuberances 76 from the projection of outer surface 72 side direction, and comprises the multiple recesses 78 be recessed in outer surface 70, corresponding to multiple protuberance 76.Protuberance 76 can extend internally a degree of depth, to aim at the signal electrical contact 44 that lead frame housing 48 carries.Rib 74 is positioned between the inherent adjacent Difference signal pair 45 of lead frame housing equidistant.Rib 74 limits the corresponding closed outer peripheral 80 be spaced along ground plate body 64.Therefore, rib 74 is completely contained in plate body 64.Common ground shielding 100 can be positioned to make rib 124 from shielding body 102 along with the side in the opposite direction projection of rib 74 from plate body 64 projection.
Ground plate 64 can be remained on by lead frame housing 48 and make the ground connection abutting end 66 of ground plate 64 be arranged at position between the abutting end 50 of adjacent Difference signal pair 45.Ground plate 62 can be inserted in lead frame housing 48, Overmolded by lead frame housing 48, or otherwise carried by lead frame housing 48 or keep, with the size making the size of lead frame assembly 48 substantially equal conventional lead frame assembly, described conventional lead frame assembly comprises discrete signal contact that is Overmolded by lead frame housing or that otherwise support and grounding contact.Ground plate body 64 is multiple until a part for all Difference signal pair 45 across what be arranged in lead frame housing 48.Lead frame assembly 46 does not comprise discrete grounding contact, but comprise ground plate 62, ground plate 62 provides Low ESR common path, disperses the electromagnetic energy run into Trimmed sums, otherwise described electromagnetic energy by become adjacent lead frame assembly 48 signal electrical contact 44 between crosstalk sources.Ground plate 62 can be configured to the electromagnetic energy reflecting that in use procedure, signal contact 44 produces, but should be appreciated that plate can be arranged to absorption electromagnetic energy alternatively.Such as, ground plate 62 can be made up of any lossy material, conduction or nonconducting.
A kind of method improving the electrical property of electric connector can be provided.The method can comprise the opening in the crosstalk shields arranging such as common ground shielding 100, such as, in opening 110a-c at least one is until all opening 110a-c, the step of size, for simultaneously raise or reduce measured by differential impedance and reduce measured by near-end cross, far-end cross talk measured by reduction, or reduce measured by near-end cross and measured far-end cross talk.
Should be appreciated that the signal of the embodiment shown in figure and discuss only for exemplary purpose, and should not be construed as restriction content of the present disclosure.Those skilled in the art will recognize that the disclosure contemplates various embodiment.To should also be clear that described by an embodiment and the characteristic sum structure of signal is applicable to all embodiments described herein, unless stated otherwise.In addition, should be appreciated that, the concept as described about above-described embodiment above can be used alone or be combined with above-described other embodiment arbitrary.

Claims (1)

1. one kind is improved the method for the electrical property of electric connector, comprise the step of the size of the opening arranged in crosstalk shields, for simultaneously raise or reduce measured by differential impedance and reduce measured by near-end cross, far-end cross talk measured by reduction, or reduce measured by near-end cross and measured far-end cross talk.
CN201510566837.7A 2011-02-18 2012-02-16 Electric connector with common ground shielding Active CN105207012B (en)

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CN102684009A (en) 2012-09-19

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