CN114530732B

CN114530732B - Differential signal connector

Info

Publication number: CN114530732B
Application number: CN202210101818.7A
Authority: CN
Inventors: 张爽; 王占云; 马陆飞; 周国奇; 袁俊峰
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2021-02-09
Filing date: 2022-01-27
Publication date: 2024-04-16
Anticipated expiration: 2042-01-27
Also published as: CN114530731A; CN114530731B; CN114628959B; CN114628959A; CN114628958A; CN114530733A; CN114530732A; CN114628958B; CN114530733B

Abstract

The invention relates to a differential signal connector comprising a housing and at least two differential signal modules fitted in the housing, said differential signal modules comprising: a module insulator; at least two signal pairs distributed at intervals, wherein the distance between every two adjacent signal pairs is L0, and the distance between two signal contacts forming one signal pair is L2; the shielding sheet is positioned at the vertical side of the arrangement direction of the module insulator and the signal pairs and is used for shielding the signal pairs of the adjacent differential signal modules, and the vertical distance between the shielding sheet and the signal contact is L1; the adjacent signal pairs of the same differential signal module are not shielded between the plug-in terminal contacts. The invention cancels the design of the indirect shielding piece between the adjacent signal pair plug-in ends in the same differential signal module, simplifies the structure of the differential signal module plug-in ends, reduces the volume of the differential signal connector and realizes the miniaturization design.

Description

Differential signal connector

Technical Field

The invention belongs to the technical field of high-speed connectors, and particularly relates to a differential signal connector.

Background

The differential signal connector includes a housing and differential signal modules mounted in a stack in the housing, the differential signal modules including module insulators and contacts encapsulated in the module insulators, the contacts being arranged in pairs and forming signal pairs. Differential signal connectors are widely used in high-speed signal transmission applications.

Chinese patent publication No. CN102969621B and publication No. 2016.03.23 discloses a differential contact module, which includes an insulating substrate, a signal pair assembled in the insulating substrate, and a ground contact, wherein a shielding plate is disposed on the insulating substrate at one side of the signal pair and the ground contact, and crosstalk between adjacent signal pairs is reduced by the shielding plate and the ground contact. The insertion part and the crimping part of the differential signal module need to consider the position of the grounding pin, and the two contact ends of the differential signal module have complex structures, so that the technical problem of large whole volume of the differential signal connector is caused.

Disclosure of Invention

The invention aims to provide a differential signal connector which is used for solving the technical problem that the differential signal connector is large in size due to the fact that signal pairs and ground pins of a current differential signal module are distributed in a staggered mode and a plugging end and a crimping end are complex.

The aim and the technical problems of the invention are realized by adopting the following technical proposal. According to the invention, a differential signal connector comprises a housing and at least two differential signal modules assembled in the housing, wherein the differential signal modules comprise:

A module insulator; at least two signal pairs distributed at intervals, wherein the distance between every two adjacent signal pairs is L0, and the distance between two signal contacts forming one signal pair is L2; the shielding sheet is positioned at the vertical side of the arrangement direction of the module insulator and the signal pairs and is used for shielding the signal pairs of the adjacent differential signal modules, and the vertical distance between the shielding sheet and the signal contact is L1; the adjacent signal pairs of the same differential signal module are not shielded between the plug-in end contacts, L1 is more than or equal to 0.2mm and less than or equal to 0.4mm, L0 is more than or equal to 3mm and less than or equal to 4.5mm, and the material thickness of the signal contact is more than or equal to L2 and less than or equal to 2 times the material width of the signal contact.

The aim and the technical problems of the invention can be further realized by adopting the following technical measures.

Preferably, the signal pairs of at least one differential signal module are provided with shielding plates at two opposite sides perpendicular to the arrangement direction, and the arrangement of double-side shielding can enhance the crosstalk resistance of the signal pairs between the differential signal modules.

Preferably, the signal pair of at least one differential signal module is provided with shielding sheets only on one side perpendicular to the arrangement direction, and shielding is only arranged on one side of a single differential signal module, so that the structure of the differential signal module can be effectively simplified.

Preferably, there is no medium between at least one pair of adjacent differential signal modules, and contacts of adjacent signal pairs of the at least one differential signal module are tilted to different sides of the module, so as to ensure connection reliability of the contacts of the crimp ends.

Preferably, at least one pair of adjacent differential signal modules has no medium therebetween, and adjacent signal pairs in at least one pair of adjacent differential signal modules are staggered in the arrangement direction of the differential signal modules so as to reduce crosstalk between the signal pairs between the adjacent differential signal modules.

Preferably, adjacent signal pairs in at least one pair of adjacent differential signal modules are staggered in the arrangement direction of the differential signal modules, and contacts of the crimping ends of the adjacent signal pairs in at least one differential signal module tilt towards different sides of the modules.

Preferably, an insulating or conductive shielding inter-sheet medium is arranged between at least one pair of adjacent differential signal modules, and adjacent signal pairs in the at least one pair of adjacent differential signal modules are staggered in the arrangement direction of the differential signal modules.

Preferably, an insulating or conductive shielding inter-sheet medium is arranged between at least one pair of adjacent differential signal modules, and contacts of the crimping ends of the adjacent signal pairs in at least one differential signal module tilt towards different sides of the module.

Preferably, the medium between the shielding sheets is an insulating medium which is the same as the module insulator in material, so that the crosstalk resistance of signal pairs in different differential signal modules is enhanced, and the deformation risk of the differential signal modules can be reduced.

Preferably, the conductive contact faces of adjacent signal pairs of the crimp end contacts in at least one differential signal module are oppositely facing.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the invention can achieve quite technical progress and practicability, has wide industrial application value, and has at least the following advantages:

The differential signal connector provided by the invention eliminates the grounding shielding arrangement between the signal pair plug-in terminal contacts in the same differential signal module, simplifies the structure of the differential signal module plug-in terminal, reduces the volume of the differential signal connector, realizes the miniaturization of the differential connector, and solves the technical problem of larger volume of the differential signal connector caused by the complex structure of the plug-in part of the conventional differential signal module.

Drawings

Fig. 1 is a schematic structural diagram of a differential signal connector in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a differential signal module in embodiment 1 of the present invention;

fig. 3 is a cross-sectional view of a differential signal module according to embodiment 1 of the present invention;

FIG. 4 is a schematic diagram of the structure of the signal pair and module insulator, shielding sheet according to embodiment 1 of the present invention;

FIG. 5 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 1 of the present invention;

Fig. 6 is a sectional view of two signal modules in embodiment 1 of the present invention after assembly;

FIG. 7 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 2 of the present invention;

fig. 8 is a schematic structural diagram of two signal modules in embodiment 2 of the present invention after being assembled;

FIG. 9 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 3 of the present invention;

fig. 10 is a sectional view showing two signal modules in embodiment 3 of the present invention after being assembled;

FIG. 11 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 4 of the present invention;

fig. 12 is a sectional view showing two signal modules in embodiment 5 of the present invention after being assembled;

FIG. 13 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 5 of the present invention;

FIG. 14 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 6 of the present invention;

FIG. 15 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 7 of the present invention;

fig. 16 is a sectional view of two signal modules in embodiment 7 after assembly;

FIG. 17 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 8 of the present invention;

Fig. 18 is a cross-sectional view of a differential signal module in embodiment 11 of the present invention;

FIG. 19 is a schematic diagram of the signal pairs and module insulator, shield strips of embodiment 11 of the present invention;

FIG. 20 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 11 of the present invention;

fig. 21 is a sectional view showing two signal modules in embodiment 11 of the present invention after being assembled;

FIG. 22 is a block diagram showing two signal modules in example 11 of the present invention after assembly;

FIG. 23 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 12 of the present invention;

FIG. 24 is a schematic diagram showing the assembled structure of two signal modules in embodiment 12 of the present invention;

FIG. 25 is a schematic view showing the structure of the crimp end on the signal contact in example 13 of the present invention;

Fig. 26 is a sectional view showing two signal modules in embodiment 13 of the present invention after being assembled;

FIG. 27 is a schematic view showing the structure of the crimp end on the signal contact in example 14 of the present invention;

fig. 28 is a sectional view showing two signal modules in embodiment 15 of the present invention after assembly;

Fig. 29 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 15 of the present invention;

FIG. 30 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 16 of the present invention;

FIG. 31 is a schematic view showing the structure of the crimp end on the signal contact in example 17 of the present invention;

Fig. 32 is a sectional view showing two signal modules in embodiment 17 of the present invention after being assembled;

FIG. 33 is a schematic view showing the structure of the crimp end on the signal contact in embodiment 18 of the present invention;

fig. 34 is a schematic diagram showing the constitution of a differential signal connector assembly according to embodiment 19 of the present invention;

Fig. 35 is a schematic diagram showing the plugging state of the differential signal connector assembly according to embodiment 19 of the present invention;

Fig. 36 is a cross-sectional view of the mating area of the differential signal connector assembly of embodiment 19 of the present invention;

Fig. 37 is an enlarged view of a portion of the mating region of the differential signal connector assembly of embodiment 19 of the present invention;

Fig. 38 is a schematic diagram showing a plugging structure of a differential signal connector assembly according to embodiment 19 of the present invention;

fig. 39 is a second schematic diagram of the plugging structure of the differential signal connector assembly according to embodiment 19 of the present invention;

fig. 40 is a schematic diagram showing a three-dimensional structure of a differential signal connector assembly according to embodiment 19 of the present invention;

Fig. 41 is a schematic diagram showing a plugging structure of a differential signal connector assembly according to embodiment 19 of the present invention;

Fig. 42 is a schematic diagram showing a plugging structure of a differential signal connector assembly according to embodiment 19 of the present invention;

FIG. 43 is a sixth schematic illustration of the mating structure of the differential signal connector assembly according to embodiment 19 of the present invention;

Fig. 44 is a cross-sectional view of the mating area of the differential signal connector assembly of embodiment 20 of the present invention;

FIG. 45 is an enlarged view of a portion of the mating field of the differential signal connector assembly of embodiment 20 of the present invention;

fig. 46 is a schematic diagram showing the plugging structure of the differential signal connector assembly according to embodiment 20 of the present invention;

Fig. 47 is a schematic view showing the plugging structure of a differential signal connector assembly according to embodiment 21 of the present invention;

fig. 48 is a schematic plugging diagram of a differential signal connector assembly according to embodiment 23 of the present invention;

FIG. 49 is a simulation of crosstalk for comparative example 1 with the modules of the present invention shielded on both sides;

FIG. 50 is a simulation of crosstalk for comparative example 2 with the inventive module double-sided shielding;

FIG. 51 is a simulation graph of crosstalk for comparative example 3 with the modules of the present invention double-sided shielding;

FIG. 52 is a simulation plot of crosstalk for comparative example 4 with the inventive module double-sided shielding;

FIG. 53 is a simulation graph of crosstalk for comparative example 5 with the inventive module double-sided shielding;

FIG. 54 is a simulation graph of crosstalk for comparative example 6 with the inventive module double sided shielding;

FIG. 55 is a simulation graph of crosstalk for comparative example 7 with the modules of the present invention double-sided shielding;

FIG. 56 is a simulation plot of crosstalk for comparative example 8 with the inventive module double-sided shielding;

FIG. 57 is a simulation diagram of crosstalk of effect example 1 when the modules of the present invention are shielded on both sides;

FIG. 58 is a simulation diagram of crosstalk of effect example 2 when the modules of the present invention are shielded on both sides;

FIG. 59 is a simulation diagram of crosstalk of effect example 3 when the modules of the present invention are shielded on both sides;

FIG. 60 is a simulation diagram of crosstalk of effect example 4 when the modules of the present invention are shielded on both sides;

FIG. 61 is a simulation diagram of crosstalk of effect example 5 when the modules of the present invention are shielded on both sides;

FIG. 62 is a simulation diagram of crosstalk of effect example 6 when the modules of the present invention are shielded on both sides;

FIG. 63 is a simulation of crosstalk for effect example 7 when the modules of the present invention are shielded on both sides;

FIG. 64 is a simulation diagram of crosstalk of effect example 8 when the modules of the present invention are shielded on both sides;

FIG. 65 is a simulation of crosstalk for comparative example 1 with a single side of the inventive module shielded;

FIG. 66 is a simulation plot of crosstalk for comparative example 2 with a single side of the inventive module shielded;

FIG. 67 is a simulation graph of crosstalk for comparative example 3 with a single side of the inventive module shielded;

FIG. 68 is a simulation plot of crosstalk for comparative example 4 with a single side of the inventive module shielded;

FIG. 69 is a simulation graph of crosstalk for comparative example 5 when a module of the present invention is provided with a shield on one side;

FIG. 70 is a simulation of crosstalk for comparative example 6 with a single side of the inventive module with shielding;

FIG. 71 is a simulation graph of crosstalk for comparative example 7 with a single side of the inventive module shielded;

FIG. 72 is a simulation of crosstalk for comparative example 8 with a single side shield of the inventive module;

FIG. 73 is a simulation plot of crosstalk for comparative example 9 with a single side of the inventive module shielded;

FIG. 74 is a simulation of crosstalk for effect example 1 when a module of the present invention is shielded on one side;

FIG. 75 is a simulation of crosstalk for effect example 2 when a module of the present invention is shielded on one side;

FIG. 76 is a simulation of crosstalk for effect example 3 when a module of the present invention is shielded on one side;

FIG. 77 is a simulation diagram of crosstalk of effect example 4 when a module of the present invention is provided with a shield on one side;

FIG. 78 is a simulation diagram of crosstalk of effect example 5 when a module of the present invention is provided with a shield on one side;

FIG. 79 is a simulation diagram of crosstalk of effect example 6 when a module of the present invention is provided with a shield on one side;

FIG. 80 is a simulation diagram of crosstalk of effect example 7 when a single side of the module of the present invention is shielded;

fig. 81 is a cross-talk simulation diagram of effect example 8 when a module of the present invention is provided with a shield on one side.

[ Main element symbols description ]

1-Housing 2-differential signal module 21-module insulator 22-signal pair

221-Signal contact 2211-conductive contact surface 2212-horizontal bend 2213-first contact

2214-90 Degree bend 2215-second contact 222-first signal pair 223-second signal pair

23-Shield sheets 3-inter-shield sheet medium 4-first connector 5-second connector

6-Inserting area 7-first printed board 8-second printed board 9-air cavity

Detailed Description

In order to further describe the technical means and effects adopted by the present invention to achieve the preset purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects of the differential signal connector according to the present invention with reference to the accompanying drawings and the preferred embodiments.

Example 1

As shown in fig. 1 to 6, the differential signal connector of the present invention includes a housing 1 and differential signal modules 2 stacked and mounted on the housing 1, and in this embodiment, eight differential signal modules 2 are provided in total, but is not limited thereto.

The differential signal module 2 includes a module insulator 21, signal pairs 22 and a shielding plate 23, and one differential signal module 2 includes four signal pairs 22, each signal pair 22 includes two signal contacts 221, the line width of the signal contacts 221 is W, the material thickness is H, each signal contact 221 is embedded in the module insulator 21, and the signal contacts 221 in this embodiment are bent contacts. In this embodiment, the pitches between the two signal contacts 221 of each signal pair 22 are equal, and the pitch is always L2. The module insulator 21 has a plate shape, and the differential signal modules 2 are arranged in parallel on the housing 1. The arrangement direction of the plurality of differential signal modules 2 is perpendicular to the arrangement direction of the signal pairs 22 on the same differential signal module 2. Between adjacent differential signal modules 2 there is a shield inter-plate medium 3 with a thickness L3, the shield inter-plate medium 3 being an insulating medium or a conducting medium. In this embodiment, the inter-shield-sheet medium 3 is an insulating medium of the same material as the module insulator 21. In other embodiments, when the medium between the shielding sheets is an insulating medium, the material of the insulating medium and the module insulator may be different; the inter-shield-sheet medium may also be air. When the inter-shield-sheet medium 3 is solid, the presence of the inter-shield-sheet medium can effectively prevent deformation of the differential signal module 2.

In the present embodiment, two shielding pieces 23 are provided in the same differential signal module 2, and the two shielding pieces 23 are provided on opposite sides of the module insulator 21 perpendicular to the arrangement direction of the signal pairs 22 for shielding the signal pairs 22 on the adjacent differential signal module. The vertical distance from the shield plate 23 in the same differential signal module to the signal contacts 221 in each signal pair 22 is L1, i.e. each signal contact in the same differential signal module is located on the central axis of the module insulator.

In this embodiment, there is no shielding between the signal pairs 22 of the same differential signal module 2, and the signal pairs 22 include a press-connection end contact, a routing portion and a plug-connection end contact, where the routing portion of the adjacent signal pair 22 is completely filled with an insulating medium, and the space between the press-connection end contact and the plug-connection end contact is filled with an air medium.

In this embodiment, the insulating medium between the routing portions of the adjacent signal pairs 22 is formed by a part of the module insulator 21, and the adjacent signal pairs 22 in the same differential signal module 2 are not shielded and the pitch between the adjacent signal pairs is constant at L0. The differential signal module 2 is not provided with a grounding shielding piece, the arrangement position of the grounding shielding piece of the plugging terminal of the differential connector is not required to be considered, the structure of the differential connector is greatly simplified, and the volume of the differential connector is reduced. At this time, the vertical distance L1 from the shielding sheet 23 to the signal contacts satisfies 0.2mm < L1 < 0.4mm, the spacing L2 between two signal contacts in the same signal pair 22 satisfies H < L2 < 2W, and the spacing L0 between adjacent signal pairs 22 in the same differential signal module 2 satisfies 3mm < L0 < 4.5mm.

In this embodiment, the crimp end contact of the signal contact has a conductive contact surface 2211 for contacting with a circuit board, and in this embodiment, the conductive contact surfaces 2211 on the same differential signal module face the same direction.

In this embodiment, the center lines of the signal pairs 22 in the same differential signal module 2 are on the same plane; in the two adjacent differential signal modules 2, the signal pair 22 on one differential signal module 2 and the adjacent signal pair 22 on the other differential signal module 2 are opposite to each other in the arrangement direction of the two differential signal modules, that is, the central lines of the corresponding signal pairs 22 on the adjacent layer differential signal modules are in one-to-one correspondence in the arrangement direction of the differential signal modules 2, and no deviation exists.

According to the invention, through the shielding mode, complete shielding can be formed on two sides of the signal pair 22 in the differential signal module 2, interference between adjacent differential signal modules is avoided, and a better shielding effect is achieved. The adjacent differential signal pairs 22 of the same differential signal module have no shielding structure, so that the design of the product plugging end is more flexible, and the miniaturization of the product is realized. The signal pair 22 in this embodiment is fixed to the insulator by injection molding, and injection molding is facilitated by eliminating the ground shield.

Example 2

The structure of the differential signal connector in this embodiment differs from that in embodiment 1 only in that: as shown in fig. 8 and fig. 7, in the same differential signal module 2, the crimp end contacts of the adjacent signal pairs 22 tilt towards different sides of the differential signal module, so that the conductive contact surfaces 2211 on the crimp end contacts of the signal contacts of the adjacent signal pairs 22 face opposite directions, and the contact effect of the crimp ends in the vibration environment is ensured.

Example 3

The structure of the differential signal connector in this embodiment differs from that in embodiment 2 only in that: as shown in fig. 10 and 9, in two adjacent differential signal modules 2, the signal pair 22 on one differential signal module is arranged offset from the signal pair 22 on the other differential signal module in the arrangement direction of the two differential signal modules, and the offset distance L4 of the adjacent signal pairs of the two adjacent differential signal modules in the arrangement direction of the differential signal modules is 1mm to 1.5mm, in this embodiment, the L4 is 1mm. I.e. there is a deviation of 1mm between the centerlines of the corresponding signal pairs 22 on the adjacent layer differential signal module 2 in the arrangement direction of the differential signal modules 2, thereby reducing the influence between the adjacent signal pairs on the adjacent layer differential signal module.

Example 4

The structure of the differential signal connector in this embodiment differs from that in embodiment 1 only in that: as shown in fig. 11, in two adjacent differential signal modules 2, the signal pair 22 on one differential signal module is offset from the signal pair 22 on the other differential signal module by a distance L4 of 1.25mm in the arrangement direction of the two differential signal modules.

Example 5

The structure of the differential signal connector in this embodiment differs from that in embodiment 1 only in that: a shielding sheet is shared between adjacent differential signal modules 2, and medium between the shielding sheets is not present. As shown in fig. 13 and 12, in the eight differential signal modules 2 in this embodiment, one differential signal module 2 is a double-shielding-sheet signal module, the double-shielding-sheet signal module is located at an end portion in the arrangement direction of the differential signal modules 2, the other differential signal modules are single-shielding-sheet signal modules, shielding sheets 23 are fixed on one side of a module insulator 21, and when the differential signal modules are stacked, one shielding sheet 23 is shared between the signal pairs 22 of two adjacent differential signal modules 2. In other embodiments, each differential signal module may be provided with only one shielding sheet, and the differential signal module may be further provided with one shielding sheet during assembly.

Example 6

The structure of the differential signal connector in this embodiment differs from that in embodiment 5 only in that: as shown in fig. 14, in the same differential signal module 2, the conductive contact surfaces 2211 on the signal contacts 221 of the adjacent signal pairs 22 face opposite directions and are respectively located on two sides of the central axis of the module. In this embodiment, the crimp end contacts of the signal contacts of adjacent signal pairs are tilted toward different sides of the differential signal module.

Example 7

The structure of the differential signal connector in this embodiment differs from that in embodiment 5 only in that: as shown in fig. 16 and 15, in the adjacent two differential signal modules 2, the signal pair 22 on one differential signal module is arranged offset from the signal pair 22 on the other differential signal module in the arrangement direction of the two differential signal modules by a distance L4 of 1.5mm in this embodiment.

Example 8

The structure of the differential signal connector in this embodiment differs from that in embodiment 6 only in that: as shown in fig. 17, in two adjacent differential signal modules 2, the signal pair 22 on one differential signal module is offset from the signal pair 22 on the other differential signal module by a distance L4 of 1.5mm in the arrangement direction of the two differential signal modules.

Example 9

The structure of the differential signal connector in this embodiment differs from that in the above-described specific embodiment only in that: adjacent signal pairs of the same differential signal module are filled with module insulation and air.

Example 10

The structure of the differential signal connector in this embodiment differs from that in the above-described specific embodiment only in that: the signal contacts are straight contacts.

Example 11

The structure of the differential signal connector in this embodiment differs from that in embodiment 1 only in that: as shown in fig. 18 to 22, in the differential signal module 2 of this embodiment, only one shielding sheet 23 is provided on one side of the module insulator, and after a plurality of differential signal modules are stacked on the housing, one shielding sheet is assembled on the other side of the differential signal module located at the end, at this time, the vertical distance L1 from the shielding sheet 23 to the signal contact satisfies 0.2 mm-L1-0.4 mm, the spacing L2 between two signal contacts in the same signal pair 22 satisfies H-L2-2W, and the spacing L0 between adjacent signal pairs 22 satisfies 3 mm-L0-4.5 mm in the same differential signal module 2.

Example 12

The structure of the differential signal connector in this embodiment differs from that in embodiment 11 only in that: as shown in fig. 24 and 23, in the same differential signal module 2, the conductive contact surfaces 2211 on the signal contacts 221 of adjacent signal pairs 22 face opposite directions. In this embodiment, the crimp end contacts of the signal contacts of adjacent signal pairs are tilted toward different sides of the differential signal module.

Example 13

The structure of the differential signal connector in this embodiment differs from that in embodiment 12 only in that: as shown in fig. 26 and 25, in the adjacent two differential signal modules 2, the signal pair 22 on one differential signal module is arranged offset from the signal pair 22 on the other differential signal module in the arrangement direction of the two differential signal modules, and the offset distance L4 of the adjacent signal pairs of the two adjacent differential signal modules in the arrangement direction of the differential signal modules is 1mm to 1.5mm, in this embodiment, the L4 is 1mm.

Example 14

The structure of the differential signal connector in this embodiment differs from that in embodiment 11 only in that: as shown in fig. 27, in the adjacent two differential signal modules 2, the signal pair 22 on one differential signal module is arranged offset from the signal pair 22 on the other differential signal module in the arrangement direction of the two differential signal modules, and the offset distance L4 of the adjacent signal pairs of the two adjacent differential signal modules in the arrangement direction of the differential signal modules is 1.5mm.

Example 15

The structure of the differential signal connector in this embodiment differs from that in embodiment 11 only in that: as shown in fig. 29 and 28, in this embodiment, there is no inter-shield-sheet medium between two adjacent differential signal modules, that is, two adjacent differential signal modules 2 share one shield sheet 23, and only one side of each differential signal module except for one differential signal module 2 at the end is provided with the shield sheet 23.

Example 16

The structure of the differential signal connector in this embodiment differs from that in embodiment 15 only in that: as shown in fig. 30, in the same differential signal module 2, the conductive contact surfaces 2211 on the signal contacts 221 of adjacent signal pairs 22 face opposite directions. In this embodiment, the crimp end contacts of the signal contacts of adjacent signal pairs are tilted toward different sides of the differential signal module.

Example 17

The structure of the differential signal connector in this embodiment differs from that in embodiment 15 only in that: as shown in fig. 32 and 31, in the adjacent two differential signal modules 2, the signal pair 22 on one differential signal module is arranged offset from the signal pair 22 on the other differential signal module in the arrangement direction of the two differential signal modules, and the offset distance L4 of the adjacent signal pairs of the two adjacent differential signal modules in the arrangement direction of the differential signal modules is 1.25mm.

Example 18

The structure of the differential signal connector in this embodiment differs from that in embodiment 16 only in that: as shown in fig. 33, in the adjacent two differential signal modules 2, the signal pair 22 on one differential signal module is arranged offset from the signal pair 22 on the other differential signal module in the arrangement direction of the two differential signal modules, and the offset distance L4 of the adjacent signal pairs of the two adjacent differential signal modules in the arrangement direction of the differential signal modules is 1.25mm.

Example 19

The differential signal connector assembly in this embodiment includes a first connector 4 and a second connector 5 that are adapted to be plugged, where the first connector 4 may be the differential signal connector described in any of embodiments 1-8 and 11-18, and the second connector 5 is different from the differential signal connector described in embodiments 1-8 and 11-18 in that: the signal contact in the second connector is a straight contact; because no shielding structure is arranged between adjacent signal pairs in the same differential signal module in the first connector 4 and the second connector 5, when the first connector 4 and the second connector 5 are plugged, shielding sheets corresponding to the differential signal modules are contacted with each other to form a plugging area shielding cavity, signal pair plugging terminal contacts in corresponding differential signal modules are contacted and conducted in the plugging area shielding cavity, and no shielding exists between the plugging terminal contacts of adjacent signal pairs.

The first connector 4 and the second connector 5 of the present embodiment also have the following features at the mating end: 34-43, the signal pair in the first connector 4 is defined as a first signal pair 222, the plug end contact of the first signal pair 222 has a thickness of H1 and a width of W1, and the interval between two adjacent plug end contacts is D1; the signal pair in the second connector 5 is a second signal pair 223, the thickness of the plug end contact of the second signal pair 223 is H2, the width is W1, and the interval between two adjacent plug end contacts is D2; the thickness direction of the plug-in end contact of the first signal pair 222 is consistent with the thickness direction of the differential signal module, and the thickness direction of the plug-in end contact of the second signal pair 223 is perpendicular to the thickness direction of the differential signal module, so that the wall surface of the first signal pair along the thickness direction is in contact conduction with the wall surface of the second signal pair along the width direction.

In this embodiment, the distance D1 between the two mating end contacts of the first signal pair is smaller than the distance D2 between the two mating end contacts of the second signal pair, so that the contact of the second signal pair 223 is located outside the contact of the first signal pair 222 as a whole when the first connector 4 and the second connector 5 are plugged, and the mating end contacts of the first signal pair 222 are clamped, so that reliable contact between the two mating ends is achieved.

In this embodiment, the specific plugging structure of the plug end contact of the second signal pair 223 and the plug end contact of the first signal pair 222 includes the following several types:

In the first structure, as shown in fig. 38, the first signal pair 222 is not bent in the plugging area, and the two plugging end contacts are protruded outwards in the direction perpendicular to the thickness of the material to form a first contact 2213; the two mating end contacts of the second signal pair 223 form a clamping cavity for clamping the first signal pair 222, and the width of the clamping cavity is smaller than the width of the first signal pair 222 where the first contact 2213 is provided, thereby achieving reliable contact of the signal pairs in the first connector and the second connector. The root of the plug-in end contact of the second signal pair 223 is designed with a horizontal bending structure 2212 so as to meet the width requirement and the packaging requirement of the clamping cavity.

The inner sides of the front ends of the two plugging end contacts of the second signal pair 223 are also bent to form a second contact 2215, and the second contact 2215 can be in contact with the wall surface of the plugging end contact of the first signal pair along the thickness direction, so that the contact reliability between the two plugging ends is enhanced.

In the second structure, as shown in fig. 39, the two plug-in end contacts of the first signal pair are not bent in the plug-in area, and first contacts 2213 are formed in a protruding manner in a direction perpendicular to the thickness of the material, and the two first contacts 2213 on the same signal pair are distributed in opposite directions; the two plug-in end contacts of the second signal pair 223 are in a straight pin structure, the two straight pins of the second signal pair form a clamping cavity for the two plug-in end contacts of the first signal pair to be inserted, and the arrangement of the first contact 2213 ensures reliable contact of the two.

In the third structure, as shown in fig. 40, the two plug-in end contacts of the first signal pair are not bent in the plug-in area, and first contacts 2213 are formed in a protruding manner in the direction perpendicular to the thickness of the material, and the two first contacts 2213 on the same signal pair are distributed in opposite directions; the material thickness direction of the plug-in end contact of the second signal pair 223 is perpendicular to the thickness direction of the differential signal module, the material thickness direction of other parts of the second signal pair is consistent with the thickness direction of the differential signal module, the plug-in end contact of the second signal pair 223 is formed by bending the root part by 90 degrees, and the two plug-in end contacts after bending form a jack structure for clamping the two plug-in end contacts of the first signal pair. The bending directions of the two plug-in end contacts of the same second signal pair 223 are identical.

The structure IV, the difference between the inserting structure and the structure III is that: as shown in fig. 41, the bending directions of the two mating terminal contacts of the same second signal pair are opposite.

The fifth structure is different from the third structure in that: as shown in fig. 42, the front ends of the two mating end contacts of the second signal pair are further turned inwards to form a second contact 2214, the first signal pair 222 is inserted into the clamping cavity of the second signal pair 223, the first contact 2213 outside the front end of the first signal pair 222 contacts with the second signal pair, the second contact 2214 inside the front end of the second signal pair contacts with the outer wall of the first signal pair contact, and the plugging structure changes the single contact between the signal contacts into double contact, so that the clamping force of the jack is increased, the contact area is increased, and the contact is more reliable.

The structure six, this insert structure and structure four's difference lies in: as shown in fig. 43, the front ends of the two mating end contacts of the second signal pair are further turned inwards to form a second contact 2214, the first signal pair 222 is inserted into the clamping cavity of the second signal pair 223, the first contact 2213 outside the front end of the first signal pair 222 contacts with the second signal pair, the second contact 2214 inside the front end of the second signal pair contacts with the outer wall of the first signal pair contact, and the plugging structure changes the single contact between the signal contacts into double contact, so that the clamping force of the jack is increased, the contact area is increased, and the contact is more reliable.

Example 20

This embodiment differs from embodiment 19 in that: as shown in fig. 44-46, the mating end contact of the first signal pair 222 is located entirely outside the mating end contact of the second signal pair 223 and clamps the mating end contact of the second signal pair 223 to achieve reliable contact of the two mating ends. In this embodiment, a clamping cavity of the jack structure is formed between two plug-in end contacts of the first signal pair 222, and the two plug-in end contacts are provided with first contacts 2213 opposite to each other in a direction perpendicular to the thickness of the material, and the plug-in end contacts of the second signal pair 223 are in a straight pin structure, and are inserted into the clamping cavity of the front end of the first signal pair and are in contact with the first contacts 2213.

Example 21

This embodiment differs from embodiment 19 in that: as shown in fig. 47, the two mating end contacts of the first signal pair are each bifurcated in a direction perpendicular to the thickness of the material to form an independent receptacle, and each bifurcated inner side is formed with a first contact 2213, and the two mating end contacts of the second signal pair 223 are each straight pins adapted to the receptacle at the front end of the single mating end contact of the corresponding first signal pair, and the single straight pin is adapted to be inserted into the single receptacle.

Example 22

This embodiment differs from embodiment 21 in that: the two plug-in terminal contacts of the second signal pair 223 are bent by 90 degrees and then are in a state that the thickness direction is perpendicular to the thickness direction of the differential signal module.

Example 23

This embodiment differs from embodiment 19 in that: as shown in fig. 48, the signal contacts in the first connector 4 and the second connector 5 are bent contacts, and the first connector 4 and the second connector 5 are inserted to achieve orthogonal connection between printed boards. In this embodiment, the inserting structure between the first signal pair and the second signal pair may be the inserting structure one and the inserting structure two in embodiment 19, or may be the inserting structure in embodiment 20 or embodiment 21.

Example 24

This embodiment differs from any of embodiments 19-23 in that: adjacent signal pairs 22 in the same differential signal module 2 are shielded only at the plug-in end contacts, and other parts are shielded. In this embodiment, when the connectors are plugged, the shielding sheets 26 of the first connector 4 and the second connector 5 are in contact conduction to form a shielding cavity of a plugging area, and adjacent signal pairs in the shielding cavity of the same plugging area are not shielded, at this time, the distance L2 between the plugging end contacts of two signal contacts 221 forming one signal pair 22, the distance L1 between the plugging end contact of each signal contact 221 and the shielding sheets 23 at two sides, and the distance L0 between adjacent signal pairs at the plugging end satisfy that L1 is less than or equal to 0.2mm and less than or equal to 0.4mm, L2 is less than or equal to 2W, and L0 is less than or equal to 3mm and less than or equal to 4.5mm. According to the differential signal module, shielding among signal pairs is realized through the shielding sheets distributed along the direction perpendicular to the arrangement direction of the signal pairs, no shielding exists between adjacent signal pairs from the crimping end contact to the plugging end contact, and insulating medium is filled only between wiring parts to keep the module structure. The resulting single wafer chip is packaged with the differential signal pair in the middle and ground pins on both sides. The differential signal pair has no shielding structure, so that the design of the product inserting end is more flexible, and the miniaturization of the product is realized. The connector applying the differential signal module can meet the miniaturization requirement.

The characteristic impedance is a main parameter correlated with all performance characteristics of the high-speed data system, and when the characteristic impedance of the connector is matched with the impedance value of a system link, the smaller the influence of the loss, reflection, oscillation and other influencing factors of the signal in the connector is, the higher transmission rate is easy to obtain. In order to meet the design requirement of differential impedance, mathematical model calculation is adopted in the design process to adjust the structural size of the transmission model, so that the characteristic impedance requirement of the product is ensured. And simulating the model through simulation software to obtain the simulation result of crosstalk and insertion loss of the model.

The performance of the differential signal connector of the present invention will be described below with reference to comparative examples and specific effect examples, taking a connector composed of three rows of differential signal modules as an example.

In the technical field of high-speed connectors, the connector with shielding plates arranged on two sides of a differential signal module is generally applied to a frequency range of 0-50GHz, the crosstalk of a signal pair is required to be less than-60 dB in the frequency range of 0-20GHz, and the crosstalk of the signal pair is required to be less than-55 dB in the frequency range of 20-30 GHz. In the following comparative examples and effect examples, both sides of each differential signal module are provided with shielding sheets, each differential signal module includes 3 pairs of signal pairs arranged at intervals, wherein the signal pair located at the most middle of the connector is to be affected by the surrounding signal pair, and performance simulations of each comparative example and effect example are performed for the most middle signal pair.

Comparative example 1: in this comparative example, ground pins are provided between adjacent signal pairs in the same differential signal module, and adjacent signal pairs in adjacent differential signal modules in three rows of differential signal modules are arranged directly opposite to each other in the arrangement direction of the differential signal modules, that is, l4=0. At this time, there is no connection between the ground pin and the shielding sheet between the signal pairs, the distance L0 between the adjacent signal pairs in the same module is 2mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.5mm, and the distance L2 between the two signal contacts in the signal pair is 3 times the line width W. As can be seen from fig. 49, in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is smaller than-55 dB, so that the use requirement of the high-speed connector can be satisfied. Wherein the abscissa in the figure is frequency, the ordinate is amplitude, PSXT represents the curve on the way as crosstalk sum.

Comparative example 2: the comparative example differs from comparative example 1 only in that the ground pin between the signal pair is connected to the shield plate in this comparative example. Referring to fig. 50, the performance chart is a performance chart of the signal pair with 8 attack pairs in the comparative example, and the graph shows that the crosstalk amplitude of the signal pair is less than-80 dB in the frequency range of 0GHz to 50GHz, so that the use requirement of the high-speed connector can be met.

Comparative example 3: the comparative example differs from comparative examples 1 and 2 only in that the comparative example directly removes the ground pin between adjacent signal pairs without any shielding between adjacent signal pairs. From fig. 51, it is clear that the crosstalk amplitude of the signal pair is as high as-20 dB in the frequency range of 0-50GHz, and the use requirement of the high-speed connector cannot be satisfied.

Comparative example 4: the comparative example differs from comparative example 3 only in that the vertical distance L1 of the shield plate to the signal contact in this comparative example is 0.3mm and the distance L2 between the two signal contacts in the signal pair is 1.4 times the stock thickness H. Fig. 52 shows that in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is as high as-35 dB, and the use requirement of the high-speed connector cannot be satisfied.

Comparative example 5: the comparative example differs from comparative example 3 only in that the spacing L0 between adjacent signal pairs in this comparative example is 4 mm, the vertical distance L1 of the shield plate to the signal contacts is 0.6mm, and the distance L2 between the two signal contacts in the signal pair is 1.4 times the material thickness H. From FIG. 53, it is clear that in the frequency range of 10G-30GHz, the crosstalk amplitude of the signal pair is as high as-20 dB, and the crosstalk is too large to meet the use requirement of the high-speed connector.

Comparative example 6, which differs from comparative example 3 only in that the perpendicular distance L1 of the shield plate to the signal contacts was 0.6mm and the distance L2 between the two signal contacts in the signal pair was 1.4 times the stock thickness H. As can be seen from fig. 54, in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is as high as-28 dB, and the crosstalk is too large to meet the use requirement of the high-speed connector.

Comparative example 7, which differs from comparative example 3 only in that the perpendicular distance L1 of the shield plate to the signal contact was 0.3mm. As can be seen from fig. 55, in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is as high as-25 dB, and the crosstalk is too large to meet the use requirement of the high-speed connector.

Comparative example 8, which differs from comparative example 3 only in that the spacing L0 between adjacent signal pairs is 4mm and the vertical distance L1 of the shield plate to the signal contact is 0.6mm. As can be seen from FIG. 56, in the frequency range of 0-50GHz, the signal pair suffers from crosstalk with an amplitude as high as-30 dB, and the crosstalk is too large to meet the use requirements of the high-speed connector.

As can be seen from the above comparative example, the conventional high-speed connector capable of meeting the use requirement cannot meet the use requirement after the ground pin is directly removed under the condition that other conditions are unchanged, that is, the ground pin of the conventional high-speed connector is directly removed, the use requirement of the high-speed connector cannot be met, and the use requirement cannot be met for the needleless high-speed connector in which any one of L0, L1 and L2 is not within the limit range of the present invention.

Effect example 1: the difference between this effect example and comparative example 3 is that: the distance L0 between adjacent signal pairs in the same module is 3mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.4mm, and the distance L2 between the two signal contacts in the signal pair is 1.4 times the material thickness H. As can be seen from fig. 57, in the frequency range of 0-20GHz, the signal pair receives crosstalk with an amplitude smaller than-60 dB, and in the frequency range of 20-30GHz, the signal pair receives crosstalk with an amplitude smaller than-55 dB, so that the use requirement of the existing high-speed connector can be satisfied.

Effect example 2: the difference between this effect example and comparative example 3 is that: the spacing L0 between adjacent signal pairs in the same module is 4mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.2mm, and the distance L2 between the two signal contacts in the signal pair is 2 times of the line width W. As can be seen from FIG. 58, the signal pair is less than-60 dB in cross-talk in the frequency range of 0-50GHz, which can meet the use requirements of the conventional high-speed connector.

Effect example 3: the difference between this effect example and comparative example 3 is that: the distance L0 between adjacent signal pairs in the same module is 4mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.3mm, and the distance L2 between the two signal contacts in the signal pair is the material thickness H. As can be seen from fig. 59, in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is less than-65 dB, so that the use requirement of the existing high-speed connector can be satisfied.

Effect example 4: the difference between this effect example and comparative example 3 is that: the spacing L0 between adjacent signal pairs in the same module is 4.5mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.3mm, and the distance L2 between the two signal contacts in the signal pair is 1.4H. As can be seen from FIG. 60, the signal pair has a crosstalk amplitude of less than-65 dB in the frequency range of 0-50GHz, which can meet the use requirements of the conventional high-speed connector.

Effect example 5: the difference between this effect example and comparative example 3 is that: the distance L0 between adjacent signal pairs in the same module is 4mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.3mm, and the distance L2 between the two signal contacts in the signal pair is 1.4H. As can be seen from FIG. 61, the signal pair receives crosstalk with a magnitude less than-68 dB in the frequency range of 0-50GHz, which can meet the use requirements of the existing high-speed connector.

Effect example 6: the difference between this effect example and comparative example 5 is that: as shown in fig. 62, in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is smaller than-78 dB, which can meet the use requirement of the existing high-speed connector, and the crosstalk amplitude of the whole frequency band of the present embodiment is smaller than that of the embodiment 5, so that the performance is better.

Effect example 7: the effect example differs from comparative example 5 only in that: the offset distance l4=1.25 mm, and fig. 63 shows that the signal pair receives crosstalk with a magnitude smaller than-85 dB in the frequency range of 0-50GHz, and the performance is better.

Effect example 8: the difference between this effect example and comparative example 5 is that: the staggering distance l4=1.5mm, as can be seen from fig. 64, in the frequency range of 0-50GHz, the crosstalk amplitude of the signal pair is less than-85 dB, so that the use requirement of the existing high-speed connector can be met, and the crosstalk amplitude of the whole frequency band of the present embodiment is less than that of the embodiment 5, so that the performance is better.

As is apparent from the above comparative examples and effect examples, the conventional high-speed connector with shields at both sides directly removes the ground pin, but the design of the high-speed connector according to the present invention, in which the ground pin is removed, overcomes the technical bias in the field of high-speed connectors, and simultaneously limits L1, L2 and L0 to a specific range by removing the ground pin in the conventional connector, so that the high-speed connector can meet the use requirement. The high-speed connector in which only one side of the differential signal module is provided with a shielding plate is generally applied to a frequency range of 0-15GHz, and crosstalk of signal pairs in the frequency range is required to be less than-45 dB. In the following comparative examples and effect examples, each differential signal module is provided with a shield sheet on only one side thereof, each differential signal module includes 3 pairs of signal pairs arranged at intervals, and performance simulations of each comparative example and effect example are performed for the most intermediate signal pair.

Comparative example 1: in this comparative example, ground pins are provided between adjacent signal pairs in the same differential signal module, and adjacent signal pairs in adjacent differential signal modules in three rows of differential signal modules are arranged directly opposite to each other in the arrangement direction of the differential signal modules, that is, l4=0. At this time, there is no connection between the ground pin and the shielding sheet between the signal pairs, the distance L0 between the adjacent signal pairs in the same module is 2mm, the vertical distance L1 between the shielding sheet and the signal contact is 0.5mm, and the distance L2 between the two signal contacts in the signal pair is 3 times the line width W. As can be seen from fig. 65, in the frequency range of 0-15GHz, the crosstalk amplitude of the signal pair is smaller than-45 dB, so that the use requirement of the high-speed connector can be satisfied.

Comparative example 2: the comparative example differs from comparative example 1 in that: ground pins between the signal pairs are connected with the shielding plates. As can be seen from fig. 66, in the frequency range of 0-15GHz, the crosstalk amplitude of the signal pair is less than-45 dB, so that the use requirement of the high-speed connector can be satisfied.

Comparative example 3: the comparative example differs from comparative example 1 and comparative example 2 in that: as shown in fig. 67, the crosstalk amplitude of the signal pair is greater than-20 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be satisfied.

Comparative example 4: the comparative example differs from comparative example 3 in that: as shown in FIG. 68, the crosstalk amplitude of the signal pair is larger than-30 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be met.

Comparative example 5: the comparative example differs from comparative example 3 in that: as can be seen from FIG. 69, the crosstalk amplitude of the signal pair is greater than-45 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be met.

Comparative example 6: the comparative example differs from comparative example 3 in that: as can be seen from FIG. 70, the crosstalk amplitude of the signal pair is greater than-40 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be met.

Comparative example 7: the comparative example differs from comparative example 3 in that: as can be seen from FIG. 71, the crosstalk amplitude of the signal pair is greater than-30 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be met.

Comparative example 8: the comparative example differs from comparative example 3 in that: as can be seen from FIG. 72, the crosstalk amplitude of the signal pair is greater than-20 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be met.

Comparative example 9: the comparative example differs from comparative example 3 in that: as can be seen from FIG. 73, the crosstalk amplitude of the signal pair is greater than-30 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector cannot be met.

Effect example 1: the difference between this effect example and comparative example 3 is that: as shown in FIG. 74, the crosstalk amplitude of the signal pair is smaller than-45 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector can be met.

Effect example 2: the difference between this effect example and comparative example 3 is that: as can be seen from FIG. 75, the crosstalk amplitude of the signal pair is smaller than-50 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector can be met.

Effect example 3: the difference between this effect example and comparative example 3 is that: as shown in FIG. 76, the crosstalk amplitude of the signal pair is smaller than-50 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector can be met.

Effect example 4: the difference between this effect example and comparative example 3 is that: as can be seen from FIG. 77, the crosstalk amplitude of the signal pair is smaller than-55 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector can be met.

Effect example 5: the difference between this effect example and comparative example 3 is that: as shown in FIG. 78, the crosstalk amplitude of the signal pair is smaller than-48 dB in the frequency range of 0-15GHz, and the use requirement of the high-speed connector can be met.

Effect example 6: the difference between this effect example and comparative example 5 is that: adjacent signal pairs in adjacent differential signal modules are arranged in staggered pairs in the arrangement direction of the differential signal modules, and the staggered distance L4=1 mm, as can be seen from fig. 79, in the frequency range of 0-15GHz, the crosstalk amplitude of the signal pairs is smaller than-55 dB, so that the use requirement of the high-speed connector can be met.

Effect example 7: the difference between this effect example and comparative example 5 is that: as shown in fig. 80, the offset distance l4=1.25mm, and the crosstalk amplitude of the signal pair is smaller than-55 dB in the frequency range of 0-15GHz, so that the use requirement of the high-speed connector can be satisfied.

Effect example 8: the difference between this effect example and comparative example 5 is that: as shown in fig. 79, the offset distance l4=1.5 mm is smaller than-55 dB in the frequency range of 0 to 15GHz, and the signal pair crosstalk amplitude is smaller than-55 dB, so that the use requirement of the high-speed connector can be satisfied.

As is apparent from the above comparative examples and effect examples, the conventional high-speed connector with the shielding sheet provided at one side of the module cannot meet the use requirement by directly removing the ground pin, but the design of the high-speed connector according to the present invention, in which the ground pin is removed, overcomes the technical bias in the field of high-speed connectors, and simultaneously limits L1, L2 and L0 to a specific range by removing the ground pin in the conventional connector, so that the high-speed connector can meet the use requirement.

The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. Differential signal connector comprising a housing (1) and at least two differential signal modules (2) fitted in the housing (1), characterized in that the differential signal modules (2) comprise:

A module insulator (21);

At least two spaced apart signal pairs (22);

the shielding sheet (23) is positioned on the vertical side of the arrangement direction of the module insulator (21) and the signal pair (22) and is used for shielding the signal pair (22) of the adjacent differential signal module;

The adjacent signal pairs (22) of the same differential signal module (2) are in a shielding structure between the plug-in end contacts;

The distance between adjacent signal pairs (22) is L0, the distance between two signal contacts (221) forming one signal pair (22) is L2, the vertical distance between the shielding sheet and the signal contacts (221) is L1, L1 is more than or equal to 0.2mm and less than or equal to 0.4mm, L0 is more than or equal to 3mm and less than or equal to 4.5mm, and the material thickness of the signal contacts is less than or equal to L2 and less than or equal to 2 times the material width of the signal contacts.

2. Differential signal connector according to claim 1, characterized in that the signal pairs (22) of at least one differential signal module (2) are provided with shielding plates (23) on both opposite sides perpendicular to the arrangement direction or that the signal pairs (22) of at least one differential signal module (2) are provided with shielding plates (23) on only one of the sides perpendicular to the arrangement direction.

3. The differential signal connector according to claim 2, wherein: there is no medium between at least one pair of adjacent differential signal modules (2), and contacts at the crimping ends of adjacent signal pairs (22) in at least one differential signal module (2) tilt towards different sides of the module.

4. The differential signal connector according to claim 2, wherein: there is no medium between at least one pair of adjacent differential signal modules (2), and adjacent signal pairs (22) in at least one pair of adjacent differential signal modules (2) are staggered in the arrangement direction of the differential signal modules.

5. The differential signal connector according to claim 2, wherein: adjacent signal pairs (22) in at least one pair of adjacent differential signal modules (2) are staggered in the arrangement direction of the differential signal modules, and contacts at crimping ends of the adjacent signal pairs (22) in at least one differential signal module (2) tilt towards different sides of the module.

6. The differential signal connector according to claim 2, wherein: an insulating or conductive shielding inter-sheet medium (3) is arranged between at least one pair of adjacent differential signal modules (2), and adjacent signal pairs (22) in the at least one pair of adjacent differential signal modules (2) are staggered in the arrangement direction of the differential signal modules.

7. The differential signal connector according to claim 2, wherein: an insulating or conducting shielding inter-sheet medium (3) is arranged between at least one pair of adjacent differential signal modules (2), and contacts at crimping ends of adjacent signal pairs (22) in at least one differential signal module (2) tilt towards different sides of the module.

8. The differential signal connector according to claim 4, wherein: the staggered distance between the staggered signal pairs in the adjacent differential signal modules is 1mm-1.5mm.

9. The differential signal connector according to claim 7, wherein: the conductive contact surfaces (2211) of the crimp end contacts of adjacent signal pairs (22) in at least one differential signal module (2) are oppositely oriented.