CN110112594A - A kind of high-speed signal connector, server system and server - Google Patents
A kind of high-speed signal connector, server system and server Download PDFInfo
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- CN110112594A CN110112594A CN201910380259.6A CN201910380259A CN110112594A CN 110112594 A CN110112594 A CN 110112594A CN 201910380259 A CN201910380259 A CN 201910380259A CN 110112594 A CN110112594 A CN 110112594A
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- differential pairs
- speed signal
- signal connector
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- 230000008054 signal transmission Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000011664 signaling Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000004088 simulation Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/06—Connectors or connections adapted for particular applications for computer periphery
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a kind of high-speed signal connector, server system and server, which includes default differential pairs pins, further includes: default GND pin;Wherein, each pair of default differential pairs pins respectively correspond to two default GND pins that both sides is arranged in, each pair of default GND pin of corresponding two of the default differential pairs pins, which merges, to be connected, to inhibit the high-frequency noise of differential signal in corresponding default differential pairs pins;The present invention is connected by merging the default GND pin for presetting differential pairs pins both sides in high-speed signal connector, default GND pin is strengthened to the high-frequency noise rejection ability of differential signal in default differential pairs pins, improve structure size space it is smaller when high-speed signal connector in cross talk effects between each default differential pairs pins, reduce influence of the crosstalk noise to differential signal amplitude, high speed signaling quality when improving high speed transmission of signals, at high-speed signal connector.
Description
Technical field
The present invention relates to server technology field, in particular to a kind of high-speed signal connector, server system and service
Device.
Background technique
In server (Server) product system design, whole server system has mainboard and multiple attached daughter board interconnection
Cascade between combination and other each boards, substantially with connector (connector) directly to even or through cable
(cable) it interconnects, in short, necessarily having connector apparatus presence between the cascade of each board.However, when high speed signal cabling is through connecting
When device interconnecting transfer, high-frequency signal quality can be influenced because of the factors such as connector insertion loss itself and coupling crosstalk noise.Especially
It, when connector structure size space relative narrower itself, high speed signal can generate biggish crosstalk noise at connector
It influences, these noise energy can aggravate signal voltage amplitude reduction, and signal elevating time is elongated.To cause signal edge to be trembled
Dynamic (Jitter) increases, and improves signal in the receiving terminal acquisition bit error rate, influences signal integrity property amount.
It is each except being promoted to improve the high speed signaling quality when cascade of each board system in the exploitation of current server product
Board signal itself transmits outside Electrical Indexes, and various aspects, which have also been made, to connector (high-speed signal connector) electrical property itself improves
It is promoted, by tin plating is changed to silver-plated mode if connector signal interconnection pin is surface-treated, using the better gummy model of electrical property
The modes such as material reduce transmission loss of the signal at connector, and then promote signal matter of the high speed signal at connector
Amount.
Using above-mentioned existing scheme, although influence of connector transmission loss to high speed signal itself can be reduced, by
In using better material and improving technique, necessarily make the promotion of connector development cost, meanwhile, because connector will tend to
In small scale structures and support higher speed signal rate, if the direction of 25Gbps or more rate is developed, connector inner high speed letter
Compared with can aggravate to become larger, the increase of such noise noise, which can reduce to improve by existing scheme, promotes connector for cross talk effects between number
The effect of Electrical Indexes.Therefore, high speed letter when how to improve high speed transmission of signals, at high-speed signal connector
Number quality is urgent problem now.
Summary of the invention
The object of the present invention is to provide a kind of high-speed signal connector, server system and servers, to reinforce GND pin
High speed letter to the high-frequency noise rejection ability of differential signal, when promoting high speed transmission of signals, at high-speed signal connector
Number quality.
In order to solve the above technical problems, the present invention provides a kind of high-speed signal connector, including default differential pairs pins, also
Include:
Default GND pin;Wherein, respectively the default of both sides is arranged in for corresponding two in each pair of default differential pairs pins
GND pin, each pair of default GND pin of corresponding two of default differential pairs pins, which merges, to be connected, to inhibit corresponding
The high-frequency noise of differential signal in default differential pairs pins.
Optionally, the end of each pair of default corresponding two default GND pins of differential pairs pins, which merges, is connected.
Optionally, all the default GND pin merging is connected.
Optionally, whole GND pins in the high-speed signal connector, which merge, is connected.
The present invention also provides a kind of server systems, comprising: the first board, the second board and as described in any of the above-described
High-speed signal connector;
Wherein, first board is connected with second board by the high-speed signal connector.
In addition, the present invention also provides a kind of servers, comprising: the server system as described in the next item up.
A kind of high-speed signal connector provided by the present invention, including default differential pairs pins, further includes: default GND draws
Foot;Wherein, each pair of default differential pairs pins respectively correspond to two default GND pins that both sides is arranged in, each pair of described pre-
It is connected if differential pairs pins corresponding two default GND pins merge, to inhibit poor in corresponding default differential pairs pins
The high-frequency noise of sub-signal;
As it can be seen that the present invention is by merging the default GND pin for presetting differential pairs pins both sides in high-speed signal connector
It is connected, strengthens default GND pin to the high-frequency noise rejection ability of differential signal in default differential pairs pins, improve structure
Cross talk effects when dimensional space is smaller in high-speed signal connector between each default differential pairs pins reduce crosstalk noise to difference
The influence of sub-signal amplitude, high speed signaling quality when improving high speed transmission of signals, at high-speed signal connector.This
Outside, the present invention also provides a kind of server system and servers, equally have above-mentioned beneficial effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of high-speed signal connector provided by the embodiment of the present invention;
Fig. 2 is the simulation model figure of pin portions in SAS3.0 connector in the prior art;
Fig. 3 is the waveform diagram of the corresponding frequency domain insertion loss emulation of Fig. 2 structure;
Fig. 4 is the waveform diagram of the corresponding frequency domain near-end cross noise Simulation of Fig. 2 structure;
Fig. 5 is the waveform diagram of the corresponding time domain eye emulation of Fig. 2 structure;
Fig. 6 is the simulation model figure of pin portions in a kind of SAS3.0 connector provided by the embodiment of the present invention;
Fig. 7 is the waveform diagram of the corresponding frequency domain insertion loss emulation of Fig. 6 structure;
Fig. 8 is the waveform diagram of the corresponding frequency domain near-end cross noise Simulation of Fig. 6 structure;
Fig. 9 is the waveform diagram of the corresponding time domain eye emulation of Fig. 6 structure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of high-speed signal connector provided by the embodiment of the present invention, it should
High-speed signal connector may include: including preset differential pairs pins 10, can also include:
Default GND pin 1111;Wherein, respectively both sides is arranged in for corresponding two in each pair of default differential pairs pins 10
Default GND pin 11, each pair of default GND pin 11 of default differential pairs pins 10 corresponding two, which merges, to be connected, with
Inhibit the high-frequency noise of differential signal in corresponding default differential pairs pins 10.
It is understood that high-speed signal connector provided by the present embodiment can be the company that can transmit high speed signal
Device is connect, i.e. high speed signal cabling in server between each board can be through high-speed signal connector interconnecting transfer.The present embodiment
In default differential pairs pins 10 differential pairs pins for merging connected GND pin can be provided with for both sides, such as can be to Fig. 2
In two GND pins being independently distributed of a pair of of differential pairs pins both sides merge adjacent processing, this draws differential pair
Foot is as a pair of default differential pairs pins 10.
Specifically, default differential pairs pins 10 in this present embodiment are specifically arranged, as pre- in high-speed signal connector
If quantity and the position of differential pairs pins 10, such as can may be used by designer according to practical scene and user demand self-setting
By using with differential pairs pins in the prior art setting it is the same or similar in a manner of realize, the present embodiment does not do any limit to this
System.
It should be noted that it can be setting in corresponding default difference that each of the present embodiment, which presets GND pin 11,
It is connected to a GND pin on 10 one side of pin, and with the GND pin merging for presetting 10 another side of differential pairs pins, i.e., often
Default GND pin 11 merging adjacent with the other side of adjacent default differential pairs pins 10 of a default GND pin 11 is connected.Such as
Adjacent processing can be merged to two GND pins being independently distributed of a pair of of differential pairs pins both sides in Fig. 2, this is right
The two GND pins are preset differential pairs pins 10 as this and corresponded to by differential pairs pins as a pair of default differential pairs pins 10
Two default GND pins 11.
Specifically, the specific setting to default GND pin 11 in this present embodiment, as preset in high-speed signal connector
The quantity of GND pin 11 and position can such as pass through by designer according to practical scene and user demand self-setting
Adjacent is merged to two GND pins being independently distributed by prior art setting of default 10 both sides of differential pairs pins
Reason, sets two default GND pins 11 for two GND pins of default 10 both sides of differential pairs pins.As long as guaranteeing each pair of pre-
If an adjacent default GND pin 11, and two default merging of GND pins 11 that both sides is adjacent are distinguished in 10 both sides of differential pairs pins
It is connected, the present embodiment does not do any restrictions to this.
Wherein, the purpose of the present embodiment can be for by by the default GND pin of each pair of default 10 both sides of differential pairs pins
11 merging are connected, and default GND pin 11 is allow to inhibit the high-frequency noise of differential signal in corresponding default differential pairs pins 10,
To promote the crosstalk shields ability of the coupled noise between default differential pairs pins 10.Specifically, for each pair of default difference
To the specific merging connection type of 10 corresponding two default GND pins 11 of pin, such as each pair of default differential pairs pins 10 are corresponding
Two default GND pins 11 merging link position, can voluntarily be set by designer according to practical scene and user demand
It sets, the end of each pair of 10 corresponding two default GND pins 11 of default differential pairs pins can such as be merged and be connected, such as schemed
Shown in 6, two GND pins being independently distributed of the differential pairs pins both sides in Fig. 2 can be used to connect with corresponding board
End merge be connected.As long as can guarantee each pair of 10 corresponding two default GND pins 11 of default differential pairs pins of setting
It can inhibit the high-frequency noise of differential signal in corresponding default differential pairs pins 10, the present embodiment does not do any restrictions to this.
It is corresponding, it, can for the specific connection type of the default GND pin 11 in the present embodiment high speed signal connector
Such as only each pair of 10 corresponding two default GND pins 11 of default differential pairs pins can be closed by designer's self-setting
And it connects;The common merging of the multipair default corresponding more than two default GND pins 11 of differential pairs pins 10 can also be connected,
The corresponding whole of differential pairs pins 10 such as will can be all preset in high-speed signal connector presets the merging connection of GND pin 11,
All default merging of GND pin 11 are made to be connected;Directly whole GND pins in high-speed signal connector can also be merged and be connected
It connects, merges the default GND pin 11 in high-speed signal connector with other GND pins and be connected, reduce the work of designer
It measures, is connected as shown in fig. 6, the end of whole GND pins in high-speed signal connector merges.As long as guaranteeing that high speed signal connects
It connects the default merging of GND pin 11 of each pair of default differential pairs pins 10 corresponding two in device to be connected, the present embodiment does not do this
Any restrictions.
It should be noted that the advantages of in order to show high-speed signal connector provided by the present embodiment, with shown in Fig. 2
For SAS3.0 connector model in the prior art, since GND pin each in Fig. 2 is mutually contradictory to be distributed in differential pairs pins
Both sides, because GND pin is relatively independent, the crosstalk noise that cannot preferably shield between differential pairs pins influences;Such as Fig. 3 and Fig. 4
Shown, carry out simulation in the frequency-domain analysis to SAS3.0 connector model and can be found that: 1) there are non-linear for frequency domain insertion loss waveform
Resonance point, it may appear that differential mode turns common mode problem, causes differential signal amplitude reduction, and common mode EMI (electromagnetic interference) radiation energy increases
By force;2) near-end cross frequency-domain waveform, in 6GHz frequency range, noise amplitude exceeds SAS3.0 code requirement value;Wherein,
Magnitude is amplitude, and frequency is frequency, and Retun Loss is return loss, and Insertion Loss is insertion damage
Consumption, Receptacle Side are connector receiving end, i.e. female, and Plug Side is connector transmitting terminal, i.e. male connector, SAS3.0
12Gbps Spec is SAS3.0 connector 12Gbps specification.
It is corresponding, as shown in fig. 6, the present embodiment can be all independently distributed in SAS3.0 shown in Fig. 2 GND pin into
Row merges the Optimal improvements that are connected, and reinforces GND pin to the crosstalk shields ability of the mutual coupled noise of each differential lines with this, right
Improved simulation modeling shown in fig. 6 carries out simulation analysis, and simulation in the frequency-domain waveform is as shown in Figure 7 and Figure 8 after improving, and can
Such as drawn a conclusion: 1) frequency domain insertion loss waveform is linear change, and resonance free point exists, differential mode is greatly reduced and turns common mode wind
Danger promotes differential mode energy amplitude;2) frequency domain near-end cross noise waveform amplitude meets within the scope of SAS3.0 specification limit, letter
Number control index meet design requirement.Further, front and back, expansion time domain eye emulation point are improved for SAS3.0 connector
Analysis before connector improves, inhibits the crosstalk noise between differential pair that intercouples because being independently distributed GND pin as shown in figs. 5 and 9
Ability is limited, and it is larger (position in Fig. 5 circle) that time domain artificial eye figure (eye diagram) shakes (jitter), and each GND is drawn
Foot merges be connected after, the shake of improved time-domain-simulation eye figure, which has, significantly to become smaller improvement (position in Fig. 9 circle), eye
High-amplitude is also promoted therewith.Thus, effectively improve high-frequency signal SI (Signal Integrity, signal integrity) transmission
Quality.
In the present embodiment, the embodiment of the present invention is by will preset the pre- of 10 both sides of differential pairs pins in high-speed signal connector
It is connected if GND pin 11 merges, strengthens default GND pin 11 to the high-frequency noise of differential signal in default differential pairs pins 10
Rejection ability, improve structure size space it is smaller when high-speed signal connector in crosstalk shadow between each default differential pairs pins 10
It rings, influence of the crosstalk noise to differential signal amplitude is reduced, when improving high speed transmission of signals, by way of high-speed signal connector
The high speed signaling quality at place.
The embodiment of the invention also provides a kind of server systems, comprising: the first board, the second board and as above one implement
High-speed signal connector provided by example;
Wherein, the first board and the second board are connected by high-speed signal connector.
Specifically, the first board and the second board can also pass through height by high-speed signal connector directly to even
Fast signal connector is connected through cable, and the present embodiment does not do any restrictions to this.
In addition, the embodiment of the invention also provides a kind of servers, comprising: the server system as provided by above-described embodiment
System.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For server disclosed in embodiment
For system and server, since it is corresponding with high-speed signal connector disclosed in embodiment, so be described relatively simple,
Related place illustrates referring to high-speed signal connector part.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Detailed Jie has been carried out to a kind of high-speed signal connector provided by the present invention, server system and server above
It continues.Used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only
It is to be used to help understand method and its core concept of the invention.It should be pointed out that for those skilled in the art
For, it without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention, these improve and repair
Decorations are also fallen within the protection scope of the claims of the present invention.
Claims (6)
1. a kind of high-speed signal connector, including default differential pairs pins, which is characterized in that further include:
Default GND pin;Wherein, each pair of default differential pairs pins respectively correspond to two default GND that both sides is arranged in and draw
Foot, each pair of default GND pin of corresponding two of default differential pairs pins, which merges, to be connected, to inhibit corresponding default difference
Divide the high-frequency noise to differential signal in pin.
2. high-speed signal connector according to claim 1, which is characterized in that each pair of default differential pairs pins are respectively
The end of corresponding two default GND pins, which merges, to be connected.
3. high-speed signal connector according to claim 1 or 2, which is characterized in that all the default GND pin merges
It is connected.
4. high-speed signal connector according to claim 3, which is characterized in that the whole in the high-speed signal connector
GND pin, which merges, to be connected.
5. a kind of server system characterized by comprising the first board, the second board and any one of such as Claims 1-4
The high-speed signal connector;
Wherein, first board is connected with second board by the high-speed signal connector.
6. a kind of server characterized by comprising server system as claimed in claim 5.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN201910380259.6A CN110112594A (en) | 2019-05-08 | 2019-05-08 | A kind of high-speed signal connector, server system and server |
PCT/CN2019/098534 WO2020224066A1 (en) | 2019-05-08 | 2019-07-31 | High-speed signal connector, server system, and server |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910380259.6A CN110112594A (en) | 2019-05-08 | 2019-05-08 | A kind of high-speed signal connector, server system and server |
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CN110112594A true CN110112594A (en) | 2019-08-09 |
Family
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CN201910380259.6A Pending CN110112594A (en) | 2019-05-08 | 2019-05-08 | A kind of high-speed signal connector, server system and server |
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WO (1) | WO2020224066A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112636853A (en) * | 2020-12-25 | 2021-04-09 | 无锡市同步电子科技有限公司 | Method for analyzing high-speed channel through differential signal modal conversion |
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CN202076606U (en) * | 2011-05-03 | 2011-12-14 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
CN103560360A (en) * | 2011-04-20 | 2014-02-05 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
CN106793457A (en) * | 2016-12-15 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of attachment means and preparation method thereof |
US20170271806A1 (en) * | 2016-03-15 | 2017-09-21 | Aces Electronics Co., Ltd. | Plug unit and receptacle unit |
CN109586107A (en) * | 2017-09-29 | 2019-04-05 | 中航光电科技股份有限公司 | A kind of connector and its signal transmission structure |
-
2019
- 2019-05-08 CN CN201910380259.6A patent/CN110112594A/en active Pending
- 2019-07-31 WO PCT/CN2019/098534 patent/WO2020224066A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103560360A (en) * | 2011-04-20 | 2014-02-05 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
CN202076606U (en) * | 2011-05-03 | 2011-12-14 | 富士康(昆山)电脑接插件有限公司 | Electric connector |
US20170271806A1 (en) * | 2016-03-15 | 2017-09-21 | Aces Electronics Co., Ltd. | Plug unit and receptacle unit |
CN106793457A (en) * | 2016-12-15 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of attachment means and preparation method thereof |
CN109586107A (en) * | 2017-09-29 | 2019-04-05 | 中航光电科技股份有限公司 | A kind of connector and its signal transmission structure |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112636853A (en) * | 2020-12-25 | 2021-04-09 | 无锡市同步电子科技有限公司 | Method for analyzing high-speed channel through differential signal modal conversion |
CN112636853B (en) * | 2020-12-25 | 2022-09-06 | 无锡市同步电子科技有限公司 | Method for analyzing high-speed channel through differential signal modal conversion |
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