EP1413014B1 - Impedanzabgestimmter verbinder mit hoher dichte - Google Patents

Impedanzabgestimmter verbinder mit hoher dichte Download PDF

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Publication number
EP1413014B1
EP1413014B1 EP02759087A EP02759087A EP1413014B1 EP 1413014 B1 EP1413014 B1 EP 1413014B1 EP 02759087 A EP02759087 A EP 02759087A EP 02759087 A EP02759087 A EP 02759087A EP 1413014 B1 EP1413014 B1 EP 1413014B1
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EP
European Patent Office
Prior art keywords
connector
terminals
terminal
distinct
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02759087A
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English (en)
French (fr)
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EP1413014A2 (de
Inventor
Galen Fromm
David L. Brunker
Daniel L. Dawiedczyk
John E. Lopata
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Molex LLC
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Molex LLC
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Publication of EP1413014A2 publication Critical patent/EP1413014A2/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
    • 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
    • H01R13/6473—Impedance matching
    • H01R13/6477—Impedance matching by variation of dielectric properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB

Definitions

  • the present invention relates generally to connectors used in connections with signal cables, especially high-speed signal cables, and printed circuit boards and more particularly to high density connectors having selected impedances.
  • These signal cables may use one or more twisted pairs of wires that are twisted together along the length of the cable, and each such pair being encircled by an associated grounding shield.
  • One wire of the pair may see a +1.0 volt signal, and the other wire of the pair may see a -1.0 volt signal and thus, these wires are called "differential" pairs, a term that refers to the differential, i.e., opposing and balanced signals they carry.
  • Such a twisted pair construction minimizes or diminishes any induced electrical fields form other electronic devices and thereby eliminates electromagnetic interference.
  • WO 01/06602A discloses an electrical connector comprising a housing which holds a plurality of conductive terminals, the terminals having contact portions adapted for mating to contact portions of opposing terminals of a mating connector, the terminals including at least first and second distinct sets of terminals, each distinct set of terminals including a pair of differential signal contact portions and an associated ground contact portion. Each distinct set of terminals is arranged in a triangular pattern through the connector in order to reduce the impedance through the connector.
  • the present invention is therefore directed to a termination structure for providing improved, high-density connections between cables and connectors that provide a high level of performance and which maintains the electrical characteristics of the cable through the mating interface between the cable and device connector in the termination area.
  • Another object of the present invention is to provide an improved connector for effecting a high-performance connection between a circuit board and an opposing connector terminated to a transmission line, wherein the transmission line includes multiple pairs of differential signal wires, each such pair having an associated ground, the connector having pairs of signal terminals and ground terminals associated therewith arranged in triangular fashions so as to reduce impedance discontinuities from occurring when the connector is mated to the opposing connector and further, by inverting adjacent triangular associated sets of signal and ground terminals, the connector is given a high density characteristic while maintaining a desired preselected impedance through the connector.
  • Yet another object of the present invention is to provide a connector for high-density applications wherein the connector has a plurality of terminal triads which are triangular arrangements of two signal and one ground terminals spaced apart from each other so as to enhance coupling among the three terminals, the ground terminals being located at the apex of each triangular arrangement, the connector having at least two such triads, with one triad being inverted with respect to the other triad.
  • a still other object of the present invention is to provide a high-density connector having a housing formed from a dielectric material, the housing having a plurality of cavities disposed therein, each such cavity including a conductive terminal, the housing cavities being arranged in triangular sets within the connector and each such triangular set including a pair of signal terminals and one ground terminal, adjacent triangular sets being inverted with respect to each other, the housing further including recesses formed therein that extend between adjacent triangular sets to provide an air gap having a dielectric constant different than that of the connector housing.
  • a still further object of the present invention is to provide a connector having a plurality of terminals grouped in sets of three, each set including two signal terminals and one ground terminal, the terminals of each set being arranged in a triangular fashion and disposed at respective apexes of the triangles, the space between each such set of terminals being filled with a first dielectric material to form a terminal "module" that is inserted into cavities of the connector housing and which is supported by the connector housing, the connector housing being formed from a second dielectric material.
  • Yet still another object of the present invention is to provide an improved high-density connector with controlled impedance for connecting multi-channel transmission lines to electronic devices
  • the connector including a housing formed from an electrically insulative material, a plurality of conductive terminals supported by the housing, the terminals including at least two sets of three distinct terminals, each set accommodating a distinct channel in the transmission line and each terminal set including two differential signal terminals and one associated ground terminal, the three terminals of each set being disposed at corners of an imaginary triangle and the imaginary triangles of each terminal set being inverted with respect to each other, each terminal set further being supported on a carrier formed of an insulative material having a first dielectric constant, each such carrier being received within a cavity formed in the connector housing, each terminal set being separated from each other by recesses formed in the connector housing that define air gaps between the terminal sets.
  • one principal aspect of the invention that is exemplified by one embodiment thereof includes a first connector for a circuit board which has a housing that supports, for each twisted pair of wires in the mating signal cable, three conductive terminals in a unique pattern of a triplet, with two of the tenninals carrying differential signals, and the remaining terminal being a ground terminal that serves as a ground plane or ground return to the differential pair of signal wires.
  • the first connector supports multiple terminal triplets, in an inverted fashion (widthwise along the connector mating face) so that two rows of terminals are defined in the first connector, the signal terminals of a first triplet are disposed in one row in the connector and the ground terminal of that first triplet is disposed in the other row of the connector, while the signal terminals of a second, or of adjacent triplets, are disposed in the other row of the connector and the ground terminal of this second triplet or of two adjacent triplets are disposed in the one row of the connector.
  • the signal and ground terminals of adjacent triplets are arranged in an inverted fashion.
  • a second connector for a cable is provided that mates with the first connector and their second connector has multiple terminal triplets arranged to mate with their corresponding terminal triplets of the first connector.
  • each such triplet of the first connector includes a pair of signal terminals having contact portions that are aligned together in side-by-side order, and which are also spaced apart a predetermined distance from each other.
  • the ground terminal is spaced apart from the two signal terminals in a second row.
  • the width of the ground terminals and their spacings from the signal terminals of each such triplet may be chosen so that the three terminals may have desired electrical characteristics such as capacitance and the like, all of which will affect the impedance of the connector.
  • this aspect of the present invention may be aptly characterized as providing a "tunable" terminal arrangement for each differential signal wire pair and associated ground wire arrangement found either in a cable or in other circuits.
  • these tunable triplets are provided within the connector housing in an inverted fashion. That is, the ground terminals of adjacent terminal triplets lie in different terminal rows of the connector, as do the signal terminals in alternating fashion along the width of the connector.
  • other terminals of the connector such as power and reference terminals may be situated in the connector at a midpoint thereof between the terminal triplets.
  • the connector has each of its inverted triplets or triads (i.e., an associated set of two signal terminals and one ground terminal) arranged in a triangular orientation throughout their length within the connector housing in order to maintain a desired, predetermined spatial relationship among these three terminals within each triplet or triad.
  • inverted triplets or triads i.e., an associated set of two signal terminals and one ground terminal
  • the connector housing may be modified in certain ways to accommodate the arrangement of terminal triplets with the housing.
  • the housing may have openings in the form of recesses, slots or other similar cavities that are interposed between adjacent terminal triplets. The use of one or more such recesses introduces a slight air gap between the terminal triplets and because the dielectric constant of air differs from that of the connector housing material, it provides isolation between triplets and further enhances the affinity among the two differential signal terminals and the associated ground that make up each such triplet.
  • the terminal triplets are formed together as a single piece, in the form an insert or module, that is received within a corresponding opening formed in the connector housing.
  • the terminals of the triplets may be molded directly into the insert, or module, such as by insert or over molding and the molding material used to form a body portion of the triplet may be chosen to have a different dielectric constant from the dielectric constant of the connector housing so that the two dielectric constants differ from each other so that the dielectric constant of the connector housing may be chosen to maintain isolation between adjacent tenninal triplets and the dielectric constant of the triplet assembly may be chosen to enhance the affinity of the triplet terminals for each other.
  • the present invention is directed to an improved connector particularly useful in enhancing the performance of high-speed cables, particularly in input-output ("I/O") applications as well as other type of applications. More specifically, the present invention attempts to impose a measure of mechanical and electrical uniformity on the connector to facilitate its performance, both alone and when combined with an opposing connector.
  • peripheral devices associated with an electronic device such as a video camera or camcorder
  • Other devices associated with a computer such as the CPU portion thereof, operate at high speeds for data transmission.
  • High speed cables are used to connect these devices to the CPU or to connect the device and two or more CPUs together. Cables that are used in high speed data transmission applications typically will include differential pairs of signal wires, either as twisted pairs or individual pairs of wires.
  • Impedance mismatches in a transmission path can cause signal reflection, which often leads to signal losses, cancellation, etc. Accordingly, it is desirable to attempt to keep the impedance consistent over the signal path in order to maintain the integrity of the transmitted signals. It is not complicated to control the impedance of a transmission cable. However, the impedance of the connector to which the cable is terminated and the connector mounted on a circuit board of the device to which the cable connects, is usually not very well controlled insofar as impedance is concerned. It may vary greatly from that of the cable. A mismatch in impedances between these two elements may result in transmission errors, limited bandwidth and the like.
  • FIG. 15 illustrates the impedance discontinuity that occurs through a conventional plug and receptacle connector assembly used for signal cables.
  • the impedance through the signal cable approaches a constant, or baseline value, as shown to the right of FIG. 15 at 51. This deviation from the baseline is shown by the solid, bold line at 50.
  • the cable impedance substantially matches the impedance of the circuit board at 52 shown to the left of FIG. 11 and to the left of the "PCB Termination" axis.
  • That vertical axis "M” represents the point of termination between the socket, or receptacle, connector and the printed circuit board, while the vertical axis “N” represents the interface that occurs between the two mating plug and socket connectors, and the vertical axis “P” represents the point where the plug connector is terminated to the cable.
  • the curve 50 of FIG. 15 represents the typical impedance "variation” or “discontinuity” achieved with conventional connectors and indicates three peaks and valleys that occur, with each such peak or valley having respective distances (or values) H 1 , H 2 and H 3 from the baseline as shown. These distances are measured in ohms with the base of the vertical axis that intersects with the horizontal "Distance" axis having a zero (0) ohm value.
  • H 1 will typically increase to about 150 ohms
  • the low impedance as represented by H 2 will typically decrease to about 60 ohms. This wide discontinuity between H 1 and H 2 of about 90 ohms affects the electrical performance of the connectors with respect to the printed circuit board and the cable.
  • the present invention pertains to a high-density connector that is particularly useful in I/O (" input-output") applications which has a improved structure that permits the impedance of the connector to be set and thereby reduces the aforementioned discontinuity.
  • connectors of the present invention may be "tuned” through their design to improve the electrical performance of the connector.
  • FIG. 1 is a perspective view of a receptacle, or socket connector, 100 constructed in accordance with the principles of the present invention.
  • the connector 100 is seen to include an insulative connector housing 112 that is formed from a dielectric material, typically a plastic.
  • the connector housing 112 has two leaf, or arm portions 114a, 114b that extend out from a rear body portion 116 and which form part of a receptacle, or socket, of the connector. These housing leaf portions support a plurality of conductive terminals 119 as shown.
  • the lower leaf portion 114a may include a series of grooves, or slots 118 that are disposed therein and are adapted to receive selected ones of the conductive terminals 119 therein.
  • the upper leaf portion 114b likewise includes similar grooves 120 that correspondingly receive the remaining terminals 119 of the connector 110.
  • the connector may include a first shell, or shield, 123 that is formed from sheet metal having a body portion 124 that encircles the upper and lower leaf portions 114a, 114b of the body portion 116.
  • This first shield 123 may also preferably include foot portions 125 for mounting to a surface of a printed circuit board 102 and which provide a connection to a ground on the circuit board, although depending foot portions (not shown) may also be formed with the shield for use in through-hole mounting of the connector 100, although surface mounting applications are preferred.
  • a second shield 126 may also be included that encircles part of the connector housing 112, near the rear portion thereof, and which extends forwardly to encircle the body portion 124 of the first shield 123.
  • This second shield 126 may also utilize mounting feet 127 and utilize a rear flap that may be folded down over the rear of the connector housing 112, and which is secured in place by tabs 129 that are bent rearwardly over it.
  • FIG. 4 illustrates a plug connector 160 that is matable with the socket/receptacle connector 100 of FIG. 1.
  • one of the objects of the present invention is to provide a connector having an impedance that more closely resembles that of the system (such as the cable) impedance than is typically found in multi-circuit connectors.
  • the present invention accomplishes this by way of what shall be referred to herein as the arrangement of a plurality of associated terminals that are arranged in distinct corresponding sets, each set being referred to herein as a "triplet" or as a "triad,” which in its simplest sense is the arrangement of three distinct terminals. Examples of such triads, or triplets, are illustrated schematically in FIG. 6 wherein the terminals of each distinct set are shown interconnected together by imaginary, dashed lines, and the terminals being arranged at the respective apexes of each such imaginary triangle.
  • Each such a triplet involves two signal terminals, such as the two terminals 140, 141 illustrated in FIGS. 1, 3 and 6 and a single ground terminal 150 that are arranged to mate with corresponding terminals 161 of a plug connector 160 held on a plug portion 162 and which are terminated to the wires of a differential pair of wires of a cable (not shown) that carry the same strength signals but which are complements of each other, i.e., +1.0 volts and -1.0 volts.
  • a differential pair usually includes a ground reference.
  • the arrangement of associated terminal sets within the connector 100 is shown schematically in FIG. 6.
  • each terminal set has its two differential signal terminals and its ground reference terminal arranged in a triangular pattern, wherein each terminal may be considered, in one aspect as defining one apex of an imaginary triangle.
  • FIG. 6 illustrates six distinct terminal sets arranged widthwise of the connector, i.e., along the direction W, but in an inverted fashion.
  • the six terminal sets include the following distinct terminals: 140, 141 and 150; 142, 143 and 151; 144, 145 and 152; 146, 147 and 153; 148, 149 and 154; and, 240, 241 and 250.
  • Each such terminal set includes a pair of differential signal terminals, meaning that the terminals are connected to differential signal traces on a circuit board by way of terminal tails 180, and a single ground reference terminal.
  • the terminals all preferably each include a flat blade portion 181 that is used for a sliding contact, or mating, with opposing terminals 161 of the plug connector 160.
  • the ground terminal 150,151 of each triad is preferably wider than any single one of the associated signal terminals 140, 141 of the triad, and its width may exceed the combined width of the two signal terminals.
  • the terminals 180 also preferably include body portions 182 interconnecting the contact blade and tail portions 181, 180 together. With this design, the terminals 119 may be easily stamped and formed. The terminals 119 are received within corresponding slots 118 of the lower leaf 114a of the housing body portion 112 of the receptacle connector and the free ends of the contact blade portions 181 may be held in openings formed at the ends of the slots 118.
  • the plug connector preferably has a solid plug body portion 185 and the terminals are disposed on opposite surfaces of the plug body portion 185.
  • the plug body portion 185 may include a keyway that is adapted to receive a positive key 188 of the receptacle connector of FIG. 1.
  • the key and keyway may be interposed between at least a pair of distinct terminal triplet sets, as illustrated.
  • the benefits of the "triad" aspect will now be discussed with respect to a single associated terminal set, namely the terminal set shown at the left of FIG. 6 and including signal terminal 140, 141 (shown as S1 and S2 ) and ground terminal 150 ( G12 ).
  • the two signal terminals 140 and 141 may be considered in one sense, as arranged in a triangular fashion with respect to the ground terminal 150. They may also be considered in another sense as "flanking" the ground terminal inasmuch as portions of the signal terminals may extend to a point somewhat exterior of the side edges of the ground terminal 150.
  • the triangular relationship among these three associated terminals may vary and may include equilateral triangular relationships, isosceles triangular relationships, scalene triangular relationships and the like, with the only limitation being the desired width W of the connector 100.
  • the contact blade portions of the terminals 119 are cantilevered out from their respective body portions and therefore lie in different planes than the intermediate body portions.
  • the contact blade portions of the terminals in the two (top and bottom or upper and lower) rows are spaced apart from each other and also lie in different planes from each other.
  • Preferably the contact blade portions of each row are parallel to each other but it is understood that due to manufacturing tolerances and other manufacturing considerations, the two sets of contact blade portions may not be parallel to each other.
  • the associated adjacent terminals sets are "inverted" with respect to one another. This is most clearly shown in the plug connector shown in FIG. 6, where it can be seen that the ground terminals of alternating associated terminal sets, namely terminals 150 ( G12 ), 152 ( G56 ), 153 ( G78 ) and 250 ( G1112 ) lie along, or are supported on, one (the upper) leaf portion 114b of the connector housing 112 along with the signal terminals of intervening associated terminal sets, namely terminals 142, 143 ( S3 & S4 ), 148, 149 ( S9 & S10 ).
  • the signal terminals of the alternating associated terminal sets namely 140, 141 ( S1 & S2 ), 144, 145 ( S5 & S6 ), 146, 147 ( S7 & S8 ), and 240, 241 ( S11 & S12 ) and the ground terminals of the intervening associated terminals sets, namely 151 ( G34 ) and 154 ( G910 ) lie along, or are supported by the other, or lower, leaf portion 114a.
  • Other terminals such as power in and out terminal 170 and a terminal 171 reserved for other use, may be located on either the upper or lower leaf portion, as illustrated in FIG. 6, which may be considered as a schematic diagram of both the plug connector shown in FIG. 4 and the receptacle connector shown in FIG. 1.
  • a key member 173 may also be formed on one of the leaf portions to provide means for keying to the opposing plug connector 160.
  • each pair of the differential signal terminals of the connector and its associated circuit board circuitry have an individual ground terminal associated with them that extends through the connector, thereby more closely resembling the interconnecting cable from an electrical performance aspect.
  • the same inverted, triangular relationship is maintained in the plug connector 160, and this and the structure of the receptacle connector 100 keeps the signal wires of the cable "seeing" the ground in the same manner throughout the length of the cable and in substantially the same manner through the plug and receptacle connector interface and on to the circuit board.
  • each pair of differential signal terminals importantly imparts capacitive, common mode, coupling between the three associated terminals as a set.
  • This coupling will serve to reduce the impedance in that particular region of the connector and serves to reduce the overall impedance variation through the entire cable to board interface.
  • the present invention obtains an impedance curves that more closely emulates the straight line baseline 50 of the Impedance curve of FIG. 15.
  • the sizes on the terminals and their spacing may be varied to in effect, "tune" the impedance of the connector. The effect of this tunability is explained in FIG. 15, in which a reduction in the overall impedance discontinuity occurring through a cable to circuit board connector assembly.
  • the impedance discontinuity that is expected to occur in the connectors of the present invention is shown by the dashed line 60 of FIG. 15.
  • the solid line of FIG. 15 represents the typical impedance discontinuity that is experienced in the connector system, and by comparing the dashed and solid lines, the magnitudes of the peaks and valleys of this discontinuity, H 11 , H 22 and H 33 are greatly reduced.
  • the present invention is believed to significantly reduce the overall discontinuity experienced in a conventional connector assembly. In one application, it is believed that the highest level of discontinuity will be about 135 ohms (at H 11 ) while the lowest level of discontinuity will be about 85 ohms (at H 22 ).
  • the target baseline impedance of connectors of the invention will typically be may vary from about 28 to about 150 ohms, but will preferably be in the range of between about 100 to about 110 ohms with a tolerance of about +/- 5 to +/- 25ohms. It is contemplated therefore that the connectors of the present invention will have a total discontinuity (the difference between H 11 and H 22 ) of about 50 ohms or less, which results in a decrease from the conventional discontinuity of about 90 ohms referred to above of as much as almost 50%. This benefit is believed to originate from the capacitive coupling that occurs among the two differential signal terminals and their associated ground terminal. It will be understood, however, that capacitive coupling is but one aspect that affects the ultimate characteristic impedance of the terminals and the connector supporting them.
  • the width of the ground terminal contact blade portions are preferably larger than the corresponding contact blade portions of the signal terminals.
  • a portion of the ground terminal may overlie or overlap, a portion of at least one of its associated signal terminals and in other instances, the ground terminal may lie between or abut imaginary lines that extend up from the side edges of the signal terminals.
  • the ground terminals are larger than their associate signal terminals by virtue of their increased width, they will have more surface area than a signal terminal and hence, increased coupling.
  • FIG. 7 illustrates another embodiment 300 of a connector incorporating the principles of the present invention and utilizing terminals having pin-type contact portions as opposed to the flat contact blade portion of FIGS. 1-6
  • this connector 300 helix-style terminals 302 are utilized and each such terminal 302 is housed within an individual associated cavity 304 of the dielectric connector housing 306.
  • the cavities 304 and their associated terminals 302 are disposed in the connector housing in two rows, as illustrated.
  • the base structure of the contact portions of this type of terminals is described generally in U.S. Patent No- 4,740,180, issued April 26, 1988. As shown in FIG.
  • each terminal 302 in this style connector 300 has such a helix-style contact portion 315 that extends out from a body portion 316 that is used to hold the terminal 3 02 in place within its associated connector housing cavity 304, and a tail portion 318 that as shown may be used for mounting the connector 300 to a surface of a circuit board 301.
  • the tail portions 318 of the terminals 302 are connected to the contact and body portions by way of interconnecting portions 319.
  • the planes of the contact portions 315 are different (but preferably parallel), the planes of the interconnecting portions 319 and the tail portions 318 are preferably common.
  • the tail portions 318 of these type terminals are all surface mount tails and, hence lie in a single, common plane that coincides with the top surface of a circuit board (not shown) to which the connector is mounted.
  • the terminals may utilize through-hole mounting tails.
  • the tails and the body portion of the terminals will not lie in a common plane, but rather, the ground and signal terminals may lie in different planes (vertical planes are shown in FIGS, 11 and 16) and be spaced apart from each other by a spacing "D".
  • the tails 318 occur as part of the interconnecting body portions 319 and the ground terminal tail is spaced apart from the signal terminal tails.
  • the connector 300 may include a pair of shield, inner shield 308 and an outer shield 310 to provide shielding to the overall connector structure.
  • the inner shield 308 may extend over a portion of the connector housing 306 as shown in FIG 9, and the outer shield 310 may extend over substantially all of the connector housing 306 in a manner well known in the art.
  • the connector 300 does not include any ancillary terminals, such as power in and out, or a status detection terminal as might be utilized in the connector of FIGS. 1-6.
  • ground terminals 320, 321 are utilized and are respectively associated each with a pair of differential signal terminals 325, 326 and 327, 328.
  • the signal terminals and ground terminal of each associated set are arranged in the desired triangular fashion and the sets are inverted with respect to each other, meaning that if the connector is considered as having two distinct rows of terminals, the ground terminal 320 of one set is located in one terminal row, while the ground terminal of the other differential terminal set is located in the other terminal row.
  • the signal terminals of each differential terminal set are inverted. This type of application is useful on multiple signal channel applications, where each differential terminal set is used to convey data from a different and distinct channel.
  • FIG. 12 illustrates another embodiment 400 of a connector constructed in accordance with the principles of the present invention.
  • two sets 402, 404 of differential terminals are illustrated in an inverted triangular fashion, but the three terminals that make up each differential set are partially separated by a recess, or cavity 406 formed in the front face of the connector housing 408.
  • This cavity has a depth less than the depth of the connector housing and may preferably range between about 0.5 mm to about 10 mm. This depth provides a hollow air gap or air "pool" at the mating face of the connector housing and serves to provide a measure of electrical isolation between by modifying the affinity of each of the terminals within a triplet will have for each other.
  • the recess 406 serves to somewhat "tie" the three terminals together by virtue of its use of air as a dielectric. As illustrated, it is preferable that the recess lie within the boundaries of an imaginary triangle connecting the three terminals of the triplet together.
  • FIG. 13 illustrates schematically, how a recess, or cavity, 420 may be formed in a connector housing 422 to isolate differential terminal sets from each other.
  • the recess 420 in this instance may project much deeper into the connector housing than the recess shown in FIG 12, and may extend, if need be, entirely through the connector housing.
  • the cavities 420 provide a deep air channel with the air having a different dielectric constant than the connector housing material and thus will serve to electrically isolate terminal triplets from each other
  • FIG. 14 illustrates yet another embodiment 500 in which terminal set "inserts" are formed by insert or otherwise molding a set of three associated terminals 510 (including two signal terminals S and one ground reference terminal G) onto a dielectric support 506 that may have the general triangular configuration shown in FIG. 14 to form a distinct insert or module that may be inserted into a corresponding cavity.
  • the terminals of each such associated set are maintained in their triangular orientation by the support 506 so that the two signal terminals are spaced apart from each other and the ground terminal is spaced apart from the signal terminals.
  • These inserts, or modules are then inserted into the connector housing 502 into complementary shaped cavities 505.
  • the dielectric constant of the molded support 506 will be different than that of the connector housing 502 to provide another means of electrical isolation between terminal triplets and enhance the electrical affinity, at least in terms of coupling, among the terminals of each triplet.
  • the support material of the terminal set has a dielectric constant higher than that of the surrounding connector housing, the coupling among the terminals in the triplet will be increased, thereby driving the impedance of the triplet down.
  • the support material of the terminal set has a dielectric constant lower than that of the surrounding connector housing, the coupling among the terminals in the triplet will be decreased, thereby driving the impedance of the triplet up.
  • the impedance of the connector may be tuned, both overall and within individual triplet sets (or signal channels).
  • FIG. 17 illustrates the implementation of the inverted structure of the present invention in a pin-type automotive connector 600.
  • the connector 600 has an insulative housing 601 with a plurality of cavities 602 formed therein. Each such cavity 602 preferably includes a conductive terminal disposed therein, although in some applications, certain of the cavities may be empty or "blind".
  • two signal channels are shown, each of which includes a terminal triplet 603, 604, with two signal terminals A+, A-, B+, B- associated with a single ground terminal GRA and GRB .
  • the terminal triplets or triads may be separated by power "ground” type terminals, i.e., voltage in and voltage return, +Vcc and -Vcc.
  • the terminals extend through to the rear of the housing 601, where they may be terminated to corresponding wires of a wire harness or to a circuit board.
  • the opposing connector will utilize projecting terminals arranged in the same manner to mate with the connector 600.

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  • Networks Using Active Elements (AREA)

Claims (21)

  1. Elektrischer Verbinder (100, 300, 400, 500, 600) hoher Dichte, der aufweist: ein Gehäuse (112, 306, 408, 422, 502, 601) das eine Mehrzahl von leitenden Anschlüssen (119) trägt, wobei die Anschlüsse Kontaktteile (181) aufweisen, die dazu ausgebildet sind, mit Kontaktteilen gegenüberstehender Anschlüsse eines zusammenpassenden Verbinders zusammengefügt zu werden, welche Anschlüsse wenigstens erste und zweite getrennte oder einzelne Sätze (165) von Anschlüssen einschließen, wobei jeder einzelne Satz von Anschlüssen ein Paar von differentiellen Signalkontaktteilen (140, 141) und einen damit verknüpften Massekontaktteil (150) einschließt,
    dadurch gekennzeichnet dass
    die zwei einzelne Sätze (165) von Anschlüssen in wenigstens zwei Reihen an dem Gehäuse (112) angeordnet sind, wobei eine der beiden Reihen ein Paar von differentiellen Signalkontaktteilen (140, 141) von dem ersten einzelnen Satz (165) von Anschlüssen und einen Massekontaktteil (150) von dem zweiten einzelnen Satz von (165) von Anschlüssen einschließt, wobei die andere der beiden Reihen ein Paar von differentiellen Signalkontaktteilen (142, 143) von dem zweiten einzelnen Satz (165) von Anschlüssen und einen Massekontaktteil (150) von dem ersten einzelnen Satz (165) von Anschlüssen einschließt, wobei die ersten und zweiten einzelnen Sätze (165) von Anschlüssen in Bezug aufeinander innerhalb des Gehäuses (112) umgekehrt sind, wobei der erste einzelne Satz von Anschlusskontaktteilen (140, 141), der in der einen Reihe angeordnet ist, dem Massekontaktteil (150) des zweiten einzelnen Anschlusssatzes, der in der anderen Reihe angeordnet ist, gegenüber steht.
  2. Verbinder nach Anspruch 1, bei dem das Verbindergehäuse ein Steckerverbindergehäuse (160) ist und das Gehäuse (160) einen Steckerteil (162) einschließt, der mit einem gegenüberstehenden Buchsenverbinder (100) zusammenfügbar ist, und bei dem die beiden Reihen zwei unterschiedlichen des Steckerteils (162) gegenüberstehen.
  3. Verbinder nach Anspruch 1, bei dem das Verbindergehäuse (112) ein Buchsenverbindergehäuse ist und das Gehäuse einen Steckdosenteil einschließt, der einen Steckerteil eines gegenüberstehenden Steckerverbinders (160) aufnimmt, und bei dem die beiden Reihen auf gegenüberliegenden Oberflächen des Steckdosenteils angeordnet sind.
  4. Verbinder nach Anspruch 1, bei dem für jeden der einzelnen Sätze (165) von Anschlüssen das Paar von differentiellen Signalkontaktteilen (140, 141) und der damit verknüpfte Massekontaktteil (150) auf Ecken eines imaginären Dreiecks angeordnet sind.
  5. Verbinder nach Anspruch 4, bei dem die imaginären Dreiecke in Bezug auf jeden einzelnen Satz (165) von Anschlüssen umgekehrt sind.
  6. Verbinder nach Anspruch 1, bei dem das Verbindergehäuse (422) wenigstens eine darin ausgebildete Ausnehmung (420) einschließt, die zwischen den beiden einzelnen Sätzen von Anschlüssen (S,S,G) angeordnet ist, wobei die Ausnehmung (420) einen Luftspalt zwischen den einzelnen Sätzen von Anschlüssen definiert.
  7. Verbinder nach Anspruch 1, bei dem die einzelnen Sätze von Anschlüssen zusammen als eine Anschlusseinheit (506) ausgebildet sind und das Verbindergehäuse (502) daran ausgebildete Hohlräume (505) einschließt, die die einzelnen Anschlusssätze aufnehmen.
  8. Verbinder nach Anspruch 1, bei dem jeder der Anschlüsse (119, 302) einen Schwanzteil (125, 318) einschließt, der sich aus dem Gehäuse (112, 306) zum Anbringen des Verbinders an einem Schaltungsglied erstreckt.
  9. Verbinder nach Anspruch 8, bei dem die Anschlussschwanzteile (125, 318) Oberflächenanbringungsteile sind, die in einer gemeinsamen Ebene liegen.
  10. Verbinder nach Anspruch 8, bei dem die Schwanzteile (318) Durchgangslochteile zum Einfügen in Montagelöcher eines Schaltungsgliedes einschließen, welche Schwanzteile (318) der Signalanschlüsse (327, 328) jedes der einzelnen Sätze (165) von Anschlüssen von den Schwanzteilen (318) der Masseanschlüsse (321) der einzelnen Anschlusssätze (165) beabstandet sind.
  11. Verbinder nach Anspruch 1, der weiter einen zusätzlichen einzelnen Satz (165) von Anschlüssen einschließt, wobei der zusätzliche einzelne Anschlusssatz (165) ein Paar von differentiellen Signalkontaktteilen (144, 145) und einen damit verknüpften Massekontaktteil (152) einschließt, welche ersten, zweiten und zusätzlichen Sätze (165) von Anschlüssen in Bezug aufeinander innerhalb des Verbindergehäuses (112) umgekehrt sind.
  12. Verbinder nach Anspruch 1, bei dem die Massekontaktteile (150) der ersten und zweiten einzelnen Anschlusssätze (165) breiter sind als die Breite irgendeines einzelnen Signalanschlusses (140, 141) der einzelnen Anschlusssätze (165).
  13. Verbinder nach Anspruch 10, bei dem die Masse- und Signalanschlussschwanzteile (150; 140, 141) in unterschiedlichen Ebenen liegen.
  14. Verbinder nach Anspruch 7, bei dem die Anschlusseinheiten (503) jeweils einen dielektrischen Körperteil (506) einschließen, der die Anschlüsse (S,S,G) jedes einzelnen Anschlusssatzes trägt, wobei der dielektrische Körperteil (506) der Anschlusseinheit ein Paar von differentiellen Signalanschlüssen (S,S) in beabstandeter Ordnung darauf trägt und weiter einen verknüpften Masseanschluss (G) trägt, der von dem differentiellen Signalanschlusspaar beabstandet ist.
  15. Verbinder nach Anspruch 14, bei dem das Verbindergehäuse (502) aus einem dielektrischen Material gebildet ist und das Verbindergehäuse(502) und der dielektrische Körperteil (506) des Anschlusssatzes jeweils unterschiedliche Dielektrizitätskonstanten haben.
  16. Verbinder nach Anspruch 14, bei dem der dielektrische Körperteil (506) des Anschlusssatzes eine dreieckige Konfiguration hat.
  17. Verbinder nach Anspruch 1, bei dem die einzelnen Anschlusssätze (165) durch eine Schlüssel-, Keil- oder Passfederkomponente (188) zum Ausrichten eines gegenüberstehenden Verbinders mit dem Verbinder getrennt sind.
  18. Verbinder nach Anspruch 1, bei dem das Verbindergehäuse (408) eine Mehrzahl von beabstandeten hohlen Hohlräumen einschließt, die darin angeordnet sind, die die beiden Anschlussreihen des Gehäuses definieren, und wobei für jeden einzelnen Anschlusssatz (402, 404) das Paar von differentiellen Signalkontaktteilen (S,S) und der verknüpfte Massekontaktteil (G) auf Ecken von imaginären Dreiecken angeordnet sind, wobei das Verbindergehäuse (408) weiter eine. Vorderfläche einschließt und die Vorderfläche ein Paar von darin ausgebildeten Ausnehmungen (406) einschließt, welche Ausnehmungen (406) innerhalb der Grenzen der imaginären Dreiecke angeordnet sind.
  19. Verbinder nach Anspruch 1, bei dem die Anschlüsse Stiftanschlüsse einschließen und der Verbinder einen Stromversorgungseingangsanschluss (+Vcc) und einen Stromversorgungsausgangsanschluss (-Vcc) einschließt, wobei die Stromeingangs- und Stromausgangsanschlüsse in unterschiedlichen der beiden Reihen von Anschlüssen angeordnet sind.
  20. Verbinder nach Anspruch 15, bei dem die Dielektrizitätskonstante des Verbindergehäuses (520) kleiner ist als die Dielektrizitätskonstante des dielektrischen Körperteils (506).
  21. Verbinder nach Anspruch 15, bei dem die Dielektrizitätskonstante des Verbindergehäuses (520) größer ist als die Dielektrizitätskonstante des dielektrischen Körperteils (506).
EP02759087A 2001-06-11 2002-06-11 Impedanzabgestimmter verbinder mit hoher dichte Expired - Lifetime EP1413014B1 (de)

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US29741901P 2001-06-11 2001-06-11
US297419P 2001-06-11
PCT/US2002/018372 WO2002101883A2 (en) 2001-06-11 2002-06-11 High-density, impedance tuned connector

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EP1413014A2 EP1413014A2 (de) 2004-04-28
EP1413014B1 true EP1413014B1 (de) 2005-12-21

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JP (1) JP3990355B2 (de)
CN (1) CN1252880C (de)
AT (1) ATE313864T1 (de)
AU (1) AU2002324442A1 (de)
DE (1) DE60208205T2 (de)
TW (1) TW534492U (de)
WO (1) WO2002101883A2 (de)

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US6786755B2 (en) 2002-03-27 2004-09-07 Molex Incorporated Differential signal connector assembly with improved retention capabilities
JP4091603B2 (ja) 2002-06-21 2008-05-28 モレックス インコーポレーテッド モジュール構造を有するインピーダンス調整された高密度コネクタ
EP1459414B1 (de) * 2002-09-25 2008-12-17 Molex Incorporated Impedanzangepasste kontaktanordnung und verbinder
CN101015095B (zh) 2004-07-07 2012-05-09 莫莱克斯公司 用于和小尺寸插塞式连接器一起使用的键式外壳
JP4190015B2 (ja) * 2005-11-02 2008-12-03 日本航空電子工業株式会社 コネクタ
JP4738990B2 (ja) 2005-11-17 2011-08-03 タイコエレクトロニクスジャパン合同会社 差動伝送コネクタおよびこれと嵌合する基板取付用差動伝送コネクタ並びに差動伝送コネクタ組立体
JP2007220427A (ja) * 2006-02-15 2007-08-30 Taiko Denki Co Ltd アース板付きコネクタ
JP4216287B2 (ja) * 2006-02-20 2009-01-28 日本航空電子工業株式会社 コネクタ
US8142236B2 (en) 2006-08-02 2012-03-27 Tyco Electronics Corporation Electrical connector having improved density and routing characteristics and related methods
US7670196B2 (en) 2006-08-02 2010-03-02 Tyco Electronics Corporation Electrical terminal having tactile feedback tip and electrical connector for use therewith
US7753742B2 (en) 2006-08-02 2010-07-13 Tyco Electronics Corporation Electrical terminal having improved insertion characteristics and electrical connector for use therewith
JP2009037971A (ja) * 2007-08-03 2009-02-19 Tyco Electronics Amp Kk 基板実装型コネクタ
JP5220110B2 (ja) * 2007-08-23 2013-06-26 モレックス インコーポレイテド 基板取付電気コネクタ
JP2011519463A (ja) * 2008-02-26 2011-07-07 モレックス インコーポレイテド インピーダンス制御電気コネクタ
CN103477508A (zh) * 2010-10-22 2013-12-25 Fci连接器新加坡有限公司 高速柔性印刷电路板连接器
JP4976568B1 (ja) * 2011-04-18 2012-07-18 日本航空電子工業株式会社 コネクタ
JP5727902B2 (ja) 2011-09-13 2015-06-03 ホシデン株式会社 コネクタ
JP5986012B2 (ja) * 2013-02-18 2016-09-06 日本航空電子工業株式会社 コネクタおよびこれを用いた信号伝送方法
US9590339B2 (en) * 2013-05-09 2017-03-07 Commscope, Inc. Of North Carolina High data rate connectors and cable assemblies that are suitable for harsh environments and related methods and systems
CN107732578B (zh) * 2016-08-12 2020-06-09 东莞莫仕连接器有限公司 线缆连接器
CN107978926B (zh) * 2016-10-21 2020-06-30 泰科电子(上海)有限公司 连接器

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JP3990355B2 (ja) 2007-10-10
WO2002101883A2 (en) 2002-12-19
CN1252880C (zh) 2006-04-19
JP2004534358A (ja) 2004-11-11
CN1515052A (zh) 2004-07-21
TW534492U (en) 2003-05-21
WO2002101883A3 (en) 2004-02-19
DE60208205T2 (de) 2006-06-22
EP1413014A2 (de) 2004-04-28
AU2002324442A1 (en) 2002-12-23
ATE313864T1 (de) 2006-01-15
WO2002101883B1 (en) 2004-05-06
DE60208205D1 (de) 2006-01-26

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