Abstract: In semiconductor modules having a plurality of semiconductor devices mounted on a multilayer printed circuit boards as the processing speed increases, a short circuit current flowing through CMOS devices in the semiconductor devices during operation can cause noise because of ground inductance or power supply inductance. This noise can result in erroneous operations. To solve this problem, the power supply layer or grand layer that is connected to either the power supply terminal Vcc or the ground terminal Gnd of each semiconductor memory, which is located farther from the connection terminals, is arranged closer to the semiconductor memories with this arrangement, the short circuit current flowing through the semiconductor memories is more strongly magnetically coupled with the power supply layer or ground layer arranged close to them. Thus, it is possible to reduce the effective inductance. This, in turn, reduces noise, making it possible to provide a semiconductor module with an increased processing speed.

Abstract: A telecommunications electric circuit having a low return loss and low crosstalk is adapted for use with unshielded twisted pairs of connecting wires. The circuit includes a pair of elongated circuit conductors parallel to each other over a substantial portion of their respective lengths. Each circuit conductor being a trace having a uniform width over a substantial portion of the length of the trace. Each circuit conductor trace having a width equal to the width of the other trace of the pair. Each of the circuit conductor traces has a uniform thickness. The circuit conductor traces are spaced apart a uniform distance which distance is determined from the center of each trace to the center of the other trace. The uniform distance being no greater than twice the width of one of said traces. A compensation trace is spaced from, parallel to and aligned with a portion of each of the respective circuit conductors.

Abstract: A modular outlet having reduced crosstalk is presented. The modular outlet of the present invention comprises a connector housing which supports a plurality of contacts and a termination cap mated to the housing for terminating a plurality of wires at one end of the contacts. The contacts are positioned on a contact carrier which is received in the housing. The contacts include current carrying plates which are stacked to induce capacitance between selected contacts. This method of achieving a controlled amount of capacitive coupling between selected contacts allows the modular outlet to meet or exceed Category 5 requirements. Further, while the modular outlet connections are positioned in accordance with a standard configuration, the insulation displacement contacts are sequentially positioned, thereby eliminating pair splitting when terminating.

Abstract: A high frequency electrical connector having a dielectric block onto which a terminal array of four pairs of electrical conductors are connected, the resulting assembly residing in a jack frame housing configured to removably receive a mating plug. The connector has a planar spring contact region for electrically contacting a corresponding planar contact region of the mating plug, a curved forefront region whereat non-electrical contact cross-overs of the terminal array conductors occurs, and a planar back region where reverse crosstalk is generated. The connector substantially compensates for crosstalk generated at the mating plug and connector contact regions. The configuration of the planar contact region of the mating plug and planar spring contact region of the connector is dictated by industry standards.

Abstract: To provide a contact capable of reducing the crosstalk between adjacent contacts, and a terminal connector with such contacts, capable of constructing a high speed communication network. The contact 10 has a generally central base section 12, contact sections 14, 16 extending from the opposite ends of the base section 12 generally normal thereto, connecting sections 18, 20 obliquely extending generally in the same direction transverse to the contact sections 14, 16, for connecting the base section 12 with the contact sections 14, 16, respectively. One connecting section 18 has a first part 18a extending from one lengthwise end of the base section 12 generally normal thereto while maintaining a lateral distance from the contact section 14, a second part 18b extending from the contact section 14 in parallel thereto, and a third part 18c extending in the crossing direction to the surface of the contact section 14 to connect the first part 18a to the second part 18b.

Abstract: Disclosed is an insert for a modular jack assembly comprising an insulative member comprising a lower section having a base side and opposed front and rear sides and an upper section. The upper section has an upper side, a lower side and a terminal end interposed between said upper and said lower side. The upper section is superimposed over said lower section and extends from the lower side perpendicularly to said terminal ends. A first wire extends from adjacent the base side of the lower section longitudinally through the lower section and transversely through the upper section. It then extends perpenducularly adjacent the upper side of the upper section. A second wire extends from adjacent the base side of the lower section longitudinally through only part of the lower section and then angularly through the front side of the lower section. A third wire extends from adjacent the base side of the lower section longitudinally through the lower section and transversely across the upper section.

Abstract: An electrical connector utilizing a circuit board assembly for providing straight-through electrical interconnection of data line pairs between two jacks, and for providing breakout terminals. The layout of the electrical connector is such that common mode rejection is improved and cross-talk between data line pairs is minimized. The electrical connector has a circuit board with conductors located on both the bottom and top surfaces of the circuit board. The conductors are serially coupled to test pads to form a straight-through connection between pin openings located at opposite ends of the circuit board. The test pads are located so that the pads representing data line pairs are adjacent one another. Location of the test pads allows the conductors representing data line pairs to be located in a close parallel relationship for at least part of the way along the circuit board.

Abstract: Disclosed is an electrical connector in which the conductive and dielectric elements are arranged in a composite I-beam shaped geometry in which the conductive element is perpendicularly interposed between two parallel dielectric and ground plane elements. Low cross talk and controlled impedance are found to result from the use of this geometry.

Abstract: Disclosed is an electrical connector which compensates for near-end crosstalk at its mating section with near-end crosstalk of an opposite polarity and essentially equal magnitude. Conductive plates connected to the conductors provide capacitive coupling unbalance between the adjacent pairs to produce the necessary opposite polarity, equal magnitude near-end crosstalk.

Abstract: A cross-talk compensaring circuit member for use with communications systems connector arrays. The circuit member comprises a wiring board on which are printed conductive paths for each of the leads of the several (usually four) pairs in a connector jack, and the board may accommodate several such jacks. The conductive paths are routed in a manner to create facing inductive loop portions which are substantially mirror images of each other to produce inductive interaction among the different pair combinations. Capacitive coupling is also used in one embodiment.

Abstract: A modular jack type connector includes a dielectric housing having a plug-receiving cavity open at one end of the housing. A plurality of terminals are mounted on the housing, with spring beam contact portions extending in cantilever fashion in a single row within the plug-receiving cavity. The contact portions extend from curved base portions located in the housing. Tail portions of the terminals project from the housing in two rows generally parallel to the single row of contact portions, such that each pair of adjacent terminals includes a tail portion in each row thereof. The terminals include straight intermediate sections extending between the curved base portions and the tail portions, with the intermediate sections of each pair of adjacent terminals being substantially separated from each other in a direction transversely of the rows.

Abstract: The invention provides a means of reducing crosstalk in data connectors and includes a first conductive signal path and a second conductive signal path. The first signal path includes crossover connection means for changing over the position of the first signal path at a point intermediate between the ends of the first and second paths to reduce crosstalk in the first and second paths through the introduction of antiphase signals. In practice this antiphase crosstalk can be applied by a network of PCB tracks (36) to simulate the conductors.

Abstract: There is provided an electrical connector, including a housing which receives a plurality of elongated contacts for receiving electrical signals. Each contact includes a free end. Each contact having a major bend therein. At least a portion of adjacent contacts between their respective free ends and major bends are not parallel so that electrical signal transmission of the connector is enhanced.

Abstract: An insert for a modular jack assembly insert comprising an insulative member having top and bottom walls; a front end and a rear recess; a first wire extending from adjacent the bottom wall of the insulative member across the rear recess to the top wall and then through the front end of the insulative member; and a second wire extending from adjacent the bottom wall of the insulative member across the rear recess in non-contacting, overlapping relation with the first wire.

Abstract: A high frequency electrical connector including a plurality of parallel contacts, a plurality of terminals, and conductors interconnecting the contacts to the terminals in a manner such that signals flowing through proximate contacts are transmitted in opposite directions to reduce near-end crosstalk.

Abstract: A modular plug and multi-pair cable assembly provides reduced near-end crosstalk between two signal pairs of the cable. A modular plug has a plurality of wire-receiving passages disposed in first and second planar arrays spaced one above the other, with the passages of one planar array being staggered in position with respect to the passages of the other planar array. An end of a first wire of each of two signal pairs is received in respective wire-receiving passages of the first planar array and an end of a second wire of the two signal pairs is received in respective wire-receiving passages of the second planar array. A first pair plane in which the wire ends of the first signal pair are situated intersects a second pair plane in which the wire ends of the second signal pair are situated. In this manner crosstalk between the two signal pairs resulting from magnetic and electric field coupling is reduced.

Abstract: A modular jack type connector includes a dielectric housing defining a plug-receiving cavity. A plurality of terminals are mounted on the housing. Each terminal includes a spring beam contact portion extending in cantilever fashion in a single row within the plug-receiving cavity, with the contact portions extending from curved base portions located in the housing, and tail portions projecting from the housing in two rows generally parallel to the single row such that each pair of adjacent terminals includes a tail portion in each row thereof. Intermediate portions extend between the curved base portions and the tail portions, with the intermediate portions of at least one of the pair of adjacent terminals being separated from each other in a direction generally parallel to the rows. Bowed portions join the intermediate portions and the tail portions of the one pair of adjacent terminals, with the bowed portions overlapping each in a plane transverse to the rows.

Abstract: A connector for communications systems includes four input terminals and four output terminals in ordered arrays. A circuit electrically couples respective input and output terminals and cancels crosstalk induced across adjacent connector terminals. The circuit includes four conductive paths between the respective input and output terminals. Sections of two adjacent paths are in close proximity and cross each other between the input and output terminal. At least two of the paths have sets of vias connected in series between the input and output terminals. The sets of vias are adjacent.

Abstract: This invention is directed to a patch cord cable assembly for use in a high speed transmission cable network, more particularly to an electrical connector which gives the assembly the capability of transmitting data at 100 MHz frequency while offering near-end crosstalk (NEXT) at EIA/TIA 568-A Category 5 performance levels. The preferred electrical connector comprises a pair of interfitting housing members, and a plurality of side-by-side electrical terminals positioned between the housing members for establishing electrical contact with the individual wires of a cable. The terminals are arranged at essentially one end of the housing members and the cable is caused to enter said housing members from an opposite end thereof. One of the housing members includes a cable jacket stop intermediate the ends and plural, spaced-apart posts between the cable jacket stop and the one end.

Abstract: Disclosed is a modular jack having a first plurality of wires which extend in a common vertical plane from the bottom wall of the housing across the opened end and to the top wall and then extend horizontally forward and then angularly downwardly and rearwardly back toward the rear opened end. A second plurality of wires extends first in a common vertical plane from the bottom wall across only a part of the rear opened end and then extends obliquely, horizontally and upwardly toward the front opened end. A method of use is also disclosed.

Abstract: An electrical connector which provides compensation for crosstalk includes a number of conductors positioned at least partially within an internal cavity defined by a housing. The elongate conductors are generally substantially parallel and laterally spaced and include a resilient contact portion at a first end and an insulation displacement contact portion at a second end. The elongate conductors include a pair conductors, at least a portion of which are positioned in an overlapping, vertically spaced relationship. The portions of the pair of conductors which overlap are generally wider than the substantially parallel, laterally spaced portions of the conductors so as to thereby define respective compensating segments. The length of the compensating segments as well as the width of the portion of the compensating segments which overlap can be selected to establish capacitive coupling between the compensating segments so as to thereby compensate for crosstalk between the conductors.

Abstract: An asymmetric contact having a first end part for connection to an external conductor and a second end part for elastic coupling with another similar contact. The second end part (4) is offset to one side of the axis of the first end part (1, 2, 3) and to the coupling part (8) between them, and is substantially half the width of the first end part. A terminal strip includes two parallel rows of the contacts facing each other. The contacts are arranged in successive pairs, each pair including first and second type contacts in opposite rows and having their second end parts to the right and left sides, respectively, of a central axis of the first end part and the coupling part. A distance (d1) between the second end parts of each contact in a pair is less than a distance (d2) between the second end parts of adjacent contacts of two different pairs.

Abstract: An electrical connector assembly includes two mating multiposition electrical connector halves 2, 4 and an insert 10 which is positioned in engagement with the terminals 8 in one of the connector halves. The insert is fabricated from a lead frame 16 which is secured between an insulative substrate 40 and a cover 48. Portions of the lead frame 16 extending into slots 44 and channels 52 on the substrate and cover are punched out to separate connecting tabs 26 from ground buses 18, 20, 22. Surface mount capacitors 38 are soldered to both the solder tab sections 30 on the connecting tabs and to solder contact sections 34 on the ground buses. The insert 10 is then positioned on the terminals 8 on one connector half with the tines 32 in a terminal socket 28 on each connecting tab 26 engaging the terminals 8.

Abstract: An electrical connector is provided with at least two pairs of signal-carrying contacts, which provides a low cost, compact, and rugged construction for minimizing crosstalk. While two initial contacts (A, B, FIG. 2) of the two pairs (102, 104) lie adjacent to each other, so there is unwanted capacitive and inductive coupling between them, secondary contacts (C, D) of the two pairs do not lie adjacent to the initial contacts and therefore are not as closely coupled to the initial contacts. Each secondary contact is capacitively coupled to an initial contact of the other pair by a lateral extension (110, 122) formed in one of the contacts which overlies the other contact in a local region (120) of limited length. The capacitive coupling resulting from the lateral extensions substantially cancels crosstalk that otherwise would exist.

Abstract: An insulation displacement connector for flat cable comprising an insulating housing and one piece terminals, each having a mating contact portion and a slotted plate wire connecting portion joined by a conducting lead portion. All the mating contact portions are mounted in a common plane at the mating face as a row extending transversely of a mating direction and the wire connecting portions are arranged as four rows extending transversely of the cable axis and at predetermined spacings apart in an axially rearward direction.

Abstract: An electrical connector (30) having crosstalk reduction between selected pairs of electrical contacts comprises a printed circuit board (36, 36') having a pair of circuit elements (40, 42) therein connected through welding pads to selected contacts (6, 3) the connector. The signal paths of such selected contacts are severed and then are re-routed by means of the pattern of circuit elements in the printed circuit board, each circuit element balancing the mutual inductance in such re-routed signal paths for enhanced crosstalk reduction.