Abstract:
The present disclosure relates to a telecommunications jack including a housing having a port for receiving a plug. The jack also includes a plurality of contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the housing, and a plurality of wire termination contacts for terminating wires to the jack. The jack further includes a circuit board that electrically connects the contact springs to the wire termination contacts. The circuit board includes a multi-zone crosstalk compensation arrangement for reducing crosstalk at the jack.
Abstract:
A semiconductor device has a substrate and RF coupler formed over the substrate. The RF coupler has a first conductive trace with a first end coupled to a first terminal of the semiconductor device, and a second conductive trace with a first end coupled to a second terminal of the semiconductor device. The first conductive trace is placed in proximity to a first portion of the second conductive trace. An integrated passive device is formed over the substrate. A second portion of the second conductive trace operates as a circuit component of the integrated passive device. The integrated passive device can be a balun or low-pass filter. The RF coupler also has a first capacitor coupled to the first terminal of the semiconductor device, and second capacitor coupled to a third terminal of the semiconductor device for higher directivity. The second conductive trace is wound to exhibit an inductive property.
Abstract:
An apparatus and method for crosstalk compensation in a jack of a modular communications connector includes a flexible printed circuit board connected to jack contacts and to connections to a network cable. The flexible printed circuit board includes conductive traces arranged as one or more couplings to provide crosstalk compensation.
Abstract:
A multi-layer printed circuit board includes a first trace layer and a second trace layer. The second trace layer and the first trace layer are located on parallel horizontal planes. A first group of traces is laid on the first trace layer. A second group of traces is laid on the second trace layer. The second group of traces and the first group of traces are positioned on up and down positions of the first trace layer and the second trace layer. The first group of traces and the second group of traces extend in different directions.
Abstract:
A semiconductor IC-embedded module 100 comprises a multilayer substrate 101 having first and second insulating layers 101a and 101b, and a controller IC 012 and memory IC 103 that are embedded in the multilayer substrate 101. A wiring layer 104 is formed as an internal layer in the multilayer substrate 101. Part of the wiring layer 104 constitutes a bus line 104X. The controller IC 102 or memory IC 103 is embedded in the second insulating layer 101b. First and second ground layers 105a and 105b are provided respectively in the first and second insulating layers 101a and 101b. The effect of noise generated by bus lines is reduced, and an additional reduction in noise and a decrease in size and thickness are achieved by laying out bus lines that connect the semiconductor ICs so that distances are minimized.
Abstract:
A method for connecting circuit boards, comprising: (i) preparing a first circuit board having connection parts assigned to end parts of a plurality of conductor wirings, and a second circuit board having connection parts assigned to corresponding end parts of a plurality of conductor wirings; (ii) disposing the connection parts of the first circuit board to face the connection parts of the second circuit board with a thermosetting adhesive film between the connection parts of the circuit boards; and (iii) applying heat and pressure to the connection parts and to the thermosetting adhesive film sufficiently high to thoroughly push away the adhesive film so as to establish electrical contact between connection parts of the circuit boards facing each other and to allow for curing of the adhesive; wherein the conductor wirings constituting the connection parts of at least one of the first and second circuit boards contain non-linear wirings.
Abstract:
A connecting device for cables and jumper wires according to the present invention at least comprises a flexible flat cable and a second connecting member, wherein the flexible flat cable and the second connecting member are linked to each other and positioned by a circuit board for turn-on, and the to circuit board is provided thereon with a plurality of circuits, and the flexible flat cable is provided with a plurality of first pins connected to each of the circuits, and the second connecting member is also provided with a plurality of second pins connected to each of the circuits, and the arranging order of each first pin differs from that of each second pin so that each circuit on the circuit board can provide a jumper connection between the flexible flat cable and the second connecting member.
Abstract:
The present invention involves chip-to-chip communication systems for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of systems that can benefit from FEXT reduction.
Abstract:
A flex-rigid wiring board including a rigid printed wiring board having a rectangular shape and having a rigid base material and a conductor, and a flexible printed wiring board having a flexible base material and a conductor formed over the flexible base material. The conductor of the flexible printed wiring board is electrically connected to the conductor of the rigid printed wiring board. The flexible printed wiring board is connected to the rigid printed wiring board and extends from one or more sides of the rectangular shape of the rigid printed wiring board such that the flexible printed wiring board extends in a direction which makes an acute angle with respect to one or more sides of the rectangular shape of the rigid printed wiring board.
Abstract:
To provide an electron source including: a wiring board having: a substrate having a groove on its surface; a conductive wire containing a metal which is arranged along the groove in the groove; and a wiring which is arranged above the wire crossing the wire; and an electron-emitting device which is arranged on the wiring board and is electrically connected to the conductive wire and the wiring; wherein the wire has an oxide layer of the metal contained in the wire on its surface.