Abstract:
A wiring board includes: a first wiring; a second wiring being disposed adjacently to the first wiring; a third wiring being disposed adjacently to the first wiring; a fourth wiring being disposed adjacently to the third wiring; and an insulating layer, wherein the second wiring and the fourth wiring are disposed adjacently to each other, the first wiring and the fourth wiring are not overlapped, the second wiring and the third wiring are not overlapped, a crest and a trough are provided on a side face of the first wiring, the crest and the trough are provided on a side face of the second wiring, the trough provided on the side face of the first wiring and the third wiring are overlapped, and the trough provided on the side face of the second wiring and the fourth wiring are overlapped.
Abstract:
A system and method for wireless DSL routing without signal interference is disclosed herein. The system includes a DSL interface, a WLAN interface, and a power system. The WLAN interface is isolated from the rest of the system by various isolation and signal interference reduction techniques. The system can be implemented in a single printed circuit board.
Abstract:
A printed wiring board includes a bridge located in a surface layer, a noise absorber located on the bridge, a plurality of grounds directly connected or high-frequency-connected to the bridge, a first device using one of the plurality of grounds as a reference potential, a second device using one of the plurality of grounds other than the ground for the first device as a reference potential, and a high-speed signal line that connects the first device and the second device. The high-speed signal line is routed through a layer adjacent to the bridge in a layer direction of the printed wiring board to form a transmission line structure.
Abstract:
A wireless device includes a ground plane with at least two portions. On each of the at least two portions at least one connecting means is provided. The two connecting means are connected with an electric component for connecting the at least two portions of the ground plane. The ground plane is partially covered with an insulating material and the connecting means are given by a part of the ground plane which is not covered by any insulating material.
Abstract:
A metal plate on a multi-die LED emitter substrate or a metal plate on a metal-core printed circuit board (MCPCB) that attaches to the emitter substrate (or both plates) can be fabricated with a number of generally radial grooves, at least some of which extend to the peripheral edge of the plate. These grooves can provide channels that allow air to escape during solder-bonding processes, reducing the size and/or total area of solder voids and thereby improving thermal transfer between the emitter and the MCPCB.
Abstract:
A printed circuit board on which a surface mount electronic device is mounted. The printed circuit board includes a substrate on which land arrangements are disposed in an array. Each land arrangement includes a core portion and drawing portions. The drawings are disposed along diagonal directions relative to the core portions of the array of the land arrangements.
Abstract:
A structural body includes a first conductor having a first opening; a second conductor, having a second opening, which is opposite to at least a portion of the first conductor; a conductor via, passing through the first opening and the second opening, which is insulated from the first conductor and the second conductor; a first interconnect, provided in the inside of the first opening, of which one end thereof is connected to the conductor via and the other end thereof is formed as an open end and which is opposite to the second conductor; and a second interconnect, provided in the inside of the second opening, of which one end thereof is connected to the conductor via and the other end thereof is formed as an open end, and which is opposite to the first conductor.
Abstract:
A structural body includes: a first conductor and a second conductor of which at least portions are opposite to each other; a third conductor, interposed between the first conductor and the second conductor, of which at least a portion is opposite to the first conductor and the second conductor, and has a first opening; an interconnect provided in the inside of the first opening; and a conductor via which is electrically connected to the first conductor and the second conductor and is electrically insulated from the third conductor, wherein the interconnect is opposite to the first conductor and the second conductor, one end thereof being electrically connected to the third conductor at an edge of the first opening and an other end thereof being formed as an open end.
Abstract:
A system, apparatus, and method are provided for using a PCB component as an antenna to allow for RFID communication in the UHF band. The present invention enables supply chain management of a PCB and products containing the PCB by enabling tracking of a PCB at the assembly level such that at each production stage of the board production it is known exactly where the product is and what is its present state of test. One embodiment uses an existing ground plane of a PCB, splitting the ground plane of all the layers of the PCB, allowing for a dipole structure that provides an adequate received energy level to power the circuit to the “on” state thereby allowing RFID/Electronic Product Code transactions. In alternative embodiments, existing or added traces are used in place of the split ground plane as an antenna for the RFID IC. The supply chain management can employ a dedicated RFID interrogator that is connected to an IT network and allows for bill of materials to be fulfilled in an automated fashion throughout the assembly of the PCB. The manufacturer of the end product can also use the RFID IC in an own end product item level supply management system that includes inventory, shipments, and returns.
Abstract:
A wiring board connection method comprising: arranging a continuous conductive joint body on adjacent connection terminals of one of the wiring boards in a space between the adjacent connection terminals on one of the wiring boards; aligning the wiring boards so that the connection terminals face each other with the conductive joint body interposed therebetween; and bonding the connection terminals with each other by heating and then cooling the conductive joint body, wherein: the conductive joint body is a material that generates air bubbles upon being heated; and a recessed portion is formed on a surface of at least one of the connection terminals, the surface being opposite to the connection terminal of another wiring board. When the connection terminals are bonded with each other, the conductive joint body is allowed to move so as to gather on the surfaces of the connection terminals where no recessed portions are formed.