Abstract:
A printed circuit board includes a plurality of layers including attachment layers and routing layers; first and second signal vias forming a differential signal pair, the first and second signal vias extending through the attachment layers and connecting to respective signal traces on a breakout layer of the routing layers; an antipad of a first type around and between the first and second signal vias in one or more of the attachment layers; and antipads of a second type around the first and second signal vias in at least one routing layer adjacent to the breakout layer.
Abstract:
A printed circuit board includes a plurality of layers including attachment layers and routing layers; and via patterns formed in the plurality of layers, each of the via patterns comprising: dual diameter first and second signal vias forming a differential signal pair, the first and second signal vias being configured to accept contact tails of signal conductors of a connector; dual diameter ground shadow vias adjacent to each of the first and second signal vias, wherein the dual diameter shadow ground vias have a reversed diameter configuration with respect to the dual diameter first and second signal vias; and ground vias configured to accept contact tails of ground conductors of the connector.
Abstract:
A printed circuit board includes a plurality of layers including attachment layers and routing layers; and via patterns formed in the plurality of layers, each of the via patterns including first and second signal vias forming a differential signal pair, the first and second signal vias extending through at least the attachment layers; ground vias extending through at least the attachment layers, the ground vias including ground conductors; and shadow vias located adjacent to each of the first and second signal vias, wherein the shadow vias are free of conductive material in the attachment layers. The printed circuit board may further include slot vias extending through the attachment layers and located between via patterns.
Abstract:
본 발명의 일실시예는 디스플레이 소자에서 기판 상에 설치된 연성인쇄회로기판의 구조에 관한 것으로, 어느 하나의 연성인쇄회로기판의 단부의 양극 패드 및 음극 패드 상에 어느 하나의 연성인쇄회로기판에 이웃하는 또 하나의 연성인쇄회로기판의 양극 리드 단자 및 음극 리드 단자가 각각 대응하여 겹쳐지고 서로 전도성 물질에 의해 통전되는 것이다.
Abstract:
Capteur de courant dans un fil conducteur dans lequel : un circuit imprimé comporte un trou (5) le traversant de part en part le long d'un axe vertical pour recevoir le fil conducteur, un noyau magnétique forme un premier anneau magnétique (10) entourant le trou et s'étendant horizontalement entre des couches de métallisation, et chaque spire de chaque première bobine est formée par deux pistes conductrices (44, 46) réalisées, respectivement, dans des couches de métallisation situées au dessus et en-dessous du premier anneau magnétique et raccordées électriquement l'une à l'autre par un plot (48) traversant une couche isolante et passant par l'intérieur de cet anneau magnétique.
Abstract:
A printed solenoid inductor delay line system comprises discrete delay sections, where the inductor is implemented in the form of a printed, spiraling solenoid, with the solenoid axis in the plane of the multi-layer printed circuit board (PCB).
Abstract:
A gap-coupling bus system in which data can be transferred between all modules connected to a bus. The gap-coupling bus system has at least three modules (11-16) which each have at least one transmission/reception circuit, at least three signal lines (21-16) whose one ends are connected to the modules (11-16) respectively, and terminating resistors (31-36) which are connected to the other ends of the signal lines (21-26) and whose resistance values are nearly the same as the characteristic impedances of the signal lines (21-26). The at least three signal lines (21-26) have portions (1-2, 1-3, 2-3, ...) where the signal lines of two different modules among the at least three modules (11-16) are in parallel with each other.