Bidirectional non-solid impedance controlled reference plane

Details Bidirectional non-solid impedance controlled reference plane Bidirectional non-solid impedance controlled reference plane

H - Electricity

01

P

H01P 3/08 (2006.01) H05K 1/02 (2006.01) H05K 1/00 (2006.01)

Patent

CA 2250206

A circuit board includes a plurality of signal conductors (60, 62, 64) and a grid (20). The grid (20) has a pattern of conductive material which forms cell structures oriented along a first axis (Y). The grid pattern is configured so that when the signal conductors (60, 62, 64) are oriented parallel to the first axis (Y), they overlay a substantially constant area of the conductive material regardless of where the signal conductors (60, 62, 64) are positioned. The capacitance of the signal conductors (60, 62, 64) is thereby controlled so that the impedances of the signal conductors (60, 62, 64) can be maintained at a high level.

Une carte de circuit imprimé comprend une pluralité de conducteurs (60, 62, 64) de signaux ainsi qu'une grille (20). La grille (20) présente un motif en matériau conducteur formant des structures cellulaires orientées le long d'un premier axe (Y). Le motif de la grille est configuré de manière que, lorsque les conducteurs (60, 62, 64) de signaux sont orientés parallèlement au premier axe (Y), ils recouvrent une surface sensiblement constante du matériau conducteur indépendamment de la position des conducteurs (60, 62, 64) de signaux. La capacité des conducteurs (60, 62, 64) de signaux est ainsi commandée de manière que les impédances des conducteurs (60, 62, 64) de signaux puissent être maintenues à un niveau élevé.

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