Printed circuit board

Details Printed circuit board Printed circuit board

2006-09-01

2009-02-17

Tan, Vibol (Department: 2819)

Wave transmission lines and networks

Coupling networks

With impedance matching

C333S001000, C333S260000, C333S263000

Reexamination Certificate

active

07492234

ABSTRACT:
A printed circuit board (PCB) includes at least one signal layer, a ground layer, at least two signal lines, and at least one grounded line. The signal lines are arranged on the signal layer for transmitting signals. The grounded line is arranged on the signal layer and between the signal lines. A plurality of vias are defined in the grounded line, and the vias are connected to the ground layer. A distance between each two adjacent vias is so arranged that a resonant frequency of an electromagnetic wave transmitted on the grounded line must greater than a highest frequency of the signals transmitted on the signal lines. A related method for designing the PCB is also provided.

REFERENCES:
patent: 5003273 (1991-03-01), Oppenberg
patent: 5945886 (1999-08-01), Millar
patent: 7154356 (2006-12-01), Brunette et al.
patent: 2005/0199422 (2005-09-01), Hashim et al.
patent: 2006/0255877 (2006-11-01), Jiang et al.
patent: 2007/0103251 (2007-05-01), Fan et al.
patent: 2007/0205847 (2007-09-01), Kushta et al.

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