Vertical transitions, printed circuit boards therewith and...

Details Vertical transitions, printed circuit boards therewith and... Vertical transitions, printed circuit boards therewith and...

2006-10-10

2011-10-11

Nguyen, Hoa C (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C174S262000, C361S780000, C361S799000, C361S800000, C361S816000

Reexamination Certificate

active

08035992

ABSTRACT:
Provided are vertical transitions which have the high electrical performance and the high shielding properties in the wide frequency band in a multilayer PCB, printed circuit boards with the vertical transitions and semiconductor packages with the printed circuit boards and semiconductor chips. In vertical transitions for a multilayer PCB, a wave guiding channel is a conductor which includes at least more than one of signal vias201, an assembly of ground vias202surrounding the signal via, ground plates from conductor layers of the PCB connected to the ground vias, closed ground striplines205connecting the ground vias and power supply layer.

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