Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Reexamination Certificate
2006-07-24
2008-11-11
Norris, Jeremy C (Department: 2841)
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
C361S792000
Reexamination Certificate
active
07449641
ABSTRACT:
A high-speed signal transmission structure having parallel disposed and serially connected vias is disclosed. The structure is applicable to a multi-layered circuit board such as a high-speed digital circuit board for forming a high-speed signal transmission circuit on the high-speed digital circuit board. The structure includes a pair of parallel disposed and serially connected vias for connecting an upper conductive circuit installed on an upper layer of the multi-layered circuit board and a lower conductive circuit installed on a lower layer of the multi-layered circuit board. Compared with the prior art, an open stub formed by the remaining portion of the vias has become shorter, thereby reducing a resonance effect affecting the quality of signal transmission.
Corless Peter F.
Edwards Angell Palmer & & Dodge LLP
Inventec C'orporation
Jensen Steven M.
Norris Jeremy C
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