Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-07-12
2011-07-12
Arbes, C. J (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S832000, C029S840000, C029S852000, C174S255000, C333S238000
Reexamination Certificate
active
07975378
ABSTRACT:
Described are methods for fabricating high speed metallic electrical interconnects for printed wiring board for high speed transmission of a data signal across an interconnect in a systems. The trench under electrical signal line is made using the separate dielectric layer having through holes opened through that said dielectric layer and aligned with electrical signal line. The layer with through holes aligned with electrical signal line sandwiched in between layer carrying the electrical signal line and a layer carrying ground conducting line for the case of microstrip-type transmission line. The two separate layers with the through-holes opened and aligned with the electrical signal line are needed for the stripline-type transmission line. Multi-layers board having high speed electrical signal lines can be made utilizing the configuration described.
REFERENCES:
patent: 6875921 (2005-04-01), Conn
patent: 7663064 (2010-02-01), Dutta et al.
patent: 7719105 (2010-05-01), Dutta
patent: 7755445 (2010-07-01), Dutta et al.
Arbes C. J
Banpil Photonics, Inc.
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