US Patent No. 10,973,115

SPREAD WEAVE INDUCED SKEW MINIMIZATION


Patent No. 10,973,115
Issue Date April 06, 2021
Title Spread Weave Induced Skew Minimization
Inventorship Robert Bisson, Kanata (CA)
Marko Antonic, Kanata (CA)
Assignee Ciena Corporation, Hanover, MD (US)

Claim of US Patent No. 10,973,115

1. A printed circuit board comprising:a spread weave of fibers having a first direction and a second direction with corresponding fibers spread more in the first direction than the second direction; and
a one or more pairs of traces on the spread weave of fibers, wherein a first difference in dielectric permittivity between traces of a first pair of traces where the first pair of traces is routed in the first direction is less than a second difference in dielectric permittivity between the traces of the first pair of traces where the first pair of traces is routed in the second direction,
wherein the one or more pairs of traces are routed according to a routing design that includes one or more fixed regions on the spread weave of fibers, where routing of traces in the one or more fixed regions is restricted to linear, non-angled routing in the first direction.