Dielectric-filled transmission lines

Details Dielectric-filled transmission lines Dielectric-filled transmission lines

2004-07-13

2008-10-07

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Plural channel systems

C333S238000

Reexamination Certificate

active

07432776

ABSTRACT:
A printed circuit board transmission line has an outer conductive wall surrounding an inner dielectric core. The transmission line may be disposed inside a grounded shielding to provide a form of coaxial conductor that mitigates cross talk from adjacent transmission lines and EMI. Further, groups of dielectric-core transmission lines may be disposed within a single grounded shield. For example, edge coupled differential pairs may be disposed in parallel with each other on a plane defined by a layer of the printed circuit board, i.e., side-by-side. Further, broadside-coupled differential pairs of dielectric-core transmission lines may be disposed in parallel with each other in a stack which is orthogonal with the plane defined by a layer of the printed circuit board, i.e., one on top of the other. Further, a plurality of dielectric-core transmission lines which may include all or ones of single-ended lines and differential pairs may be disposed within a single grounded shield.

REFERENCES:
patent: 6724283 (2004-04-01), Bergstedt et al.
patent: 6798320 (2004-09-01), Ida et al.

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