Circuit board design

Details Circuit board design Circuit board design

2003-08-15

2008-12-02

Lam, Cathy (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

C428S295700, C428S297400, C428S298400, C428S299400, C174S255000, C361S748000

Reexamination Certificate

active

07459200

ABSTRACT:
A circuit board is described where the fiberglass fiber pattern as been modified than what is found in conventional FR4 circuit boards. In one embodiment, the sets of fiberglass fibers are disposed in a zig-zag or herringbone manner. In one use, when a pair of conductors are disposed onto or into the board, the material surrounding a first conductor tends to be similar to the material surrounding a second conductor. Doing so may reduce differential to common mode conversion between the conductors.

REFERENCES:
patent: 3803563 (1974-04-01), Carlino
patent: 4568582 (1986-02-01), Kikuzawa et al.
patent: 4868038 (1989-09-01), McCullough et al.
patent: 5068061 (1991-11-01), Knobel et al.
patent: 5244378 (1993-09-01), Bross et al.
patent: 6549179 (2003-04-01), Youngquist et al.

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