Real G Pomerleau

US Patent:

6414850, Jul 2, 2002

Filed:

Jan 11, 2000

Appl. No.:

09/481139

Inventors:

Frederic M. Kozak - Raleigh NC
Real Gislain Pomerleau - Raleigh NC

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H05K 114

US Classification:

361793, 361792, 361782, 361783, 257723, 257724, 257798, 174260, 174262

Abstract:

A small circuit board, preferably having or providing capacitance is mounted on the surface of a main circuit board opposite the surface where a BGA or other integrated circuit is mounted, and within the footprint defined the integrated circuit package. Preferably the small circuit board is formed from multiple interleaved conductive and dielectric layers to provide inherent capacitance in the circuit board itself. Capacitance provided by the small circuit board can be configured by selecting the number and/or size and/or placement of the conductive layers. Discrete devices can be mounted on the small circuit board if desired.

US Patent:

54382971, Aug 1, 1995

Filed:

Dec 30, 1992

Appl. No.:

7/998937

Inventors:

Tawfik Rahal-Arabi - Hillsboro OR
Real Pomerleau - Aloha OR
Martin Rausch - Manning OR
Tim Schreyer - Hillsboro OR

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H01L 2500

US Classification:

327565

Abstract:

A trace having a closed periphery interconnect topology. The closed periphery interconnect topology can take the form of a substantially circular, oval, square, or polygon loop. An electrical signal driven onto the trace propagates in both clockwise and counter-clockwise directions around the loop. Series terminations can be implemented to optimize performance by providing better matching.