The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1999
Filed:
Mar. 27, 1998
Galen L Carter, Longmont, CO (US);
David A Norte, Westminster, CO (US);
Woong K Yoon, Westminster, CO (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A printed circuit (PC) board-mountable ferrite electromagnetic interference (EMI) filter (702, 1003, 1003') for PC conductors (701, 1001, 1002) of a printed circuit (PC) board (700, 1000) that accommodates large numbers of PC conductors, and is cost-effective. One embodiment of the EMI filter is used with a PC board (700) that routes PC conductors (701) in a step-function (i.e., a 'U'-shaped) pattern. The EMI filter comprises a ferrite body (702) that defines two parallel passageways (708, 709), i.e., has a figure-8 shape in cross section. The portion (710) of the PC board that defines the PC conductor portions extending in the one direction lies in one passageway, whereas the portion (711) of the PC board that defines the PC conductor portions extending in the other direction lies in the other passageway. A different embodiment of the EMI filter is used with a PC board (1000) that routes sets (1001, 1002) of PC conductors in a cross-hatch (i.e., a '#'-shaped) pattern, where the PC conductors end (are interrupted) before intersecting so that each PC conductor comprises two separate straight on-board parts. This EMI filter comprises a ferrite body (1003) that defines two orthogonal sets (1012, 1013) of off-board 'U'-shaped conductors, one set for each orthogonal set of PC conductors with one conductor of a set for each PC conductor of a set. Each PC conductor's corresponding 'U'-shaped conductor interconnects the two straight on-board parts of the PC conductor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile