Galen Leslie Carter
Engineers at 4, Longmont, CO
License number
Colorado 56956
Issued Date
Jun 3, 1982
Renew Date
Jun 3, 1982
Type
Engineer Intern
Address
Address
441 E 4Th St E 4th, Longmont, CO 80501
Professional information
Printed-Circuit Board-Mountable Ferrite Emi Filter
US Patent:
5801597, Sep 1, 1998
Filed:
Feb 5, 1997
Appl. No.:
8/795431
Inventors:
Galen L. Carter - Longmont CO
David A. Norte - Westminster CO
Woong K. Yoon - Westminster CO
David A. Norte - Westminster CO
Woong K. Yoon - Westminster CO
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H03H 709, H04B 328
US Classification:
333 12
Abstract:
A printed circuit (PC) board-mountable ferrite electromagnetic interference (EMI) filter (702, 1003, 1003") for striplines (701, 1001, 1002) of a printed circuit (PC) board (700, 1000) that accommodates large numbers of striplines, and is cost-effective. One embodiment of the EMI filter is used with a PC board (700) that routes striplines (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 stripline portions extending in the one direction lies in one passageway, whereas the portion (711) of the PC board that defines the stripline 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 striplines in a cross-hatch (i. e. , a "#"-shaped) pattern, where the striplines end (are interrupted) before intersecting so that each stripline comprises two separate straight on-board parts.
Printed-Circuit Board-Mountable Ferrite Emi Filter
US Patent:
5914644, Jun 22, 1999
Filed:
Mar 27, 1998
Appl. No.:
9/049259
Inventors:
Galen L. Carter - Longmont CO
David A. Norte - Westminster CO
Woong K. Yoon - Westminster CO
David A. Norte - Westminster CO
Woong K. Yoon - Westminster CO
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H03H 709, H04B 328
US Classification:
333 12
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.