Browse Prior Art Database

Circuit for Suppressing Common-Mode Energy on Unshielded Twisted-Pair Media

IP.com Disclosure Number: IPCOM000104524D
Original Publication Date: 1993-Apr-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 1 page(s) / 46K

Publishing Venue

IBM

Related People

Authors:
Bevill Jr, B Boggs, AK Conner, D [+details]

Abstract

The disclosed circuit provides the means by which the common mode energy incident on a 4-wire communications link may be suppressed in order to meet the Electro-Magnetic (EM) emission requirements specified by various licensing agencies. The topology, a 2-wire coupled inductor for each wire pair followed by a 4-wire coupled inductor for both wire pairs, is superior in performance to a filter fabricated from only 2-wire devices or 4-wire devices.