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Browse Prior Art Database

Bridge Metal to reduce EMI Radiated noise around Memory Cover

IP.com Disclosure Number: IPCOM000016206D
Original Publication Date: 2002-Oct-30
Included in the Prior Art Database: 2003-Jun-21
Document File: 2 page(s) / 125K

Publishing Venue

IBM

Abstract

Disclosed is a device for reducing EMI radiated noise around memory cover. By attaching Brige Metal with fingers over DIMM memory connector, memory cover contacts with signal GND on mother board effectively, therefore EMI radiated noise between North Bridge and main memory can be reduced. Formerly adding fingers or gaskets around memory cover is a general way to ground memory cover. But it is difficult to reduce EMI radiated noise if there is not enough space for fingers or gaskets. Bridge Metal is a thin device with two fingers to contact with the backside of DIMM cover(Fig.1). This Bridge Metal has three legs which are soldered with signal GND on mother board. Fig.2 shows how to attach Bridge Metal. As customers sometimes open DIMM cover to add or change memory module, Bridge Metal is designed not to hinder memory change operation. By attaching Bridge Metal over DIMM connector, EMI radiated noise can be reduced. Fig.1 Brige Metal 1 Fig.2 Around Memory Cover

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Bridge Metal to reduce EMI Radiated noise around Memory Cover

Disclosed is a device for reducing EMI radiated noise around memory cover. By attaching Brige Metal with fingers over DIMM memory connector, memory cover contacts with signal GND on mother board effectively, therefore EMI radiated noise between North Bridge and main memory can be reduced. Formerly adding fingers or gaskets around memory cover is a general way to ground memory cover. But it is difficult to reduce EMI radiated noise if there is not enough space for fingers or gaskets. Bridge Metal is a thin device with two fingers to contact with the backside of DIMM cover(Fig.1). This Bridge Metal has three legs which are soldered with signal GND on mother board. Fig.2 shows how to attach Bridge Metal. As customers sometimes open DIMM cover to add or change memory module, Bridge Metal is designed not to hinder memory change operation. By attaching Bridge Metal over DIMM connector, EMI radiated noise can be reduced.

Fig.1 Brige Metal

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Fig.2 Around Memory Cover

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