Electromagnetic interference (EMI) collar and method for use...

Details Electromagnetic interference (EMI) collar and method for use... Electromagnetic interference (EMI) collar and method for use...

2008-09-05

2009-10-06

Gushi, Ross N (Department: 2833)

Electrical connectors

Electromagnetic or electrostatic shield

Resilient conductive means providing additional electrical...

C439S607200, C029S874000

Reexamination Certificate

active

07597590

ABSTRACT:
An EMI collar is provided that is configured to be secured about a housing of a pluggable optical transceiver module. The configuration of the EMI collar and the method by which the collar is attached to the housing of the transceiver module ensures that the collar will not be damaged when the transceiver module housing is inserted into a cage. Ensuring that the collar will not be damaged during insertion ensures that electrically conductive contact points on the collar will not be eliminated by insertion of the housing into a cage. In addition, dimples, or indentations, formed on the spring fingers of the EMI collar result in additional electrically conductive contact points on the fingers that result in a reduction in the size of the maximum EMI aperture dimension of the collar. Reducing the maximum EMI aperture dimension of the collar greatly improves the ability of the collar to attenuate EMI signals, even EMI signals having high frequencies.

REFERENCES:
patent: 5766041 (1998-06-01), Morin et al.
patent: 6366380 (2002-04-01), Chesavage
patent: 6817782 (2004-11-01), Togami et al.
patent: 7195404 (2007-03-01), Dudley
patent: 7351090 (2008-04-01), Moore
patent: 2007/0237489 (2007-10-01), Sasser et al.
patent: 2008/0207039 (2008-08-01), Moore et al.

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