[SI-LIST] May 2004 IEEE EMC Santa Clara Valley Society Chapter Meeting

From: Chuck Troia <ctroia@xxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Date: Tue, 11 May 2004 09:11:25 -0700
Please Join Us!

May 2004 IEEE EMC Santa Clara Valley Society Chapter Meeting
This month's Presentation : "EMI Considerations in Selection of Ethernet 
Magnetics"

Presenter: Neven Pischl
Date:  Tuesday, May 11, 2004
Time:   5:30 PM Social   7:00 PM Presentation
Place:  Applied Materials Bowers Cafeteria
         3090 Bowers Ave.
         Santa Clara, CA 95051-0804
Refreshments: Hot Chicken and Pork Tamales; Togo's sandwiches
Fee: No Charge. All are Welcome!


Abstract:

Ethernet devices use magnetics between the transceiver and Ethernet cable. 
Magnetics include center-tapped transformers, autotransformers, and 
common-mode chokes. Newer Ethernet devices use magnetics to provide 48V 
power. Integrated connectors, with built-in magnetics, are gaining 
popularity. The characteristics of these components are critical for EMI 
suppression.

It is completely impossible to judge the EMI characteristics from 
information currently available in the magnetics data sheets. Magnetics EMI 
properties can be measured with a network analyzer on a 50 ohm test jig, 
but it should be kept in mind that the system-level performance may differ. 
Magnetics cannot be completely characterized without knowing the system 
characteristics. Also, test results depend on the test methods that are not 
yet standardized.

The presentation explains the main factors that define EMI properties of 
Ethernet magnetics, in commonly used configurations. A bench-level test 
method for magnetics characterization is described, and a demonstration 
will be given. The focus will be on Ethernet magnetics, but the concepts 
apply generally to WAN and LAN magnetics.

About the presenter:

Neven Pischl has 19 years of EMC and related experience in R&D, Aerospace, 
Consumer Electronics, and ITE, covering many areas of EMC compliance and 
high-speed design. He holds an MSEE degree, specialized in microwave 
measurements, NARTE EMC-Engineer certification, and two US patents related 
to differential signaling. Currently his main focus is design for high 
immunity, low noise and low emission ITE containing high-speed digital and 
sensitive analog circuitry. He is a Principal Engineer at Broadcom 
Communications in San Jose, CA.
To contact Neven:  npischl@xxxxxxxxxxxxx


Thanks,

Dale Gutierrez, Secretary
EMC/SCV Chapter
E-mail: dalegut@xxxxxxxx

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[SI-LIST] May 2004 IEEE EMC Santa Clara Valley Society Chapter Meeting

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