[朝闻天下]中国商务部 中方必将对301调查采取必要措施

Ebook - EN - Emc Of Future High Speed Digital Designs - Presentation - 2000OOOO1

PCB Design Conference - East Keynote Address
September 12, 2000

EMC ASPECTS OF FUTURE HIGH SPEED DIGITAL DESIGNS
By Henry W. Ott
Henry Ott Consultants Livingston, NJ 07039 (973) 992-1793

www.hottconsultants.com

hott@ieee.org HOC
ELECTROMAGNETIC COMPATIBILITY

2000 Henry W. Ott

SYS - 01008

ELECTROMAGNETIC COMPATABILITY DRIVING FORCES

Regulations

Technology

EMC

Signal Integrity
2000 Henry W. Ott

Time to Market HOC
ELECTROMAGNETIC COMPATIBILITY

DIG 00269

DIFFERENTIAL - MODE RADIATION
ted Emission Radia

PCB

Signal

I Ground

E = K1f2AI0
1998 Henry W. Ott

HOC
ELECTROMAGNETIC COMPATIBILITY

ADIG - 01028

CONTROLLING DIFFERENTIAL-MODE EMISSIONS
! Reduce Loop Area ― PCB Technology Has Not Keep Up With the Increase in Frequency Squared ! Cancellation Techniques ― Canceli