DocumentCode :
2622717
Title :
Considerations for magnetic-field coupling resulting in radiated EMI
Author :
Hockanson, David ; Drewniak, James L. ; Dubroff, Richard E. ; Hubing, Todd H. ; Doren, Thomas P Van
Author_Institution :
Sun Microsyst. Comput. Co., Palo Alto, CA, USA
Volume :
2
fYear :
1998
fDate :
24-28 Aug 1998
Firstpage :
808
Abstract :
Parasitic inductance in printed circuit board geometries can worsen the EMI performance and signal integrity of high-speed digital designs. Partial-inductance theory is a powerful tool for analyzing inductance issues in signal integrity. However, partial inductances may not adequately model magnetic flux coupling to EMI antennas because the EMI antennas are typically open loops. Therefore, partial inductances may not always accurately predict radiated EMI from noise sources, unless used in a full-wave analysis such as PEEC. Partial inductances can be used, however, to estimate branch inductances, which can be used to predict EMI. This paper presents a method for decomposing loop or self inductances into branch inductances. Experimental as well as analytical investigations are used to compare branch- and partial-inductances
Keywords :
electromagnetic interference; equivalent circuits; inductance; magnetic fields; magnetic flux; printed circuits; EMI antennas; branch inductances; magnetic field coupling; magnetic flux coupling; parasitic inductance; partial inductance theory; printed circuit board geometries; radiated EMI performance; signal integrity; Coupling circuits; Electromagnetic interference; Geometry; Inductance; Magnetic analysis; Magnetic flux; Magnetic noise; Printed circuits; Signal analysis; Signal design;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Compatibility, 1998. 1998 IEEE International Symposium on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-5015-4
Type :
conf
DOI :
10.1109/ISEMC.1998.750310
Filename :
750310
Link To Document :
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