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
J. L. Drewniak et al., "Considerations for Magnetic-Field Coupling Resulting in Radiated EMI," Proceedings of the 1998 IEEE International Symposium on Electromagnetic Compatibility, 1998, Institute of Electrical and Electronics Engineers (IEEE), Jan 1998.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.1998.750310
1998 IEEE International Symposium on Electromagnetic Compatibility, 1998
Electrical and Computer Engineering
Keywords and Phrases
EMI Antennas; Branch Inductances; Electromagnetic Interference; Equivalent Circuits; Inductance; Magnetic Field Coupling; Magnetic Fields; Magnetic Flux; Magnetic Flux Coupling; Parasitic Inductance; Partial Inductance Theory; Printed Circuit Board Geometries; Printed Circuits; Radiated EMI Performance; Signal Integrity
Article - Conference proceedings
© 1998 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.