A method for charactering EMI coupling paths in complex systems is presented. While it is relatively easy to determine the EMI antenna structures or the sources of EMI, it is often quite difficult to identify, and even more difficult to quantify coupling paths. This paper introduces a measurement-based method to quantify EMI coupling paths, and the source strengths can be indirectly determined by applying linear system theory. Circuit design guidelines, e.g., the permissible even-mode current in a differential signal, can be derived with the knowledge of the coupling path and EMI limits. Moreover, the EMI can be better predicted with the knowledge of the coupling paths, and the EMI source properties simulated with IBIS or SPICE circuit level simulations.
S. Sun et al., "A Method for Charactering EMI Coupling Paths and Source Properties in Complex Systems," Proceedings of the IEEE International Symposium on Electromagnetic Compatibility (2006, Portland, OR), vol. 1, pp. 114-118, Institute of Electrical and Electronics Engineers (IEEE), Aug 2006.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2006.1706275
IEEE International Symposium on Electromagnetic Compatibility (2006: Aug. 14-18, Portland, OR)
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Common Mode Current; Coupling Path; Evenmode Currents; Transfer Impedance; Antenna Arrays; Computer Simulation; Electric Connectors; Integrated Circuit Layout; Large Scale Systems; Linear Systems; Signal Interference; EMI; Evenmode Current
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International Standard Serial Number (ISSN)
Article - Conference proceedings
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