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4. Guided waves
Many EMC problems involve the electromagnetic behavior of lines, or the "bizarre" guides provided by housings with openings. Branin, a disciple of Kron, developed a line model that has since been used in SPICE software and elsewhere: the Branin model. Here we show how it works and how it can help us solve our EMC problems.
4.1 Principle for all modes
Assuming that a propagation medium is homogeneous, all we need to do is describe the waves on the boundary conditions to know the entire history of the wave from the point at which it was emitted to the point at which it is received. In fact, this is the assumption we use every day: when we receive information, we implicitly assume that it has not been modified since it was transmitted! Referring back to line...
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Guided waves
Notion of far field
Bibliography
Websites
Ibis Specifications of the different IBIS standards on http://www.eda.org/ibis/home/specs/specs.htm (page consulted on 10/28/10)
IEC specifications for various standards modeling components (IEC 62433 project), emission measurement methods (IEC 61967) and immunity (IEC 62132) on
Standards and norms
International Electrotechnical Commission IEC http://www.iec.ch/
- EMC IC modelling – Part 1: General modelling framework IEC 62 433-1 47A/840/DTS. - IEC 62433 - (2010)
- Integrated circuits – Measurement of electromagnetic emissions, 150 kHz to 1 GHz – Part 1: General conditions and definitions IEC 61967-1 - IEC 61967-1 - (2002-03) ...
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