Modeling Techniques for Discrete Passive Components to Include Parasitic Effects in EMC Analysis and Design

Circuit modeling techniques have been devel­ oped to account for the parasitic behavior of discrete passive components (resistors, capaci­ tors, inductors) for frequencies up to 1 GHz using manufacturers data and simplified measure­ ment techniques. The resultant circuit models can be used both with computer-aided-analysis/ design/synthesis programs (e.g., NCAP, SPICE, SCEPTRE) and with hand-held calculators to ac­ curately account for appropriate responses in the frequency domain. Thus, use of these tech­ niques will provide more accurate designs for EMC and more precise EMI prediction capabilities particularly at the printed circuit board (pcb) level.