Title :
An analytical approximation for evaluating impact of skew length on radiated emission from differential signal pairs
Author :
Fan, Hongmei ; Zhou, Xiaoxia ; Bhobe, Alpesh ; Yu, Jinghan ; Zhang, Hailong ; Sochoux, Philippe
Author_Institution :
Cisco Syst. (China) R&D Co., Ltd., Shanghai, China
Abstract :
In high speed printed circuit board layout, there usually exist skews between a pair of differential signal traces. In this paper the impact of skew length on electromagnetic interference radiation from differential pairs is investigated. The radiation power is analytically approximated and agreed with numerical simulation tool. It is found that skew control can be done according to the differential pair pitch instead of frequency.
Keywords :
approximation theory; electromagnetic interference; numerical analysis; printed circuit layout; printed circuits; 3-dimensional numerical electromagnetic simulations; EMI; analytical approximation; differential pair pitch; differential signal pairs; differential signal traces; electromagnetic interference radiation; electromagnetic radiation; high speed printed circuit board layout; numerical simulation tool; radiated emission; radiation power; skew control; skew length;
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2012 Asia-Pacific Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-1557-0
Electronic_ISBN :
978-1-4577-1558-7
DOI :
10.1109/APEMC.2012.6237854
