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The defense date of the thesis is 2007-09-13
The current date is 2020-05-29
URN etd-0912107-191306 Statistics This thesis had been viewed 3485 times. Download 5 times. Author Szu-shun Pai Author's Email Address No Public. Department Electrical Engineering Year 2006 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 63 Title STRATEGY OF EMI REDUCTION FOR POWER/
GROUND PLANES IN MULTI-LAYER PCB DESIGN
Keyword EMI multi-layer PCB multi-layer PCB EMI Abstract In the recent years, all famous IT companies aim at EMI requirements more and more strict quality, from meeting limit to -3 db then -6dB step by step. Generally EMI solutions are in the clock trace with R/C or added metal enclosure, if we don’t raise the cost and don’t influent the quality in the EMI countermeasure. It is very difficult to meet FCC part 15 class B or EN55022 Class B radiation requirement under 6dB limit.
The Power Delivery System is generally considered quite complex and not easy to analyze, but all the circuits is related to it. This thesis gives different thinking direction to ensure power quality or integrity to be the first importance. On purpose is to lower power noise, increase operational range, and decrease noise.
The present high-speed PCB analytic software has its applied limit, so to control the most important influential factor and characteristics will help us analyze and design.
If we can notice the issue of multi-layer PCB stack up and power integrity at the design stage, we can solve this problem in the beginning, the developing time will be shortened as well as the times of changing layout will be decreased for the current procedure of product development. We will introduce EMI solutions for multi-layer PCB stack-up and use Power Integrity to decrease EMI of VoIP (voice over IP) products.
In this thesis we study a practical EMI case and use the layout skill to reduce 6dB radiated emission. Namely, it decreases one half energy of radiating disturbance.
Advisor Committee Chi-fang Huang - advisor
Files Date of Defense 2007-07-31 Date of Submission 2007-09-13