Title :
Impact of FR4 dielectric non-uniformity on the performance of multi-Gb/s differential signals
Author :
Heck, Howard ; Hall, Steohen ; Horine, Bryce ; Mallory, Kenneth ; Wig, Timothy
Author_Institution :
Intel Corp., Hillsboro, OR, USA
Abstract :
Phase skew in high speed differential signals caused by local spatial variation in dielectric constant is presented. A simple mathematical model that allows estimation of the impact on multi-Gb/s signaling links is developed, along with HSpice models that correlate to frequency domain measurements. Options for mitigating the impacts are also discussed.
Keywords :
dielectric materials; network analysis; permittivity; printed circuit design; FR4 dielectric nonuniformity; HSpice models; frequency domain measurements; high-speed differential signals; local dielectric constant spatial variation; phase skew; physical PCB structure; Degradation; Dielectric constant; Dielectric materials; Dielectric measurements; Frequency domain analysis; Frequency estimation; Frequency measurement; Mathematical model; Timing; Voltage;
Conference_Titel :
Electrical Performance of Electronic Packaging, 2003
Conference_Location :
Princeton, NJ, USA
Print_ISBN :
0-7803-8128-9
DOI :
10.1109/EPEP.2003.1250041
