Impact of FR4 dielectric non-uniformity on the performance of multi-Gb/s differential signals

Impact of FR4 dielectric non-uniformity on the performance of multi-Gb/s differential signals

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....

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Bibliographic Details
Published in:Electrical Performance of Electrical Packaging (IEEE Cat. No. 03TH8710) pp. 243 - 246
Main Authors: Heck, H., Hall, S., Horine, B., Mallory, K., Wig, T.
Format: Conference Proceeding
Language:English
Published: IEEE 2003
Subjects:
Degradation
Dielectric constant
Dielectric materials
Dielectric measurements
Frequency domain analysis
Frequency estimation
Frequency measurement
Mathematical model
Timing
Voltage
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Summary: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.
ISBN:9780780381285
0780381289
DOI:10.1109/EPEP.2003.1250041