Estimation of Mode Conversion and Crosstalk Impact from a Single-Ended Aggressor to a Differential Victim using Statistical BER Analysis
Increase in the cost of printed circuit board (PCB) with the increase in layer count has led to the design of PCB stack-ups that have broadside coupled signals. The coupling that occurs between the single-ended signal trace coupled to a differential signal traces at various angles and at multiple instances creates a imbalance in the differential signal line thereby generating common-mode signal at the victim receiver. The periodic routing of single-ended trace also generate Floquet modes where the near end crosstalk (NEXT) peaks impacting the signal at the victim receiver. In this paper, various design parameters that impact the eye opening such as number of coupled sections (which dictates the periodicity), horizontal spacing of victim and aggressor, and signaling speeds are included. Different styles of routing of single-ended trace are studied to quantify the impact of differential-common mode conversion and NEXT at the receiver using statistical bit error rate (BER) analysis. Guidelines for best routing practices are developed for the designer to maintain signal integrity.
A. R. Chada et al., "Estimation of Mode Conversion and Crosstalk Impact from a Single-Ended Aggressor to a Differential Victim using Statistical BER Analysis," Proceedings of the 64th Electronic Components and Technology Conference (2014, Orlando, FL), pp. 2081-2087, Institute of Electrical and Electronics Engineers (IEEE), Sep 2014.
The definitive version is available at http://dx.doi.org/10.1109/ECTC.2014.6897589
64th Electronic Components and Technology Conference (2014: May 27-30, Orlando, FL)
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Bit error rate; Crosstalk; Microstrip lines; Printed circuit boards; Printed circuit design; Printed circuits; Statistical methods; Transient analysis; broadside; Differential signal; Differential signal line; Floquet modes; Horizontal spacing; Near end cross talks; Printed circuit boards (PCB); Single-ended signals; Signal receivers
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