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Serpentine Microstrip Lines With Zero Far-End Crosstalk for Parallel High-Speed DRAM Interfaces

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6 Author(s)
Kyoungho Lee ; Dept. Electrical Engineering, Pohang University of Science and Technology, Pohang, Korea ; Hae-Kang Jung ; Hyung-Joon Chi ; Hye-Jung Kwon
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Serpentine microstrip lines are proposed to eliminate the far-end crosstalk in parallel high-speed interfaces by increasing the capacitive coupling ratio to equal the inductive coupling ratio. Zero far-end crosstalk voltage waveform and zero crosstalk-induced jitter (CIJ) were achieved on an FR4 printed circuit board, by adjusting the unit section length of the serpentine structure. Application of the proposed serpentine microstrip lines to the 2-drop stub series terminated logic DRAM channel increased the maximum data rate from 0.9 to 1.4 Gb/s and reduced CIJ by ~ 78 ps at 3.3 Gb/s.

Published in:

IEEE Transactions on Advanced Packaging  (Volume:33 ,  Issue: 2 )