A 4 Gb/s 3-bit Parallel Transmitter With the Crosstalk-Induced Jitter Compensation Using TX Data Timing Control

A TX Clock Timing Technique for the CIJ Compensation of Coupled Microstrip Lines

“…When two signals propagate through two-coupled microstrip transmission lines, the propagation velocity of the odd mode is slightly faster than that of the static mode. Similarly, the propagation velocity of the even mode is slightly slower than that of the static mode [6]. This difference in the propagation velocity induces CIJ at RX.…”

“…The crosstalk between the multi-parallel transmission lines induces the crosstalk-induced jitter (CIJ) at receiver (RX), which is a bottleneck in increasing the transmission data rate [1][2][3][4][6][7][8]. When two signals propagate through two-coupled microstrip transmission lines, the propagation velocity of the odd mode is slightly faster than that of the static mode.…”

“…Several approaches are published to reduce crosstalk and CIJ in the multi-parallel transmission lines, by using either the line patterns in PCB [1][2][3][4][5] or the circuit techniques [6][7][8]. In [6] (the authors' prior work), the signals are sent out at transmitter (TX) at different 58times depending on the signal modes (odd, even, static), so that the signals with different modes arrive at RX at the same time.…”

“…In [6] (the authors' prior work), the signals are sent out at transmitter (TX) at different 58times depending on the signal modes (odd, even, static), so that the signals with different modes arrive at RX at the same time. The odd mode signals are sent out slightly later than the static mode signals.…”

“…In this work, the CIJ component is compensated for at TX, in the same way as in the authors' prior work [6]. Because the digital signal which is free from attenuation and distortion is used at TX, it is much easier to process the digital signal at TX than to process the received analog signal at RX [7].…”