Iterative Refinement of Dense Meander Segments in High-Speed Printed Circuit Boards

Inhalt:
In high-speed printed circuit boards (PCBs) crosstalk noise on wires of a bus may cause delay mismatching due to the large number of dense meander segments. However, this effect has not been considered by modern PCB routers. In this paper, we propose a post-processing framework which iteratively refines the routing results from other existing PCB routers. By swapping and detouring the dense meander segments the proposed framework can effectively alleviate accumulated crosstalk noise while respecting pre-defined area constraints. Experimental results show that the proposed framework can achieve more than 85% reduction of the meander segments.