Improving high-speed SerDes performance using passive microwave filters along package traces

Lab measurement and simulation results are presented to show how passive capacitive microwave filters along flip-chip package traces can be used to overcome the capacitive discontinuity at the output port of SerDes transceivers to improve link performance. The technique is further developed to demonstrate its ability to shape the near-end eye pattern to improve its height and/or jitter at different data rates up to 17Gbps. The benefits of the technique for devices which deploy many 10´s or 100´s of SerDes links are highlighted.