Measurements of crosstalk between closely-packed lossy microstrips on silicon substrates

The measured near-end and far-end crosstalks for closely-packed microstrips are reported. The near-end crosstalk is less than 10% and the far-end crosstalk is less than 5% (of the driven signal) between two microstrips with 10 mu m width and 10 mu m spacing, when the active line is driven by a fast step pulse with approximately 40 ps rise time. Based on their measurements, the authors believe that closely-packed lossy microstrips can be used for high speed digital signal transmission, without much concern of crosstalk.