Technical Articles

Efficient Sensitivity-Aware Assessment of High-Speed Links Using PCE and the Implications for COM

While a channel may pass a test, the remaining margin and thus its resilience against geometry or material variation in production may not be observable. However, such variations are critical because they may impede the performance or cause high volume manufacturing (HVM) products to fail. This coalition of authors has developed and demonstrated a polynomial chaos expansion (PCE) flow to analyze a full-featured 100GBASE-KR4 link starting from geometry specification to Channel Operating Margin (COM) margin at the receiver. Read on to see their award winning paper on the subject.

Read More

Comparing Embedded Coplanar Waveguide and Stipline for Multi-Layer Boards

It is important in high-speed digital applications to decrease the form factor and increase signal density by reducing isolating metal layers, all while preserving comparable crosstalk, loss and dispersion at the frequency of interest. This paper takes a look at how you can do that by showing how coplanar waveguide with smaller form-factor outperforms stripline in isolation and coupling.

Read More