Issue link: https://iconnect007.uberflip.com/i/1505220
AUGUST 2023 I DESIGN007 MAGAZINE 49 can be used to reduce the capacitance of the component pads and adjustments of distance between the signal vias, and anti-pad size can be used to reduce the inductance of vias as shown in Figure 5. e original geometries of the discontinui- ties are shown in the top row and the adjusted more optimal or less reflective discontinuities are shown in the bottom row. e results of such small adjustments are shown in Figure 6. Return and insertion loss and eye diagram of the original link are shown in the top row and corresponding results for the adjusted link are shown in the bottom row. What a difference such small adjustments make. e link passes the return loss mask (black line) and the eye is larger, offering more margin for possible random unpredictable things. e analyzer can be used for control of all types of stan- dard compliance metrics (RL, IL, Fitted IL, ILD, PSXT, MDXT, ICN, ICR). at includes crosstalk analysis. Local crosstalk evaluation can be done in the ERC mode as illustrated in Figure 7. Figure 7: Crosstalk evaluation showing potential aggressor links. Figure 8: Frequency and time domain analysis shows a variety of metrics.