High-speed backplane for optical network product
<<BackSource: Time:2014/8/29 0:00:00
| 【TYPE】： | High-speed backplane for optical network product |
| 【Difficulty】： | More than 320 differential pairs with 3.125G signal. And 640+ differential pairs with 3.125G signal. The PCB size is 653 X 418. The Insertion loss is a big problem with long trace. And return loss is also a problem in case the impedance mismatch. We also considering the crosstalk and EMI. |
| 【Solution】： | Extract Via model and trace model in HFSS. Eye diagram Simulation with HSPICE.S parameter analysis for Insertion loss and return loss. |
| 【Result】： | Reduce the layer from 32 to 28 with good signal quality. It's better for PCB fabrication. |
