Via Wizard 3.1
3D Via Design
History of the Via
Vias are common entities to just about every electronic application involving a layered Printed Circuit Board or Package. Their purpose is to provide electrical connectivity between different layers. Originally, vias had little to no affect as a signal passed through them. As data rates increased, signal risetimes decreased and vias could no longer be considered electrically insignificant. Today, accurate via modeling is critical to Signal Integrity analysis of High Speed Interconnects Vias by Design
There are many factors which make via performance different from design to design. Stackup, pad shape, pad size, antipad shape, antipad size, registration (drill center offset), and plating can all affect a via's performance. Additionally, there are different types of vias such as Plated Through Hole, Buried, Blind and Backdrilled. Each of these types has a cost versus performance trade-off. Location of vias is also very important. For good signal integrity, it is important to have sufficient ground vias nearby for return path. Differential vias must also be spaced properly to ensure minimal impedance mismatch. Electrical Modeling
When designing high performance interconnects, it is important to accurately characterize the vias in the system. Accurate via models should be obtained by simulating using a 3D field solver with all relevant geometry modeled. Fields may be viewed to gain insight into electrical behavior and models may be exported in the form of Touchstone or Spice subcircuits. Via transitions should be examined individually to ensure optimal performance and also verified as a component in a full channel model. Via Wizard
The Via Wizard is a powerful tool that allows for quick setup of via models in the 3D field solver HFSS. Using a straight-forward GUI, a user can enter all parameters necessary to create an arbitrary via array. Most projects will be launched ready to solve in HFSS however the user may easily modify or add to the geometry created by the wizard. All of the design types list above may easily be generated and most geometry is parameterized. The Via Wizard is available free of charge to all HFSS customers.
好東西，用了蠻久了
好東西
最近正在看via的分析，下下來仿一下，多謝分享。
非常感謝，謝謝！
Good Boy
有沒有manual 啊!
