• Document: Introduction to ANSYS SIwave
  • Size: 1.78 MB
  • Uploaded: 2018-10-11 14:28:40
  • Status: Successfully converted


Some snippets from your converted document:

Workshop 7: SYZ for SI 15.0 Release Introduction to ANSYS SIwave SIwave SYZ Analysis for SI • In this example you will learn and use the following skills: – Import an Ansoft Neutral Format (ANF) file and component file (CMP) and create an SIwave project – Place ports on selected nets using an automated process – Run an SYZ simulation and plot results for transmission, reflection, and crosstalk – Export a Full-Wave SPICE sub-circuit – Modify trace geometry to reduce crosstalk • Import the .ANF file – Click File > Import > ANF • Navigate to the file named: siwave_board.anf • Click Open • Import the .CMP – Click File > Import > Component File • Navigate to the file named: siwave_board.cmp • Click Open – If there is a warning message click the Yes to All button to overwrite existing names WS7-2 © 2013 ANSYS, Inc. June 24, 2013 Release 15.0 February 23, 2009 Inventory #002593 SYZ Parameters For Signal Integrity • Validation Check – It is a good idea to do a validation check before you start working on any design in SIwave for the first time – The validation check tests for self-intersecting polygons, disjoint nets, overlapping (DC-shorted) nets and nets with overlapping vias. – This helps you avoid finding layout errors after all the setting up ports and other solution settings. – To do a validation check: • Click Tools > Validation Check…. – Click the OK button to start the validation • There are no layout and DRC related problem with this design. • Notice that there are 8 Misalignments – Repeat this process to verify that the Auto Fix worked • Click OK. WS7-3 © 2013 ANSYS, Inc. June 24, 2013 Release 15.0 February 23, 2009 Inventory #002593 SYZ Parameters For Signal Integrity • Set Visibility options – Using the checkboxes in the Layers workspace, turn on full visibility of all layers – Click the colored rectangles next to each layer name to control whether the geometry is shown in outline or filled form. – Click View > Geometric Elements > All > On – Click View > Circuit Elements > All > On WS7-4 © 2013 ANSYS, Inc. June 24, 2013 Release 15.0 February 23, 2009 Inventory #002593 SYZ Parameters For Signal Integrity • Setting Simulation Global Options – Click Simulation > SIwave > Options • Plane Void Meshing: Automatically determine which voids to mesh • Mesh Refinement: Automatic • Ignore nets named “DUMMY” or “Unused” during simulation:  Checked • Perform ERC during simulation setup:  Checked • Exclude non-functional pads…:  Checked • Coupling – Coplane, Split-plane, Cavity field, Trace:  Checked – Note: These are the default simulation settings. • Click OK Note: If you have a HPC license this is where you enable it. WS7-5 © 2013 ANSYS, Inc. June 24, 2013 Release 15.0 February 23, 2009 Inventory #002593 SYZ Parameters For Signal Integrity • Add ports to the nets of interest – Ports are elements that enable the entry and exit of electromagnetic energy in a design. We will add ports at both ends of two coupled traces. – In the Single Ended Nets workspace, scroll down until you find the ST_CTL and ST_ERROR nets – Place check marks next to

Recently converted files (publicly available):