The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology.The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information.Clicking on the Add Pins button opens the Create Shape Pin dialog box and clicking on the Ports button opens the Ports dialog box.
This provides a general outline, but be aware that every step does not need to be done for every analysis. Oftentimes, the default values are already set correctly and no action needs to be taken for that step. Detailed descriptions of the functions of all the controls are found in Help, accessed by selecting Sonnet - Help from the Sonnet menu in the Cadence Virtuoso CIW, layout window or Sonnets Cadence Virtuoso Interface main window. You may access specific topics in Help by clicking on the Help button in any dialog box in the Cadence Virtuoso Interface. For a detailed, step by step example, please see the tutorial. When cell is used in the Sonnet environment, it is referring to the smallest part of the analysis grid used in subsectioning your circuit. Once the Sonnet menu appears in the layout window, you select Sonnet - Create SonnetEM view to open the Create SonnetEM view from Layout View dialog box which allows you to create the SonnetEM view. To open the interface after the SonnetEM view has been created, open the SonnetEM view in a layout window, load the Sonnet menu ( Launch - Sonnet ), then select Sonnet - Open Interface Application to open the interface. The Cadence Virtuoso Interface main window, shown below, is used to perform the rest of the tasks in the design flow. You use the Substrate File Setup dialog box, shown below, to control these settings. You open the dialog box by clicking on the Edit Substrate button in the Substrate section of the Cadence Virtuoso Interface. For a detailed explanation of the controls and settings, please click on the Help button in the Substrate File Setup dialog box or on the link above. The substrate is on the metal bottom of the box and represents the ground plane. Above the substrate are stacked the dielectric layers and metal levels. The top and bottom of the box may be assigned any metal type defined in the geometry project. You open the dialog box by clicking on the Options button in the Analysis Box section of the Cadence Virtuoso Interface main window. You may enter an Adaptive Band Sweep (ABS) or list of frequencies directly in the main interface window, as pictured below. Other types of sweeps must be entered in the Frequencies dialog box opened by clicking on the More button in the Frequencies section of the interface. If you enter additional frequency sweeps in the Frequencies dialog box then all of the sweeps defined for your analysis are displayed in the Frequencies dialog box. In that case, a message appears in the main interface directing you to the Frequencies dialog box. There are four different types of models available in the main interface window: S-Parameters in Touchstone format, a Broadband Spice model in Spectre format, a N-Coupled Line model, and an Inductor model. Additionally, you may select S-Parameters in Spectre format in the Advanced Model Options dialog box, opened when you click on the Options button. All pin types, with the exception of symbolic, may be used in Virtuoso when you are using Sonnet as your electromagnetic solver. Pins can be converted to standard box-wall ports, co-calibrated ports, delta gap ports, and via ports.
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