Inductor Model

The Inductor Model File Entry dialog box is opened when you add an Inductor Model output file or edit an already specified Inductor Model output file in the Output Files page of the Circuit Settings dialog box. This dialog box allows you specify the parameters to be used in generating the the Broadband Spice model which are discussed in detail below.

NOTE: The Inductor Model Extractor (IME) feature is only available if you have purchased a Broadband Spice Extractor license from Sonnet. Please see your system administrator if you are unsure of the availability of this feature.

Topology: There are two topologies available, the Center Tapped Topology and the Untapped Topology. Select which topology you wish to use from this drop list.

Format: The output data may be formatted in the Spectre, Sonnet Netlist, PSpice or HSPICE format. Select the desired format from this drop list.

Optimization Band: This section of the dialog box only appears if Center Tapped is selected as the Topology. Enter the frequency band over which you wish to optimize your inductor model here by entering the starting frequency of the band in the Start text entry box and the ending frequency in the Stop text entry box. If you wish the software to automatically calculate the optimization band, select the Auto checkbox. If this checkbox is selected, then both of the frequency text entry boxes are disabled and the values used are plus and minus 10% of the frequency where the maximum Q occurs.

Model file name: An automatically generated filename appears in this entry box. For Spectre and PSpice, the filename is your project basename with the appropriate extension. For a Sonnet netlist, the automatically generated filename is your project basename with "IMEnet.son" added. You may use the name which appears or enter another filename in this text entry box. You may specify an absolute or relative path. If no path is specified, the software writes the output file to the same directory in which your source project is saved.

Parameter Combinations (If present): The presently selected parameter combinations are shown in the scroll list. To change the parameter combinations, click on the Select Combinations button. This will open the Select Parameters dialog box and allow you to add and/or delete parameter combinations from the curve group. A separate output file is created for each parameter combination that is selected.

Include comments: Select this checkbox if you wish to include the contents of the Comments page in the output file.

Remember settings checkbox: Turn this on if you wish to retain the values entered above for the next time the dialog box is opened.  

Restore Defaults: Click on this button to change all the settings in this dialog box to the defaults used upon installation of the software.

Advanced: Click on this button to access the Advanced Inductor Model Extraction Options dialog box which allows you to specify additional run options.