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Where To Find This Example

AWR Version 14

Select Help > Open Examples... from the menus and type either the example name listed above or one of the keywords below.

Or in Version 14 or higher you can open the project directly from this page using this button. Make sure to select the Enable Guided Help before clicking this button.

<script src=""
<button class="gh-button gh-projectopen" onclick="runAwrScript('awrGhOpenProject','Custom_Spirals.emp')">Open Install Example</button>

AWR Version 13


Design Notes

Using Custom Spirals in Analog Office

It is easy to create your own custom spiral inductors within the AWR environment.    The following simple steps show how to create the spiral element, characterise it and then use it in your project.


3) Open up the layout view.   Drag one of the pins so they are no longer on top of each other.


2) Click on the elements tab and look under subcircuits.   Here you will find the subcircuit called Spiral.   Add it to your schematic.


6) Double click on the Extract block and select the Mesh tab.   Turn off "Model as zero thickness".


9) Set the project frequencies then run your simulation.   The simulation will now run plotting the Inductance and Q over frequency.


Option 1 is to simply use the device as is within your project.   It can be used multiple times within that project by selecting it from the subcircuits menu.   It will be extracted each time a simulation is run.

Option 2 is to create an s-parameter file by right clicking on Output Files > Add Port parameter File.   This s-parameter file can then be imported and used as a model for the spiral so no further extractions of the spiral are carried out during simulations.   This s-parameter file can easily be imported into other projects.   Similarly the GDSII can also be exported and then imported into new projects.

Option 3 is to make an s-parameter model then generate an xml component linking symbol, layout, s-parameter model together as an element in the users own custom library.   See the Knowledge base for information on creating custom XML components.