WEBENCH® Tools/LDC1101: design issues

Hello,
Thanks for the question! The WEBENCH Design Tool for inductive sensing coil design produces the layout for the coil itself. You may download the coil design directly by using the "Export to CAD" button on the ride-side of the tool. Note that it comes with several common PCB Layout formats such as: Altium Designer, Cadence Allegro 16.0-16.6, CadSoft EAGLE PCB (v6.4 or newer), DesignSpark PCB, and Mentor Graphics PADS PCB. You can open the source files directly with the appropriate PCB layout tool and copy the coil layout directly to your design. Note that if you want to add an additional layer for ground you will need to edit the PCB stackup in your design to add this additional layer, Webench will not do this automatically.
Hope this helps!
Regards,
Luke

guess i wasn't specific enough, i'm not concerned about the CAD/layout aspect of the tool, i'm more interested in the electrical modeling-- the tool predicts inductance, frequency, Rp values, etc, all without the presence of a ground plane. Can the tool be easily adapted to predict these parameters when a ground plane is present or as a added layer that is solid not a coil?

Hello,
The ground plane that you add will look like a metallic target at the distance you place it from the coil. To approximate the inductance drop, you can use the Inductive Calculator Tool: www.ti.com/.../slyc137
Simply enter the coil parameters into the "Spiral_Inductor_Designer" tab and enter the distance of your ground plane beneath the coils in the "Target Distance" field. This will allow you to see how much of your inductance and resistance has dropped.
Please let me know if this is what you were looking for.
Thanks!
Luke