spiral inductor on gaas

i want to make spiral inductor on gaAs but im very confused wid all dis dimensions, can any body help me out. or dowe any body has any example of spiral inductore on GaAs.

Integrated inductor design overview: Spiral Inductor Design - Queen's Learning Wiki

Inductance calculation: http://citeseerx.ist.psu.edu/viewdoc...=rep1&type=pdf