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Spiral Inductor Design for Quality Factor  

Lee, Sang-Gug (Hamb Elec & Tele)
Kim, Sin-Cheol (Information and Communications University)
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Abstract
A closed form expression for the quality factor of the spiral inductor, methodologically, is presented as a function of the inductance ($L_{ind}$), metal-line width (W), spacing (S), inner and the diameter ($D_i$). For a given inductance, the dependences of quality factor on W, S, and $D_i$ are analyzed, and suggested the design optimization guidelines.
Keywords
spiral inductors; silicon; RF Ics; quality factor;
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