Expression of Concern: Accurate Analytical Spiral Inductor Modeling Techniques for Efficient Design Space Exploration

Efficient modeling techniques are required to accelerate design space exploration for integrated spiral inductors. In this letter, closed-form modeling techniques for the inductor's physical inductance and substrate eddy currents are introduced. The model provides several orders of magnitude performance improvement over field-solver-based approaches with typical errors of less than 4% while demonstrating excellent agreement with measured data from fabricated inductors.