CAD FORMULAS OF THE CAPACITANCE TO GROUND OF SQUARE-SPIRAL INDUCTORS WITH ONE- OR TWO-LAYER SUBSTRATE BY SYNTHETIC ASYMPTOTE

摘要

This paper gives simple CAD formulas of the capacitance to ground of square-spiral inductors on one- or two-layer substrate by synthetic asymptote. From the derived formula, the equivalent capacitor is a fringe capacitor in parallel with an ideal parallel-plate capacitor: The average error is less than 2%.