An Efficient Numerical Model for Planar Spiral Inductor On-Chip
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In this paper, a very useful numerical technique has been developed for analyzing the transient characteristics of a planar-spiral inductor on-chip. A locally conformal technique and an alternating-direction implicit scheme are applied to the finite-difference time-domain method. A formulation for solving three dimensional Maxwell’s equations is proposed. Using the proposed method, various parameters of the planar-spiral inductors have been analyzed and an equivalent circuit, which includes frequency-independent circuit elements, has been introduced. Highly computational efficiency is implemented. Numerical results show excellent agreement with the measured data over a wide frequency range.
Keywords:Conformal alternating-direction implicit finite-difference time-domain frequency-independent equivalent circuit planar-spiral inductors silicon-based transient characteristics
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