Stacked Metal in Sonnet Inductor Models

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The purpose of this document is to assist you with simulation of inductors that have stacked metal, connected by large via array.

Often, these via arrays cover the entire conductor area, making the analysis slow and take much memory. We will investigate the physical behaviour of the via array at high frequency, and derive better modelling techniques that are more efficient in terms of simulation time and memory.

[box type=info]RFIC Stacked Metal in Sonnet (PDF, 892kB)[/box]

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RFIC Inductor Measured vs. Simulated Troubleshooting

[two-thirds] The purpose of this document is to assist you with resolving possible differences between simulated RFIC inductor results and values obtained from the design kit or from measurement.

This document is based on extensive practical experience. The author has worked for many years in RFIC inductor modelling, and worked closely with the modelling and measurement groups of different foundries.

[box type=info]RFIC Inductor Measured vs Simulated (PDF, 540kB)[/box]

Updated 31. Jan 2012:
Added description how to calculate differential L and differential Q
from 2-port and 3-port simulations. Below is the Sonnet equation file.

[box type=info]Differential inductor equations Ldiff and Qdiff (ZIP, 1kB) [/box]

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