Systematic analysis and modeling of integrated inductors and transformers in RF IC design

Abstract

An efficient modeling technique and a novel CAD tool for the accurate prediction of the performance of integrated inductors and transformers is presented. This generic and process-independent approach generates lumped-element models that easily plug into the RF IC design flow. Their accuracy is established through comparisons with measurements of numerous fabricated inductor structures. This paper intends to provide answers to vital questions in regard to existing limits and future expectations of the performance of on-chip inductors using comprehensive nomographs and quantitative analysis of spiral inductor families. An LNA design paradigm depicts how first-time-working silicon can be achieved when on-chip inductors' coupling is taken into account during the layout design process, minimizing risk, time, and cost.