Optimization of RF On-Chip Inductors Using Genetic Algorithms

This chapter discusses the optimization of the geometry of RF on-chip inductors by means of a genetic algorithm in order to achieve adequate performance. Necessary background theory together with the modeling of these inductors is included in order to aid the discussion. A set of guidelines for the design of such inductors with a good quality factor in a standard CMOS process is also provided. The optimization process is initialized by using a set of empirical formulae in order to estimate the physical parameters of the required structure as constrained by the technology. Then, automated design optimization is executed to further improve its performance by means of dedicated software packages. The authors explain how to use state-of-the-art computer-aided design tools in the optimization process and how to efficiently simulate the inductor performance using electromagnetic simulators.

[1]  Stephen P. Boyd,et al.  Simple accurate expressions for planar spiral inductances , 1999, IEEE J. Solid State Circuits.

[2]  Sachin S. Sapatnekar,et al.  Optimization of integrated spiral inductors using sequential quadratic programming , 2004, Proceedings Design, Automation and Test in Europe Conference and Exhibition.

[3]  Sadayuki Yoshitomi.  Analysis and simulation of spiral inductor fabricated on silicon substrate , 2004, Proceedings of the 2004 11th IEEE International Conference on Electronics, Circuits and Systems, 2004. ICECS 2004..

[4]  Sanjay Raman,et al.  Quality factor and inductance in differential IC implementations , 2002 .

[5]  Wenhuan Yu.  Optimization of Spiral Inductors and LC Resonators Exploiting Space Mapping Technology , 2006 .

[6]  Thomas H. Lee,et al.  The Design of CMOS Radio-Frequency Integrated Circuits: RF CIRCUITS THROUGH THE AGES , 2003 .

[7]  Kenichi Okada,et al.  Modeling of Spiral Inductors , 2010 .

[8]  Michiel Steyaert,et al.  A 1.8-GHz low-phase-noise CMOS VCO using optimized hollow spiral inductors , 1997, IEEE J. Solid State Circuits.

[9]  S. Wong,et al.  Physical modeling of spiral inductors on silicon , 2000 .

[10]  Roy Paily Palathinkal,et al.  Design and Analysis of Spiral Inductors , 2013 .

[11]  Marc D. Rosales,et al.  Inductor Modeling Using 3D EM Design Tool for RF CMOS Process , 2008 .

[12]  J.W. Bandler,et al.  Optimization of Spiral Inductor on Silicon using Space Mapping , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[13]  M. Helena Fino,et al.  GADISI - Genetic Algorithms Applied to the Automatic Design of Integrated Spiral Inductors , 2010, DoCEIS.

[14]  Stephen P. Boyd,et al.  Optimization of inductor circuits via geometric programming , 1999, DAC '99.

[15]  T.H. Lee,et al.  A physical model for planar spiral inductors on silicon , 1996, International Electron Devices Meeting. Technical Digest.

[16]  H. Greenhouse,et al.  Design of Planar Rectangular Microelectronic Inductors , 1974 .

[17]  Peter R. Kinget,et al.  An analytical model of planar inductors on lowly doped silicon substrates for analog design up to 3G , 1996 .