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A toroidal inductor integrated in a standard CMOS process

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Author

  • Luca Vandi
  • Pietro Andreani
  • Enrico Temporiti
  • Enrico Sacchi
  • Ivan Bietti
  • Cesare Ghezzi
  • Rinaldo Castello

Summary, in English

This paper presents a toroidal inductor integrated in a standard 0.13 mu m CMOS process. Finite-elements preliminary simulations are provided to prove the validity of the concept. In order to extract fundamental parameters by means of direct calculations, two different and well-known approaches are followed and the results are compared; this comparison provides useful guidelines for the design of the device. A very simple Pi model for low frequencies is derived from 1-port and 2-port measurements, and a good matching with general theory is observed. The coil exhibits an inductance between 0.9 nH and 1.1 nH up to 20 GHz (physical limit for the measurement equipment) and a quality factor approaching 10 at 15 GHz. No self-resonance is observed within the measurement range.

Publishing year

2007

Language

English

Pages

39-46

Publication/Series

Analog Integrated Circuits and Signal Processing

Volume

50

Issue

1

Document type

Journal article

Publisher

Springer

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 0925-1030