A new wideband compact model for spiral inductors in RFICs

Author

Melendy, Daniel ; Francis, Pascale ; Pichler, Christoph ; Hwang, Kyuwoon ; Srinivasan, Gopal ; Weisshaar, Andreas

Author_Institution

Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA

Volume

23

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

273

Lastpage

275

Abstract

A new wide-band compact model for planar spiral inductors on lossy silicon substrate is presented. Transformer loops are used in the series branch of the equivalent circuit model to include the effects of the frequency-dependent losses, in particular eddy-current loss in the silicon substrate. The new compact model and the standard 9-element model are extracted from measurement data of a typical 1.5-nH spiral fabricated on a low-resistivity CMOS substrate over a frequency range of 0.1 to 10 GHz. The frequency-dependent series resistance and inductance as well as the quality factor obtained with the new model are in excellent agreement with the measured results.

Keywords

CMOS integrated circuits; Q-factor; UHF integrated circuits; eddy currents; equivalent circuits; field effect MMIC; inductors; integrated circuit measurement; losses; 0.1 to 10 GHz; CMOS substrate; RFICs; eddy-current loss; equivalent circuit model; frequency-dependent losses; measurement data; planar spiral inductors; quality factor; series branch; transformer loops; wideband compact model; Electrical resistance measurement; Equivalent circuits; Frequency measurement; Inductors; Measurement standards; Radiofrequency integrated circuits; Semiconductor device modeling; Silicon; Spirals; Wideband;

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/55.998874

Filename

998874