Title :
Wide-band compact modeling of spiral inductors in RFICs
Author :
Melendy, D. ; Francis, P. ; Pichler, C. ; Kyuwoon Hwang ; Srinivasan, G. ; Weisshaar, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
A new wide-band compact modeling methodology for planar spiral inductors on lossy silicon substrate is presented. The new ideal lumped-element equivalent circuit model employs transformer loops in the series branch to include the effects of the frequency-dependent losses, in particular eddy-current loss in the bulk silicon substrate. A robust automated extraction procedure is employed to extract the element values of the new compact model. The new automated modeling methodology has been applied to a typical 1.5 nH spiral fabricated on a low-resistivity CMOS substrate. The frequency-dependent series resistance and inductance as well as the quality factor obtained with the new wideband model are in excellent agreement with the measured results over a 10 GHz bandwidth.
Keywords :
CMOS integrated circuits; Q-factor; eddy current losses; equivalent circuits; inductors; integrated circuit modelling; 10 GHz; RFIC; Si; automated parameter extraction; eddy current loss; frequency dependence; inductance; lossy silicon substrate; low-resistivity CMOS substrate; lumped-element equivalent circuit model; planar spiral inductor; quality factor; series resistance; transformer loop; wideband compact model; Equivalent circuits; Frequency; Inductors; Q factor; Radiofrequency integrated circuits; Robustness; Semiconductor device modeling; Silicon; Spirals; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011727
