An equivalent lumped-circuit model for on-chip symmetric intertwined transformer

A physics-based equivalent lumped-circuit model for on-chip symmetric intertwined transformer is presented in this paper. This model accurately predicts the skin effect and proximity effect of the primary and secondary coils inductors over a wide-frequency range using a ladder `4-element' struc...

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Bibliographic Details
Published in2009 IEEE 8th International Conference on ASIC pp. 674 - 677
Main Authors Jin Kang, Lingling Sun, Jincai Wen, Mingfu Zhao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2009
Subjects
Circuit topology
CMOS technology
Coils
equivalent lumped-circuit
Inductors
Low-noise amplifiers
On-chip symmetric intertwined transformer
Proximity effect
Radio frequency
Semiconductor device modeling
Skin effect
Spirals
substrate loss
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Summary:A physics-based equivalent lumped-circuit model for on-chip symmetric intertwined transformer is presented in this paper. This model accurately predicts the skin effect and proximity effect of the primary and secondary coils inductors over a wide-frequency range using a ladder `4-element' structure, respectively. One transformer loop and two RC networks are used to model the substrate loss related to substrate eddy current loss and capacitive and reactive effect of lateral substrate coupling. Two transformers were fabricated on a standard 0.18-um 1P6M RF CMOS technology to further verify the accuracy of the proposed model.
ISBN:9781424438693
1424438691
1424438683
9781424438686
ISSN:2162-7541
2162-755X
DOI:10.1109/ASICON.2009.5351336