NDLI: A Broadband and Scalable On-Chip Inductor Model Appropriate for Operation Modes of Varying Substrate Resistivities

Content Provider	IEEE Xplore Digital Library
Author	Jyh-Chyurn Guo Teng-Yang Tan
Copyright Year	1963
Abstract	A broadband and scalable model is developed to accurately simulate on-chip inductors with various dimensions and substrate resistivities. The broadband accuracy is proven over frequencies of up to 20 GHz, even beyond resonance. A new scheme of resistance-inductance-capacitance networks is deployed for the spiral coils and substrate to account for 3-D eddy current, substrate return path, and spiral coil to substrate coupling effects. The 3-D eddy current is identified as the key element essential to accurately simulate the broadband characteristics. Electromagnetic simulation using the Advanced Design System momentum is conducted to predict the on-chip inductor performance corresponding to a wide range of substrate resistivities(PSi = 0.05-1 KOmega ldr cm) ldr Three operation modes such as transverse electromagnetic mode, slow-wave mode, and eddy current mode are reproduced. The model parameters manifest themselves as physics-based through relevant correlation with PSi over three operation modes. The onset of slow-wave mode can be consistently explained by a key element Rp introduced in our model, which accounts for the conductor loss due to an eddy current arising from magnetic field coupling through a substrate return path. This broadband and scalable model is useful for radio frequency circuit simulation. In addition, it can facilitate an optimum design of on-chip inductors through the physics-based model parameters relevant to varying substrate resistivities.
Sponsorship	IEEE Electron Devices Society
Starting Page	3018
Ending Page	3029
Page Count	12
File Size	671409
File Format	PDF
ISSN	00189383
Volume Number	54
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Substrates Eddy currents Inductors Integrated circuit modeling Coils Broadband communication Couplings substrate resistivity Broadband eddy current inductor scalable
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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