A simple analytical model to accurately predict self-resonance frequencies of on-silicon-chip inductors in TEM mode and eddy current mode |
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Authors: | Jyh-Chyurn Guo Teng-Yang Tan |
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Affiliation: | Department of Electronics Engineering, National Chiao-Tung University No. 1001, Ta-Hsueh Road, Hsinchu 300, Taiwan, ROC |
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Abstract: | For the first time, a simple analytical model in the form of explicit formulas was derived for on-silicon-chip inductors. This analytical model can accurately calculate self-resonance frequencies (fSR) in TEM mode and eddy current mode corresponding to very high and very low substrate resistivities (ρSi). Furthermore, this derived model can predict and explain the interesting result that fSR keeps nearly a constant independent of ρSi in TEM and eddy current modes but is critically determined by the inductance and parasitic capacitances. The simple model is useful in on-silicon-chip inductor design for increasing fSR under specified inductance target for broadband RF circuit design and applications. |
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