A broadband and scalable lumped element model for fully symmetric inductors under single-ended and differentially driven operations

Jyh-Chyurn Guo*, Teng Yang Tan

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    研究成果: Article同行評審

    1 引文 斯高帕斯(Scopus)

    摘要

    A broadband and scalable 2-T model is developed to accurately simulate fully symmetric inductors with various dimensions. The 2-T model is defined to reflect the structure of an equivalent circuit with two identical T-model circuits. Two-step de-embedding is assisted by open and through pads for extraction of intrinsic characteristics. The accuracy is validated by 3-D full-wave electromagnetic simulation. A novel parameter extraction flow is established, and a single set of model parameters is derived to be valid for both single-ended and differentially driven topologies. The broadband accuracy is proven by a good match with S-parameters, L(ω), Re(Zin(ω)), and Q(ω) over frequencies up to 20 GHz. The scalability is justified by good fitting with either a linear or a parabolic function of spiral coil radii. Furthermore, all model parameters are frequency independent so as to ensure computation efficiency. This 2-T model consistently predicts the enhancement of Qmax by 20%-30% for the symmetric inductors under a differential excitation. The Q improvement is even better than 100% over broader frequencies beyond fm (Qmax).

    原文English
    頁(從 - 到)1878-1888
    頁數11
    期刊IEEE Transactions on Electron Devices
    54
    發行號8
    DOIs
    出版狀態Published - 1 8月 2007

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