engleski

Modelling of On-Chip Spiral Inductors

This paper presents modelling of on-chip spiral inductors. At lower frequencies the inductors are relatively well modelled by two-element and three-element equivalent circuits. As the operating frequency of modern integrated circuits reached GHz frequency range, accurate on-chip inductor models are necessary in the RF design process. Data for inductor modelling is obtained by measuring S-parameters of on-chip inductors. Several models have been evaluated. The accuracy is evaluated by comparing simulation results with measurements. Firstly, simple π - network is used capable of modelling the inductor up to approximately 1 GHz. This model is not able to predict skineffect and substrate losses at higher frequencies. The second model includes the skin- effect by using resistance-capacitor-inductance network. The inductor model parameters are additionally optimised by a MATLAB optimisation tool.

On-chip spiral inductors

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