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Compact and Accurate Models of Large Single-Wall Carbon-Nanotube Interconnects

Compact and Accurate Models of Large Single-Wall Carbon-Nanotube Interconnects,10.1109/TEMC.2011.2159207,IEEE Transactions on Electromagnetic Compatib

Compact and Accurate Models of Large Single-Wall Carbon-Nanotube Interconnects  
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Single-wall carbon nanotubes (SWCNTs) have been proposed for very large scale integration interconnect applications and their modeling is carried out using the multiconductor trans- mission line (MTL) formulation. Their time-domain analysis has some simulation issues related to the high number of SWCNTs within each bundle, which results in a highly complex model and loss of accuracy in the case of long interconnects. In recent years, several techniques have been proposed to reduce the complex- ity of the model whose accuracy decreases as the interconnec- tion length increases. This paper presents a rigorous new tech- nique to generate accurate reduced-order models of large SWCNT interconnects. The frequency response of the MTL is computed by using the spectral form of the dyadic Green's function of the 1-D propagation problem and the model complexity is reduced using rational-model identification techniques. The proposed ap- proach is validated by numerical results involving hundreds of SWCNTs, which confirm its capability of reducing the complex- ity of the model, while preserving accuracy over a wide frequency range.
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