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Reducing Crosstalk Induced Delay and Peak Noise in Carbon Nanotube Interconnects

[ Vol. 14 , Issue. 1 ]

Author(s):

Piratla Uma Sathyakam and Partha S. Mallick*   Pages 76 - 80 ( 5 )

Abstract:


Background: Crosstalk will be a major concern in future nano ICs where the components will be scaled down to a few nanometers. In particular, modeling of CNT based interconnects shows that they will suffer from crosstalk when fabricated at smaller technology nodes.

Objective: This paper presents reduction of crosstalk and noise in CNT bundle interconnects. We propose the use of small diameter semiconducting CNTs (s-CNTs) as electromagnetic interference (EMI) shields for CNT bundle interconnects.

Methods: The coupling capacitance of the proposed CNT bundle structure shows that crosstalk can be reduced significantly by using small diameter s-CNTs. We perform SPICE analysis to show the reduction in crosstalk and peak noise.

Results: The proposed bundle geometry reduces 46% crosstalk induced delay and 23% output peak noise as compared to conventional CNT interconnects.

Conclusions: Small diameter semiconducting CNTs can be used as EMI shields to reduce crosstalk and noise in CNT interconnects.

Keywords:

Carbon nanotubes, interconnects, crosstalk, delay, peak noise, integrated circuits.

Affiliation:

School of Electrical Engineering, VIT University, Vellore, Tamil Nadu 632014, School of Electrical Engineering, VIT University, Vellore, Tamil Nadu 632014

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