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Full-wave Evaluation of Carbon Nanotubes as Microwave Interconnects



Kichul Kim, Paul Rice, Pavel Kabos, Dejan Filipovic


Microwave interconnect configurations composed of single wall carbon nanotubes (CNTs) are studied in this paper. Specifically, an atomic layer deposition (ALD) enabled nano-coaxial line with individual CNTs comprising the inner conductor, CNT Goubau line with ALD enabled alumina coating, a nano-coaxial line with inner conductor composed of CNT bundles, and Goubau lines of CNT bundles are discussed. The characteristic impedance and losses of these interconnects are compared with the similar size copper-based transmission lines. Full wave simulations with incorporated quantum effects are conducted using finite element and method of moments tools ANSYS HFSS and EMSS FEKO1, respectively. The thorough modeling validation, interconnect design and analysis are carried out over the wide microwave spectrum. Obtained results clearly show that the CNT interconnects can indeed outperform their copper counterparts with lower loss and impedance, that is reinforced with decreasing the radius of the CNTs. However, from lower loss and larger slow wave factor, the CNT bundle may produce stronger coupling with its neighboring lines
Proceedings Title
IEEE EMC Society Symposium on Electromagnetic Compatibility
Conference Dates
July 25-30, 2010
Conference Location
Ft. Lauderdale, FL


Kim, K. , Rice, P. , Kabos, P. and Filipovic, D. (2010), Full-wave Evaluation of Carbon Nanotubes as Microwave Interconnects, IEEE EMC Society Symposium on Electromagnetic Compatibility, Ft. Lauderdale, FL, [online], (Accessed April 25, 2024)
Created July 25, 2010, Updated November 10, 2018