Open AccessMicrowave Inter-Connections and Switching by Means of Carbon Nano-Tubes
Author(s) -
Giorgio De Angelis,
Andrea Lucibello,
Emanuela Proietti,
R. Marcelli,
Daniele Pochesci,
G. Bartolucci,
Mircea Dragoman,
Daniela Dragoman
Publication year - 2011
Publication title -
nanomaterials and nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.412
H-Index - 21
ISSN - 1847-9804
DOI - 10.5772/50953
Subject(s) - materials science , microwave , carbon nanotube , coplanar waveguide , conductor , biasing , optoelectronics , bandwidth (computing) , electric field , nano , voltage , nanotechnology , electrical engineering , computer science , telecommunications , physics , quantum mechanics , engineering , composite material
In this work, carbon nanotube (CNT) based interconnections and switches will be reviewed, discussing the possibility to use nanotubes as potential building blocks for signal routing in microwave networks. In particular, theoretical design of coplanar waveguide (CPW), micro-strip single-pole-single-throw (SPST) and single-pole-double-throw (SPDT) devices has been performed to predict the electrical performances of CNT-based RF switching configurations. Actually, by using the semiconductor-conductor transition obtained by properly biasing the CNTs, an isolation better than 30 dB can be obtained between the ON and OFF states of the switch for very wide bandwidth applications. This happens owing to the shape deformation and consequent change in the band-gap due to the external pressure caused by the electric field. State-of-art for other switching techniques based on CNTs and their use for RF nano-interconnections is also discussed, together with current issues in measurement techniques
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