2 research outputs found
Microwave Inter-Connections and Switching by means of Carbon Nano-tubes
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), microâstrip singleâpoleâsingleâthrow
(SPST) and singleâpoleâdoubleâthrow (SPDT) devices has
been performed to predict the electrical performances of
CNTâbased RF switching configurations. Actually, by
using the semiconductorâconductor 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 bandâgap due to the external pressure
caused by the electric field. Stateâofâart for other
switching techniques based on CNTs and their use for RF
nanoâinterconnections is also discussed, together with
current issues in measurement techniques