Abstract—In this letter, single-wal

Abstract—In this letter, single-wall carbon nanotube (CNT)
composite materials are explored for the design of multiband antennas.
An accurate electromagnetic (EM) model of the modified
Sierpinski fractal composite antenna is developed using Microwave
Studio for numerical analysis. For antenna fabrication,
we printed CNT on both sides of a substrate and then cut out the
desired antenna pattern using a high-precision milling machine.
The CNT material was hardened by resin infiltration in order to
be processed on the milling machine. The CNT antenna shows satisfactory
gain and radiation patterns for UHF-RFID (900 MHz),
Bluetooth (2.4 GHz), and WLAN (5.5 GHz) applications. Good
agreement between computed and measured results is observed.
Index Terms—Antenna, carbon nanotube (CNT) composites,
fractal antennas, multiband antennas, radio frequency identification
(RFID), wireless communication systems.