Advanced carbon-fiber composite (CFC) materials are
being used in the aerospace industry as a replacement for
metals [5], [6] because of their higher strength, lower cost, and
lighter weight. There are various kinds of CFCs: reinforced
continuous carbon fibers (RCCFs) [5], short carbon fibers
(SCFs), carbon black (CB), and carbon nanotube (CNT) [6]. In
[7] and [8], we investigated the use of carbon fiber materials for
the radiating element of a radio frequency identification (RFID)
antenna. It was observed that CFC can be efficiently used in