Title :
A Novel Ceramic Fractal Antenna for Modern RFID System
Author :
Lin, Bin ; Zhou, Jianhua ; You, Baiqiang ; Xu, Weiming
Author_Institution :
Dept. of Electron. Eng., Xiamen Univ., Xiamen
Abstract :
A novel double band ceramic fractal antenna working at 2.4 GHz and 5.8 GHz is designed for the minimization requirement of RFID tag antenna. The simulated results show that when VSWR (vertical standing wave ratio) is less than 2, the antenna absolute bandwidths are up to 0.39 GHz and 1.85 GHz in 2.4 GHz and 5.8 GHz respectively , with relative bandwidths up to 15.20% and 35.82% respectively,. Considering engineering processes, the influence of dielectric constant epsivr, and substrate thickness are studied in detail. At last we proposed an optimized antenna with dual fractal structure, which can cover all primary frequency bands of RFID system, from 2.17 GHz to 7.05 GHz.
Keywords :
UHF antennas; ceramics; fractal antennas; microwave antennas; multifrequency antennas; permittivity; radiofrequency identification; substrates; RFID tag antenna; VSWR; ceramic fractal antenna; dielectric constant; dual band antenna; frequency 2.4 GHz; frequency 5.8 GHz; minimization requirement; substrate thickness; vertical standing wave ratio; Bandwidth; Ceramics; Dielectric constant; Dielectric substrates; Fractal antennas; Frequency; Microstrip antennas; RFID tags; Radiofrequency identification; Ultra wideband antennas;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.530
