Title :
Dual-band RFID-reader antenna using annular plate with curved and rectangular slots
Author :
Phongcharoenpanich, C. ; Suwalak, R.
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
A dual-band antenna for the reader of the Radio Frequency Identification (RFID) applications is proposed. The antenna design to achieve the dual-frequency band is carried out by using the annular plate with curved and rectangular slots. The simulation is done by using CST based on the Finite Integral Method. Furthermore, the parameters of antenna are optimized with the Quasi Newton method. The effects of antenna parameters are analyzed. Along the UHF-RFID band, the pattern is unidirectional beam. The half-power beamwidths in xz- and yz- planes are 78 and 64 degrees, respectively. The bandwidth covers 911-925.6 MHz. The directivity is 8.33 dBi. For 2.45 GHz band, the pattern is also unidirectional beam. The half-power beamwidths in xz- and yz-planes are 58 and 21 degrees, respectively. The bandwidth covers 2.32-2.52 GHz. The gain is 9-10.5 dBi.
Keywords :
UHF antennas; loop antennas; multifrequency antennas; radiofrequency identification; annular plate; curved slot; dual band RFID reader antenna; finite integral method; frequency 2.32 GHz to 2.52 GHz; frequency 911 MHz to 925.6 MHz; half power beamwidth; quasi Newton method; radio frequency identification; rectangular slot; unidirectional beam pattern; Antenna radiation patterns; Dual band; Microstrip antennas; Microwave antennas; Microwave bands; Radiofrequency identification;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7366-3
DOI :
10.1109/ICEAA.2010.5651264
