Title :
A Novel High-Gain Dual-Band Antenna for RFID Reader Applications
Author :
Mobashsher, Ahmed Toaha ; Islam, Mohammad Tariqul ; Misran, Norbahiah
Author_Institution :
Dept. of Electr., Electron., & Syst. Eng., Univ. Kebangsaan Malaysia, Bangi, Malaysia
fDate :
7/2/1905 12:00:00 AM
Abstract :
A novel high-gain dual-band antenna for radio frequency identification (RFID) reader applications covering free ISM bands of 2.45 and 5.8 GHz is presented in this letter. The antenna is composed of a U-shaped copper strip with unequal arm, a printed rectangular ring, and the ground plane. A good impedance bandwidth of 120 MHz has been achieved from 2.37 to 2.49 GHz for the lower band, while the upper band covers 420 MHz (from 5.55 to 5.97 GHz). The U-shaped feeding strip excites the rectangular ring effectively by providing a good impedance matching with over 85% of total antenna efficiency in both the frequency bands and also 9.56 and 10.17 dBi gain in the lower and higher frequency band, respectively.
Keywords :
impedance matching; multifrequency antennas; radiofrequency identification; ISM bands; RFID reader application; U-shaped copper strip; bandwidth 120 MHz; bandwidth 420 MHz; frequency 2.37 GHz to 2.49 GHz; frequency 2.45 GHz; frequency 5.55 GHz to 5.97 GHz; frequency 5.8 GHz; ground plane; high-gain dual-band antenna; impedance matching; printed rectangular ring; radio frequency identification; Antenna; dual-band antenna; high gain; radio frequency identification (RFID);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2055818
