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

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

653

Lastpage

656

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);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2055818

Filename

5499148