A Novel High-Gain Dual-Band Antenna for RFID Reader Applications

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.

[1]  Pezholil Mohanan,et al.  Compact planar multiband antenna for GPS, DCS, 2.4/5.8 GHz WLAN applications , 2005 .

[2]  M. Wong,et al.  Analysis of a Dual-Band Dual Slot Omnidirectional Stripline Antenna , 2007, IEEE Antennas and Wireless Propagation Letters.

[3]  M. Ribo,et al.  Multiband Handset Antenna Combining a PIFA, Slots, and Ground Plane Modes , 2009, IEEE Transactions on Antennas and Propagation.

[4]  A. Giacomini,et al.  Wide band dual polarized probes for near and farfield measurement systems , 2008, 2008 IEEE Antennas and Propagation Society International Symposium.

[5]  Hua‐Ming Chen,et al.  A Compact Dual-Band Dielectric Resonator Antenna Using a Parasitic Slot , 2009, IEEE Antennas and Wireless Propagation Letters.

[6]  M. Kivikoski,et al.  A novel dual-frequency circularly polarized rectenna , 2003, IEEE Antennas and Wireless Propagation Letters.

[7]  Ling Chen,et al.  Investigation and Design of a Modified Aperture-Couple Fractal Antenna for RFID Applications , 2008, 2008 ISECS International Colloquium on Computing, Communication, Control, and Management.

[8]  Kin-Lu Wong,et al.  Printed monopole array antenna for WLAN operation in the 2.4/5.2/5.8 GHz bands , 2003 .

[9]  Kwok Wa Leung,et al.  Dual-Band Circularly Polarized Dual-Slot Antenna With a Dielectric Cover , 2009, IEEE Transactions on Antennas and Propagation.

[10]  W. X. Zhang,et al.  Broadband CPW-fed RFID antenna at 5.8 GHz , 2006 .

[11]  G. Yang,et al.  A multi-functional stacked patch antenna for wireless power beaming and data telemetry , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[12]  Sheng Hong,et al.  Design of a Novel High-Gain Dual-Band Antenna for WLAN Applications , 2009, IEEE Antennas and Wireless Propagation Letters.

[13]  Kin-Lu Wong,et al.  Printed folded dipole array antenna with directional radiation for 2.4/5 GHz WLAN operation , 2003 .

[14]  Jieqiu Zhang,et al.  Dual-band bidirectional high gain antenna for WLAN 2.4/5.8 GHz applications , 2009 .

[15]  Choon Sik Cho,et al.  A dual band printed dipole antenna with spiral structure for WLAN application , 2005 .

[16]  Seong-Ook Park,et al.  Small chip antenna for 2.4/5.8-GHz dual ISM-band applications , 2003 .

[17]  Kai Chang,et al.  A high-efficiency dual-frequency rectenna for 2.45- and 5.8-GHz wireless power transmission , 2002 .