Title :
Improving radiation characteristics of UHF RFID antennas by zigzag structures
Author :
Van Hieu Nguyen ; Hong Phuong Phan ; Manh Ha Hoang ; Dat Son Nguyen ; Mau Chien Dang ; Thuat Nguyen-Tran ; Nhan Ai Tran ; Anh Hoang ; Fribourg-Blanc, E.
Author_Institution :
Fac. of Electr. & Electron. Eng., HCMC Univ. of Technol., Ho Chi Minh City, Vietnam
Abstract :
An antenna structure for UHF RFID tag matched to ST Microelectronics XRAG2 passive tag IC is proposed in this paper. The design is realized on PET (Polyethylene Terephthalate) substrate that has the overall dimension of 82.5 mm × 45.29 mm. The simulation shows that the proposed zigzag-shaped antenna has the return loss at the resonant frequency of -39 dB and omni-directional radiation characteristics with the maximum gain of about 1.97 dBi that is much better than that of the initial meander dipole. The prototype antenna was tested by Rohde & Shwarz ZVB Vector Network Analyzer and showed good fit with the simulation results.
Keywords :
UHF antennas; antenna radiation patterns; antenna testing; network analysers; radiofrequency identification; PET substrate; Rohde & Shwarz ZVB vector network analyzer; ST Microelectronics XRAG2 passive tag IC; UHF RFID antennas; UHF RFID tag; antenna structure; initial meander dipole; omnidirectional radiation characteristics; polyethylene terephthalate substrate; prototype antenna; resonant frequency; return loss; zigzag structures; zigzag-shaped antenna; Antenna measurements; Dipole antennas; Lead; Radio frequency; Thickness measurement; UHF antennas; RFID; RFID tag; antenna design; antenna efficiency; antenna radiation; meander line antenna;
Conference_Titel :
Advanced Technologies for Communications (ATC), 2011 International Conference on
Conference_Location :
Da Nang
Print_ISBN :
978-1-4577-1206-7
DOI :
10.1109/ATC.2011.6027445
