volume | PIER Journals

2015-07-11

Design of Miniaturized Quasi-Yagi Antenna for Portable RFID Reader Applications

Junho Yeo,

Prof. Junho Yeo

School of Computer & Communication Engineering

Daegu University

Korea

Homepage

Jong-Ig Lee

Dr. Jong-Ig Lee

Department of Electronics Engineering

Dongseo University

Korea

Homepage

Progress In Electromagnetics Research C, Vol. 58, 97-104, 2015

doi:10.2528/PIERC15041701 | Google Scholar

Abstract

A method to design a miniaturized two-element quasi-Yagi antenna (QYA) with size and gain requirements is presented for portable ultra high frequency (UHF) radio frequency identification (RFID) reader applications. The antenna consists of a driver dipole and a ground reflector, and these elements are serially connected with a coplanar strip line. The ends of both elements are folded back toward each other to reduce the lateral size of the antenna. A detailed design procedure of the proposed antenna is explained, along with a performance comparison for the input impedance, voltage standing wave ratio (VSWR), broadside gain, front-to-back (F/B) ratio, and total efficiency. A prototype antenna, covering the 860―960 MHz UHF RFID band with a gain > 4 dBi, is fabricated on an FR4 substrate with dimensions limited to 90 mm by 90 mm. The total width of the proposed antenna is reduced by approximately 41% compared to the conventional QYA without miniaturization, and an F/B ratio is improved by 1―8 dB in the band. Experiment results show that the proposed antenna has the desired impedance characteristics with a frequency band of 853―1,098 MHz for a VSWR < 2, and a stable broadside gain of 4.0―5.3 dBi in the UHF RFID band. Moreover, a measured F/B ratio > 13 dB is obtained.

Download Full Article (808) View Full Article volume

Citation

Copy Export

Junho Yeo, and Jong-Ig Lee, "Design of Miniaturized Quasi-Yagi Antenna for Portable RFID Reader Applications," Progress In Electromagnetics Research C, Vol. 58, 97-104, 2015.
doi:10.2528/PIERC15041701

References

1. Waterhouse, R., Printed Antennas for Wireless Communications, John Wiley & Sons Ltd., 2007.
doi:10.1002/9780470512241

2. Qian, Y., W. R. Deal, N. Kaneda, and T. Itoh, "Microstrip-fed quasi-Yagi antenna with broadband characteristics," Electron. Lett., Vol. 34, No. 23, 2194-2196, Nov. Nov. 1998.
doi:10.1049/el:19981583 Google Scholar

3. Lee, J.-I. and J. Yeo, "Broadband compact quasi-Yagi antenna for indoor digital TV," Microwave Opt. Technol. Lett., Vol. 55, No. 12, 2859-2863, Dec. Dec. 2013. Google Scholar

4. Lee, J.-I. and J. Yeo, "Modified broadband quasi-Yagi antenna with enhanced gain and bandwidth," Microwave Opt. Technol. Lett., Vol. 55, No. 2, 406-409, Feb. 2013.
doi:10.1002/mop.27325 Google Scholar

5. Finkenzeller, K., RFID Handbook, 2nd Ed., Wiley, 2003.
doi:10.1002/0470868023

6. Ukkonen, L., L. Sydanheimo, and M. Kivikoski, "Read range performance comparison of compact reader antennas for a handheld UHF RFID reader [supplement, applications & practice]," IEEE Commun. Mag., Vol. 45, No. 4, 24-31, Apr. 2007. Google Scholar

7. Hua, R. C. and T. G. Ma, "A printed dipole antenna for ultra high frequency (UHF) radio frequency identification (RFID) handheld reader," IEEE Trans. Antennas Propag., Vol. 55, No. 12, 3742-3745, Dec. 2007.
doi:10.1109/TAP.2007.910521 Google Scholar

8. Nikitin, P. V. and K. V. S. Rao, "Compact Yagi antenna for handheld UHF RFID reader," Proc. IEEE Antennas Propag. Soc. Int. Symp., 1-4, Jul. 2010. Google Scholar

9. Hsu, H. T. and T. J. Huang, "A Koch-shaped log-periodic dipole array (LPDA) antenna for universal ultra-high-frequency (UHF) radio frequency identification (RFID) handheld reader," IEEE Trans. Antennas Propag., Vol. 61, No. 9, 4852-4856, Sep. 2013.
doi:10.1109/TAP.2013.2264451 Google Scholar

10. Hsu, H. T. and T. J. Huang, "A 1 by 2 dual-band antenna array for radio-frequency identification (RFID) handheld reader applications," IEEE Trans. Antennas Propag., Vol. 62, No. 10, 5260-5267, Oct. 2014.
doi:10.1109/TAP.2014.2340897 Google Scholar