Folded monopole antenna for passive RFID tags

Document Type : Research Paper


Department of ECE, PSG College of Technology, Coimbatore, Tamilnadu, India


A dual band monopole antenna for passive RFID tags is presented, simulated with suitable bandwidth and gain for RFID application. The monopole is optimized using HFSS to obtain dual band characteristics. This paper presents a dual-band monopole antenna suitable for passive RFID applications which operates at 2.45 GHz and 5.8 GHz. This antenna is designed with low cost and low profile substrate to achieve a reasonable gain. This antenna has a total area of 38×28mm2 and is mounted on an FR4 substrate with a thickness of 1.6mm, dielectric permittivity constant 4.4, and loss tangent of 0.025.


[1] M.S. Bell, RFID Technology and Applications, Cambridge University Press: London, UK, 2011.[2] L. Chang, H. Wang, Z. Zhang, Y. Li and Z. Feng, Compact single feed dual-mode antenna for active RFID tag
application, IEEE Trans. Antennas Propag. 63 (2015) 5190–5194.
[3] V. Chawla and D.S. Ha, An overview of passive RFID, IEEE Commun. Mag. 45 (2007) 11–17.
[4] K. Finkenzeller, RFID Handbook: Radio-Frequency Identification Fundamentals and Applications, 2nd ed.; Wiley,
New York, NY, USA, 2004.
[5] W.C. Liu and C.C. Huang, A CPW-fed L-shaped slot planar monopole antenna for triple-band operations, Microwave Opt. Technol. Lett. 44(6) (2005) 510–512.
[6] Q. Liu, J. Shen, J. Yin, H. Liu and Y. Liu, Compact 0.92/2.45-GH dual-band directional circularly polarized
microstrip antenna for handheld RFID reader applications, IEEE Trans. Antennas Propag. 63 (2015) 3849–3856.
[7] K. Siakavara, S. Goudos, A. Theopoulos and J. Sahalos, Passive UHF RFID tags with specific printed antennas
for dielectric and metallic objects applications, Radioengin. 26 (2017) 735–745.
[8] B. Wang and W. Wang, A miniature tri-band RFID reader with high gain for portable devices, Int. J. Microw.
Wirel.Technol. 9 (2017) 1163–1167.
[9] Y. Zeng, Z.N. Chen, X. Qing and J.M. Jin, A directional, closely spaced zero-phase-shift-line loop array for UHF
near-field RFID reader antennas, IEEE Trans. Antennas Propag. 66 (2018) 5639–5642.
Volume 12, Special Issue
December 2021
Pages 1713-1717
  • Receive Date: 02 August 2021
  • Accept Date: 20 November 2021