A Compact Broadband Circularly Polarized Slot Antenna for Universal UHF RFID Reader and GPS
Keywords:
Axial Ratio (AR), Coplanar Waveguide (CPW), Circularly Polarized (CP), Global Positioning System (GPS), RFID reader, Ultrahigh Frequency (UHF)Abstract
A novel compact printed broadband circularly polarized slot antenna is proposed in this paper. The antenna consists of an inverted L-shaped coplanar waveguide feed structure and a square ground plate loaded with three rectangular slots. The antenna achieves good impedance matching and circular polarization characteristics by adjusting the size of the L-shaped band and the rectangular slot. The simulation results show that the antenna has a 10-dB impedance bandwidth of 1360 MHz (690-2050 MHz) and a 3 dB axial ratio (AR) bandwidth of 490 MHz (770-1260 MHz). Additionally, the maximum gain reached 4.02 dBi. The antenna proposed in this paper can be applied to UHF RFID and GPS frequency bands.
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Z. Wang, R. She, J. Han, S. Fang, and Y. Liu, “Dual-band dual-sense circularly polarized stacked patch antenna with a small frequency ratio for UHF RFID reader applications,” IEEE Access, vol. 5, pp. 15260-15270, July 2017.
M. H. Zolghadri and S. Jam, “A wideband circular polarization antenna for UHF tags,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 33, no. 3, pp. 319-324, Mar. 2018.
T. Björninen, J. Virkki, and L. Ukkonen, “Small square-shaped slot antenna for wearable passive UHF RFID tags,” 2017 International Applied Computational Electromagnetics Society Symposium (ACES), pp. 1-2. Aug. 2017.
W. Luo, R. B. He, and P. Wang, “Overview of the design strategies for the circularly polarized UHF RFID tag antenna,” 2019 Photonics Electromagn. Res. Symp. - Fall, PIERS - Fall 2019 – Proc., pp. 2683-2685, Dec. 2019.
Z. Du, Z. Wu, M. Wang, J. Rao, and P. Luo, “Compact quasi-yagi antenna for handheld UHF RFID reader,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 30, no. 8, pp. 860-865, Aug. 2015.
J. D. Teran Guerra, E. A. Morales Gonzalez, F. Lopez Huerta, I. Arceo Rosas, R. Lopez Leal, and J. Martinez Castillo, “Patch antenna design for UHF RFID systems,” 2019 IEEE Int. Conf. Eng. Veracruz (ICEV), pp. 1-5,Oct. 2019.
C. Yang, Y. Yao, J. Yu, and X. Chen, “Novel compact circularly polarized antenna with high frontto-back ratio for UHF RFID reader applications,” Asia-Pacific Microw. Conf., pp. 1358-1361, Dec. 2011.
Nasimuddin, Z. N. Chen, and X. Qing, “Asymmetric-circular shaped slotted microstrip antennas for circular polarization and RFID applications,” IEEE Trans. Antennas Propag., vol. 58, pp. 3821-3828, Dec. 2010.
E. Ghanem, E. A. Abdallah, and M. A. AboulDahab, “A circularly polarized printed antenna with modified slots and slits for RFID reader,” 2019 Photonics Electromagn. Res. Symp. - Fall, PIERS - Fall 2019 – Proc., pp. 1260-1264, Dec. 2019.
Y. Zhang, B. Wang, and J. Huang, “Circularly polarized truncated microstrip antenna for UHF RFID reader,” Proc. 2019 IEEE 2nd Int. Conf. Autom. Electron. Electr. Eng (AUTEEE), pp. 468- 471, Nov. 2019.
Z. Wang, S. Fang, S. Fu, and S. Jia, “Single-fed broadband circularly polarized stacked patch antenna with horizontally meandered strip for universal UHF RFID applications,” IEEE Trans. Microw. Theory Tech., vol. 59, no. 4, pp. 1066- 1073, Apr. 2011.
Z. N. Chen, X. Qing, and H. L. Chung, “A universal UHF RFID reader antenna,” IEEE Trans. Microw. Theory Tech., vol. 57, no. 5, pp. 1275-1282, May 2009.
C. Y. D. Sim and C. J. Chi, “A slot loaded circularly polarized patch antenna for UHF RFID reader,” IEEE Trans. Antennas Propag., vol. 60, no. 10, pp. 4516-4521, Oct. 2012.
J. Lu and S. Wang. “Planar broadband circularly polarized antenna with square slot for UHF RFID reader,” IEEE Trans. Antennas Propag., vol. 61, no. 10, pp. 45-53, Sept. 2013.
C. Sim, Y. Hsu, and G. Yang, “Slits loaded circularly polarized universal UHF RFID reader antenna,” IEEE Antennas Wireless Propag. Lett., vol. 14, pp. 827-830, Apr. 2015.
C. Sun, H. Zheng, and Y. Liu, “Analysis and design of a low-cost dual-band compact circularly polarized antenna for GPS application,” IEEE Trans. Antennas Propag., vol. 64, no. 1, pp. 365- 370, Jan. 2016.
N. M. Sahar, M. T. Islam, and N. Misran, “A reconfigurable multiband antenna for RFID and GPS applications,” Elektron. ir Elektrotechnika, vol. 21, no. 6, pp. 44-51, Oct. 2015.
K. Oh, W. Son, S. Cha, M. Lee, and J. Yu, “Compact dual-band printed quadrifilar antennas for UHF RFID/GPS operations,” IEEE Antennas Wireless Propag. Lett., vol. 10, pp. 804-807, Aug. 2011.
R. Patel, A. Desai, and T. Upadhyaya, “An electrically small antenna using defected ground structure for RFID, GPS and IEEE 802.11 a/b /g /s applications,” Prog. Electromagn. Res. Lett., vol. 75, pp. 75-81, Apr. 2018.
J. Li, H. Liu, S. Zhang, M. Luo, Y. Zhang, and S. He, “A wideband single-fed circularly-polarized patch antenna with enhanced axial ratio bandwidth for UHF RFID reader applications,” IEEE Access, vol. 6, pp. 529-551, Oct. 2018.
J. L. Li, H. Liu, S. Zhang, Y. Zhang, and S. He. “Compact broadband circularly-polarised antenna with a backed cavity for UHF RFID applications,” IET Microw. Antennas Propag., vol. 13, no. 6, pp. 789-795, May 2019.
Y.-Y. Lu and E. F. Lin, “Design of coplanar dipole antenna with inverted-H slot for 0.9/1.575/2.0/2.4/ 2.45/5.0 GHz applications,” J. Electr. Electron. Eng., vol. 5, no. 2, pp. 38-47, Apr. 2017.