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This paper presents a circularly polarized Printed Dipole Antenna (PDA) to be used in a Radio Frequency Identification (RFID) device and Ground Penetrating Radar (GPR) system. Two symmetric arms of a PDA are printed on the opposite surfaces of a dielectric, and the width is kept below 0.5λ0. However, in our work, the width is widened for broad-banding and better impedance matching. The feed network consists of a printed version of a two-wire transmission line and a microstrip line on a truncated ground plane. It is responsible for getting circular polarization. The designed PDA provides an operating bandwidth from 0.86GHz to 1.02GHz for S11 ≤ -10 dB with the Axial Ratio (AR) below 3.50 dB. The band (0.86–0.96 GHz) is used in UHF RFID communication for fast scanning, logistics management, and animal identification. A GPR also offers a good balance between resolution and penetration depth at around 1 GHz. Therefore, the designed PDA may find its applications in both RFID and GPR systems.

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Circularly Polarized Printed Dipole Antenna for Radio Frequency Identification and Ground Penetrating Radar

  • 会议论文

  • 发表日期：

    2026年

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  • Tarit Sarkar,
  • Subhrashil Nanda,
  • R. P. Ghosh,
  • R. R. Pal

摘要

This paper presents a circularly polarized Printed Dipole Antenna (PDA) to be used in a Radio Frequency Identification (RFID) device and Ground Penetrating Radar (GPR) system. Two symmetric arms of a PDA are printed on the opposite surfaces of a dielectric, and the width is kept below 0.5λ0. However, in our work, the width is widened for broad-banding and better impedance matching. The feed network consists of a printed version of a two-wire transmission line and a microstrip line on a truncated ground plane. It is responsible for getting circular polarization. The designed PDA provides an operating bandwidth from 0.86GHz to 1.02GHz for S11 ≤ -10 dB with the Axial Ratio (AR) below 3.50 dB. The band (0.86–0.96 GHz) is used in UHF RFID communication for fast scanning, logistics management, and animal identification. A GPR also offers a good balance between resolution and penetration depth at around 1 GHz. Therefore, the designed PDA may find its applications in both RFID and GPR systems.