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The instability behaviors of the tag antenna while close to the metal surface is reduced by introducing platform-tolerant Artificial Magnetic Conductor (AMC) based tag antenna at microwave frequency for Radio Frequency Identification (RFID) applications. The proposed antenna contains with meander shape radiating element along with T-shape matching network and AMC layer to achieve stable high gain. T-network is used to match the conjugate complex impedance of the microchip. To further strengthen the radiation performances on conductive objects, AMC slab is unified with the proposed antenna. Gain, front-back ratio, and other antenna parameters are also examined. The dimension of the tag antenna is 0.19 \(\lambda_{0}\) × 0.32 \(\lambda_{0}\) substrate, where \(\lambda_{0}\) is the free-space wavelength corresponding to the resonant frequency. The simulated results exhibit that antenna accomplished 104.08% Impedance bandwidth and stable gain with maximum value of 7.1 dBi. The composites structure of the tag antenna is befitting on any metallic objects in RFID Industry.

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Metal Insensitive High Gain RFID Tag Antenna

  • 会议论文

  • 发表日期：

    2025年

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  • Krishna Mazumder,
  • Anumoy Ghosh

摘要

The instability behaviors of the tag antenna while close to the metal surface is reduced by introducing platform-tolerant Artificial Magnetic Conductor (AMC) based tag antenna at microwave frequency for Radio Frequency Identification (RFID) applications. The proposed antenna contains with meander shape radiating element along with T-shape matching network and AMC layer to achieve stable high gain. T-network is used to match the conjugate complex impedance of the microchip. To further strengthen the radiation performances on conductive objects, AMC slab is unified with the proposed antenna. Gain, front-back ratio, and other antenna parameters are also examined. The dimension of the tag antenna is 0.19 \(\lambda_{0}\) × 0.32 \(\lambda_{0}\) substrate, where \(\lambda_{0}\) is the free-space wavelength corresponding to the resonant frequency. The simulated results exhibit that antenna accomplished 104.08% Impedance bandwidth and stable gain with maximum value of 7.1 dBi. The composites structure of the tag antenna is befitting on any metallic objects in RFID Industry.