Design of spiral-shaped UHF near-field reader antenna for RFID applications

  title={Design of spiral-shaped UHF near-field reader antenna for RFID applications},
  author={Won-Seok Lee and Kyoung-Sub Oh and Jong-Won Yu},
  journal={2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals},
A type of ultra-high frequency (UHF, 840–960MHz) band near-field antenna for RFID applications is proposed. The proposed near-field reader antenna consists of two spiral-shaped transmission lines and lines are parallel to each other. By adjusting the distance between two lines of the reader antenna, the strength of the field between two transmission lines and the recognition distance are able to be controlled. The antenna printed on a FR4 printed circuit board (PCB) with an overall size of 150… CONTINUE READING
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