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910 MHz 대역 RFID용 태그 안테나의 소형화 설계

Miniaturization Design of Tag Antenna for RFID System in 910 MHz band

  • 박건도 (한국해양대학교 전파공학과) ;
  • 민경식 (한국해양대학교 전파공학과)
  • Park, Gun-Do (Graduate school of National Korea Maritime University) ;
  • Min, Kyeong-Sik (Department of Radio Science and Engineering, National Korea Maritime University)
  • 발행 : 2008.06.30

초록

본 논문은 910 MHz 대역에서 동작하는 RFID (radio Frequency identification) 태그 안테나의 소형화 설계 기법을 제안한다. folded-dipole 구조와 미앤더 선로 구조를 적용하여 태그 안테나의 소형화 설계를 행하였다. 최대 전력 전달을 위해서 테그 안테나와 칩의 임피던스의 허수부는 공액 정합되었다. 최적화된 안테나의 크기는 $50\;nm\;{\times}\;40\;nm\;{\times}\;1.6\;nm$로, 참고문헌 [4]와 비교하여 크기가 62 % 줄었다. 제작된 태그 안테나의 측정결과들은 예상과 잘 일치하는 것으로 확인되었다. 칩이 내장된 태그 안테나의 인식거리는 약 5 m로 관측되었다.

This paper presents a miniaturization design technique of radio frequency identification (RFID) tag antenna operated in 910 MHz band. Miniaturization structure design for a tag antenna is performed by structure application of the folded dipole and meander line. In order to realize the maximum power transmission, imaginary part of a chip impedance and a tag antenna impedance is matched by complex conjugate number. The optimized tag antenna size is $50\;nm\;{\times}\;40\;nm\;{\times}\;1.6\;nm$ and its size is reduced about 62 % comparison with antenna size of reference [4]. The measured results of fabricated tag antenna are confirmed the reasonable agreement with prediction. The read range of the tag antenna with chip observed about 5 m.

키워드

참고문헌

  1. Jeong, G. T., Yoon, J. H., Kang, M. K., Lee, H. C., and Kwak, K. S. (2004), "Design of a Meander Type Microstrip Antenna in the 5GHz," Korea Information and Communications Society, Vol. 29, No. 9A, pp. 1083-1090
  2. Kwon, H. I., Sin, Y. J., Lee, B. S., Choi, W. K., and Son, H. W.(2005), "UHF Band RFID Tag Antenna Design Technic by RCS," The Journal of Korea Electromagnetic Engineering Society, Vol. 16, No. 2, pp. 64-71
  3. Lee, G. H. and Kim, K. Y.(2004), "RFID Technology Tendency," The Journal of Korea Electromagnetic Engineering Society, Vol. 15, No. 5, pp. 43-49
  4. Mun, L. N., Kin, S. L., and Peter H. Cole(2005), "Analysis of constraints in small UHF RFID tag Design," IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications 2005, Vol. 1, pp. 507-510
  5. Min, K. S. and Kim, J. W.(2006), "Development of Insensitive Tag for Variation of Chip Impedance," The Korea Electromagnetic Engineering Society, Vol. 29, No. 2, pp. 90-93
  6. Pyo, C. S., Chae, J. S., and Kim, C. J.(2004), "RFID System Technology," The Journal of Korea Electromagnetic Engineering Society, Vol. 15, No. 5, pp. 21-31
  7. Yoon, Y. J., Hong, E. S., Kim, M. J., Lim, Y. S., and Jeong, B. H.(2002), "ANTENNA THEOTY AND DESIGN", KYOBO, pp. 222-228