The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Leg Fracture Recovery Monitoring Simulation using Dual T-type Defective Microstrip Patch Antenna

쌍 T-형 결함 마이크로스트립 패치 안테나를 활용한 다리 골절 회복 모니터링 모의실험

  • 김병문 (경북도립대학교 전기전자과) ;
  • 윤리호 (경북도립대학교 전기전자과) ;
  • 이상민 (경북도립대학교 전기전자과) ;
  • 박연택 (탑런토탈솔루션) ;
  • 홍재표 (경일대학교 전자공학과)
  • Received : 2023.06.20
  • Accepted : 2023.08.17
  • Published : 2023.08.31
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Abstract

In this paper, we present the design and optimization process of an on-body microstrip patch antenna with a paired T-type defect for monitoring fracture recovery of human legs. This antenna is designed to be light, thin and compact despite the improvement of return loss and bandwidth performance by adjusting the size of the T-type defect. The structure around the applied human leg is structured as a 5-layer dielectric plane, and the complex dielectric constant of each layer is calculated using the 4-pole Cole-Cole model parameters. In a normal case without bone fracture, the return loss of the on-body antenna is -66.71dB at 4.0196GHz, and the return loss difference ΔS11 is 37.95dB when the gallus layer have a length of 10.0mm, width of 1.0mme, and height of 2.0mm. A 3'rd degree polynomial is presented to predict the height of the gallus layer for the change in return loss, and the polynomial has a very high prediction suitability as RSS = 1.4751, R2 = 0.9988246, P-value = 0.0001841.

본 논문은 인체 다리의 골절 회복 모니터링을 위한 쌍 T-형 결함이 있는 온 바디 마이크로스트립 패치 안테나의 설계 및 최적화 과정을 제시하였다. 이 안테나는 T-형 결함의 크기를 조절하여 향상된 반사손실 및 대역폭을 가지면서, 경박단소하도록 설계되었다. 적용된 다리 주변 구조는 5층 유전체 평면으로 구조화 하였으며, 각층의 복소유전상수는 4극 Cole-Cole 모델 매개변수를 사용하여 계산하였다. 골절이 없는 정상인 경우 온 바디 안테나의 반사손실은 4.0196GHz에서 -66.71dB이고, 갤러스 층의 길이 10.0mm, 폭 1.0mm, 높이 2.0mm 인 경우 반사손실 차 ΔS11 는 37.95dB이다. 반사손실 변화에 대한 갤러스 층 높이를 예측할 수 있도록 3차 다항식 모델을 제시하였으며, 이 다항식의 RSS = 1.4751, R2 = 0.9988246, P-value = 0.0001841로서 매우 높은 예측 적합성을 가진다.

Keywords

References

  1. B. Kim, L. Yun, S. Lee, Y. Park, and J. Hong, "Design and Simulation of an On-body Microstrip Patch Antenna for Lower Leg Osteoporosis Monitoring," Journal of the Korea Institute of Electronic Communication Sciences(KIECS), vol. 16, no. 4, 2021, pp. 763-770.
  2. S. B. S. Akram, N. Qaddoumi, and H. Al-Nashash, "Novel near-field microwave bone healing monitoring using open-ended rectangular waveguides," 2006 IEEE GCC Conference(GCC), Manama, Bahrain, 2006, pp. 1-5.
  3. P. Hall, "Antennas and propagation for body centric communications," In Proc. IET Seminar Antennas and propagation: Body-Centric Wireless Communications, London, U.K., Apr. 2007, pp. 1-4.
  4. S. Gabriel, R. W. Lau, and C. Gabriel, "The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissues," Phys. in Med. & Biol. vol. 41, 1996, pp. 2271-2293. https://doi.org/10.1088/0031-9155/41/11/003
  5. B. Kim, S. Lee, Y. Park, and J. Hong, "Analysis of Electromagnetic Wave Characteristics of Microwave Nondestructive Device for Inspecting Human Lower Leg," Journal of the Korea Institute of Electronic Communication Sciences(KIECS), vol. 16, no. 2, Apr. 30. 2021, pp. 385-394.
  6. H. Elftouh, N. A. Touhami, and M. Aghoutane, "Miniaturized Microstrip Patch Antenna with Spiral Defected Microstrip Structure," In Progress Electromagnetics Research Letters, vol. 53, 2015, pp. 37-44. https://doi.org/10.2528/PIERL15031003
  7. J. Hong, H. Son, and B. Kim, "Fabrication of CSLR-loaded Inset Fed Patch Antenna with a Conducting Reflector," Journal of the Korea Institute of Electronic Communication Sciences(KIECS), vol. 11, no. 11, Nov. 2016, pp. 1047-1052. https://doi.org/10.13067/JKIECS.2016.11.11.1047
  8. Y. Park, "A study of Patch Antenna for 6GHz," Journal of the Korea Institute of Electronic Communication Sciences(KIECS), vol. 17, no. 6, Dec. 2022, pp. 1063-1068.
  9. J. Yoon and C. Yu, "Design and Fabrication of Dual Linear Polarization Stack Antenna for 4.7GHz Frequency Band," Journal of the Korea Institute of Electronic Communication Sciences(KIECS), vol. 18, no. 2, Apr. 2023, pp. 251-258.
  10. J. Yoon, "Design and Fabrication of Dual Linear Polarization Antenna for 28 GHz Band" Journal of the Korea Institute of Electronic Communication Sciences(KIECS), vol. 17, no. 1, Feb. 2022, pp. 13-22.