Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of a Miniaturized High-Isolation Diversity Antenna for Wearable WBAN Applications

  • Kim, Seongjin (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Kwon, Kyeol (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Choi, Jaehoon (Department of Electronics and Computer Engineering, Hanyang University)
  • Received : 2012.12.11
  • Accepted : 2013.02.27
  • Published : 2013.03.31
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Abstract

This paper proposes a miniaturized high-isolation diversity antenna for wearable wireless body area network (WBAN) applications. An inverted-F type radiating element is used to reduce the overall dimension of the proposed antenna to $30mm{\times}30mm{\times}2.5mm$. The antenna performance on the human body phantom is analyzed through simulation and the performance of the fabricated antenna is verified by comparing the measured data with that of the simulation when the antenna is placed on a semi-solid flat phantom with equivalent electrical properties of a human body. The fabricated antenna has a 10 dB return loss bandwidth over the Industrial Scientific Medical (ISM) band from 2.35 GHz to 2.71 GHz and isolation is higher than 28 dB at 2.45 GHz. The measured peak gain of antenna elements # 1 and # 2 is -0.43 dBi and -0.54 dBi, respectively. Performance parameters are analyzed, including envelope correlation coefficient (ECC), mean effective gain (MEG), and the MEG ratio. In addition, the specific absorption ratio (SAR) distributions of the proposed antenna are measured for consideration in use.

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References

  1. S. Lee, Y. Yu, K. Kwon, K. Ito, and J. Choi, "Design of a flexible diversity zeroth-order resonance antenna for WBAN applications," IEICE Electronics Express, vol. 9, no. 8, pp. 758-764, Apr. 2012. https://doi.org/10.1587/elex.9.758
  2. N. Haga, K. Saito, M. Takahashi, and K. Ito, "Characteristics of cavity slot antenna for body-area networks," Antennas and Propagation, IEEE Transaction on, vol. 57, no. 4, pp. 837-843, Apr. 2009. https://doi.org/10.1109/TAP.2009.2014577
  3. A. A. Serra, P. Nepa, G. Manara, and P. S. Hall, "Diversity for body area networks," URSI General Assembly, 2008.
  4. L. Akhoondzadeh-Asl, I. Khan, and P. S. Hall, "Polarisation diversity performance for on-body communication applications," IET Microwaves Antennas & Propagation, vol. 5, no. 2, pp. 232-236, Jan. 2011. https://doi.org/10.1049/iet-map.2009.0460
  5. Takahiro Aoyagi, Minseok Kim, Jun-ichi Takada, Kiyoshi Hamaguchi, and Ryuji Kohno, "Numerical simulation for wearable BAN propagation channel during various human movements," IEICE TRAN. on Comm., vol. E94-B, no. 9, pp. 2496-2500, Sep. 2011. https://doi.org/10.1587/transcom.E94.B.2496
  6. S. Yoo, S. Kahng, and J. Kim, "A compact MIMO antenna using ZOR split ring resonator radiators with a decoupling structure," Microwave Journal, vol. 54, no. 11, pp. 26, Nov. 2011.
  7. Ansys High Frequency Structure Simulator (HFSS), V14.0, Ansys Corporation.
  8. D. L. Means, W. Kwok, "Evaluating compliance with FCC guidelines for human exposure to radiofrequency electromagnetic fields, federal communications commission office of engineering & technology," Supplement C (Edition 01-01) to OET Bulletin 65 (edition 97-01), Jun. 2001.
  9. S. Blanch, J. Romeu, and I. Corbella, "Exact representation of antenna system diversity performance from input parameter description," IEEE Electron Lett., vol. 39, no. 9, pp. 705-707, May 2003. https://doi.org/10.1049/el:20030495
  10. [Online] http://emfsafety.koreasme.com/

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