Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A 13.56 MHz CMOS Multi-Stage Rectifier for Wireless Power Transfer in Biomedical Applications

바이오응용 무선전력전달을 위한 13.56 MHz CMOS 다단 정류기

  • Cha, Hyouk-Kyu (Department of Electrical and Information Engineering, Seoul National University of Science and Technology)
  • 차혁규 (서울과학기술대학교 전기정보공학과)
  • Received : 2012.10.23
  • Published : 2013.03.25
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Abstract

An efficient multi-stage rectifier for wireless power transfer in deep implant medical devices is implemented using $0.18-{\mu}m$ CMOS technology. The presented three-stage rectifier employs a cross-coupled topology to boost a small input AC signal from the external device to produce a 1.2-1.5 V output DC signal for the implant device. The designed rectifier achieves a maximum measured power conversion efficiency of 70% at 13.56 MHz under the conditions of a low 0.6-Vpp RF input signal with a $10-k{\Omega}$ output load resistance.

$0.18-{\mu}m$ CMOS 반도체 공정을 이용하여 신체에 깊이 이식되어 있는 deep implant 의료 전자기기에서의 무선전력전달을 위한 고효율의 다단 정류기 (multi-stage rectifier)를 구현하였다. 세 개의 단계로 이루어진 정류기는 cross-coupled 된 구조를 이용하여 외부에서 전달되는 작은 AC 입력 신호를 boost하여 1.2-1.5 V의 DC 출력 신호를 implant 전자기기로 전달한다. 설계 된 정류기는 13.56 MHz에서 0.6-Vpp의 작은 RF 입력 신호와 $10-k{\Omega}$의 load 저항이 연결 된 측정 환경에서 최대 70 %의 전력 변환 효율을 달성하였다.

Keywords

References

  1. P.B. Khannur, K.L. Chan, J.H. Cheong, K. Kang, A.A. Lee, X. Liu, H.J. Lim, K. Ramakrishna, and M. Je, "A 21.6uW inductively powered implantable IC for blood flow measurement," in IEEE Asian Solid-State Circuits Conf., Nov. 2010
  2. R.-F. Xue, J.H. Cheong, H.-K. Cha, X. Liu, P. Li, H.J. Lim, L.S. Lim, M.-Y. Cheng, C. He, W.-T. Park, and M. Je, "Ultra-low-power wireless implanable blood flow sensing microsystem for vascular graft applications," in IEEE Intl. Symp. Integ. Circuits, Nov. 2011
  3. C.-L. Chen, K.-H. Chen, and S.-I. Liu, "Efficiency-enhanced CMOS rectifier for wireless telemetry," Electronic Letters, vol.43, no.18, Aug. 2007
  4. S.T. Kim, T. Song, J. Choi, F. Bien, K. Lim, and J. Laskar, "Semi-active high-efficient CMOS rectifier for wireless power transmission," in IEEE RF Integrated Circuits Symposium, Jun. 2010, pp. 97-100
  5. S. Guo and H. Lee, "An efficiency-enhanced CMOS rectifier with unbalanced-biased comparators for transcutaneous-powered high-current implants," IEEE J. of Solid-State Circuits, vol.44, no.6, pp. 1796-1804, Jun. 2009 https://doi.org/10.1109/JSSC.2009.2020195
  6. Y.-H. Lam, W.-H. Ki, and C.-Y. Tsui, "Integrated low-loss CMOS active rectifier for wirelessly powered devices," IEEE Trans. Circuits and Systems II, vol. 54, no. 6, pp. 1378-1382, Jun. 2006
  7. H.-M. Lee and M. Ghovanloo, "An integrated power-efficient active rectifier with offset-controlled high speed comparators for inductively powered implants," IEEE Trans. Circuits and Systems I, vol. 58, no. 8, pp. 1749-1760, Aug. 2011 https://doi.org/10.1109/TCSI.2010.2103172
  8. 최영수, 부영건, 박준성, 임승옥, 문연국, 김선희, 이강윤, "CMOS 공정을 이용한 고효율 Active Rectifier 설계," 대한전자공학회 2011년 SoC학술대회, pp.262-265, Apr., 2011
  9. 최영수, 이강윤, "넓은 입력 범위를 갖는 무선 전력 전송용 다중 모드 정류기 설계," 대한전자공학회, 전자공학회논문지-SD, 제49권 SD편, 제4호, pp. 34-42, Apr. 2012.