Self-powered integrated rectifier for wireless medical energy harvesting applications

This paper reports on the results of an integrated rectifier for wirelessly powered medical electronic devices. To considerably enhance the rectification efficiency, high-performance active diodes are incorporated. In addition, a fine cost-effective and energy-efficient back telemetry mechanism with increased robustness against physical variations in the external reader and internal transponder (implant) has been equipped. Fabricated in a 0.18-μm technology, the design demonstrates that it is able to achieve maximum conversion efficiency approximately 90%, while at the same time dramatically reducing the overhead to practical implementation. It has also been proved for its full functionality in the asserted built-in robust back telemetry.

[1]  Wentai Liu,et al.  Design and analysis of an adaptive transcutaneous power telemetry for biomedical implants , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[2]  Jin Liu,et al.  A 13.56 MHz RFID transponder front-end with merged load modulation and voltage doubler-clamping rectifier circuits , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[3]  M. Ghovanloo,et al.  Fully integrated wideband high-current rectifiers for inductively powered devices , 2004, IEEE Journal of Solid-State Circuits.

[4]  Shen-Iuan Liu,et al.  Efficiency-enhanced CMOS rectifier for wireless telemetry , 2007 .

[5]  P. H. Peckham,et al.  Data transmission from an implantable biotelemeter by load-shift keying using circuit configuration modulator , 1995 .

[6]  Gert Cauwenberghs,et al.  Power harvesting and telemetry in CMOS for implanted devices , 2004, IEEE Transactions on Circuits and Systems I: Regular Papers.

[7]  Jyun-Yue Hong,et al.  Efficient CMOS rectifier for inductively power-harvested implants , 2008, 2008 IEEE International Conference on Electron Devices and Solid-State Circuits.

[8]  Maysam Ghovanloo,et al.  Incorporating Back Telemetry in a Full-Wave CMOS Rectifier for RFID and Biomedical Applications , 2007, 2007 IEEE International Symposium on Circuits and Systems.