Author details

Qi Xu1,4, Tianfeng Wang2,4, Shitong Mao3 , Wenyan Jia3 , Zhi-Hong Mao3,5 and Mingui Sun3,4,5\*

1 School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan, China

2 Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China

3 Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, USA

4 Department of Neurosurgery, University of Pittsburgh, Pittsburgh, USA

5 Department of Bioengineering, University of Pittsburgh, Pittsburgh, USA

\*Address all correspondence to: drsun@pitt.edu

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

1.23 and 0.11 V, respectively. The relatively small standard deviation indicates a nearly uniform magnetic field distribution, as observed in Figure 24. The results indicate that a flat magnetic field can be achieved by our power mat design and that this design is effective for WPT to biomedical implants in freely moving animals.

primary and secondary coil separation of (a) 8 cm and (b) 10 cm.

Voltage distribution computed by interpolating the 21 measured voltage values across the load coil at a constant

Comparison of measured and calculated vertical magnetic field over the prototype mat.

Recent Wireless Power Transfer Technologies

We have presented a DH coil as the WPT receiver in implantable medical devices. This new coil has several attractive properties that it can be made conveniently at high precision on a flexible PCB along with other electronic components, forming a complete flexible sheet. This sheet, after being hermetically sealed, can be wrapped around a tubular biological structure, such as a blood vessel or a nerve bundle, to perform diagnostic, monitoring and therapeutic functions. The DH coil has been mathematically analyzed, and expressions for both mutual inductance and self-inductance have been derived. We have found that the DH coil provides a

4. Conclusion

88

Figure 23.

Figure 24.
