Efficiency improvement of the impulsive wireless power transmission through biomedical tissues by varying the duty cycle

Yu Lin Yang, Chin Lung Yang, Chi Lin Tsai, Chieh Sen Lee

研究成果: Conference contribution

7 引文 斯高帕斯(Scopus)

摘要

It is very challenging to improve the power conversion efficiency (PCE) in wireless power transmission (WPT), especially through the propagation channel of biological tissue. The received power for biomedical applications is usually very weak due to the security regulations of Specific Absorption Rate (SAR) and the propagation attenuation by biological tissues. So the input power (P IN) of the RF-DC rectifier is usually not high, and the optimal PCE cannot be achieved as conventional efficient rectifiers do. In this paper, we propose an impulsive technique to promote the PCE at a low input power level at 10 dBm and to optimize the performance by varying the duty cycles of the impulsive power waves. Therefore, the dc output voltage (Vout) and PCE can be effectively improved from 1.176 to 1.905 volt (62%) and from 13.83% to 36.29%, respectively. Furthermore, the wireless channels for such wideband power transmission techniques and the biological channel effects are investigated in this paper. Fundamental analysis is setup to predict the tissue attenuation loss. Through the measurements, we found that our proposed techniques can improve the Vout and PCE within the 10 mm thickness of biological tissues (pork) and supply more wireless power for biomedical implantable systems.

原文English
主出版物標題2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission
主出版物子標題Technologies, Systems, and Applications, IMWS-IWPT 2011 - Proceedings
頁面175-178
頁數4
DOIs
出版狀態Published - 2011 七月 14
事件2011 1st IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, IMWS-IWPT 2011 - Kyoto, Japan
持續時間: 2011 五月 122011 五月 13

出版系列

名字2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, IMWS-IWPT 2011 - Proceedings

Other

Other2011 1st IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, IMWS-IWPT 2011
國家/地區Japan
城市Kyoto
期間11-05-1211-05-13

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 電氣與電子工程

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