Design and Safety Considerations of an Implantable Rectenna for Far-Field Wireless Power Transfer

被引：170
作者：
Liu, Changrong [1 ,2 ]
Guo, Yong-Xin [1 ,3 ]
Sun, Hucheng [1 ]
Xiao, Shaoqiu [2 ]
机构：
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore
[2] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
[3] Natl Univ Singapore, Suzhou Res Inst, Suzhou 215123, Jiangsu, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 11期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
Far-field RF powering; implantable antenna; industrial; medical (ISM); planner inverted-F antenna (PIFA); rectifier; scientific; wireless power transfer; 2.45-GHZ RECTENNA; HUMAN HEAD; ANTENNAS; TRANSMISSION; COMMUNICATION; BIOTELEMETRY; DEVICES; SPACE; GHZ;
D O I：
10.1109/TAP.2014.2352363
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An implantable rectenna, which consists of a planar inverted-F antenna (PIFA) and a rectifier circuit, is proposed for far-field wireless power transfer. The PIFA has a folded ground plane to miniaturize its size. The performance of the wireless power link between the implanted antenna and an external antenna is examined. A method of adding a parasitic patch over the human body is used to enhance the wireless power link, thus to increase the received power level. Safety considerations of far-field RF powering are discussed. The RF-to-DC conversion circuit efficiency is optimized after the receiver power level of the implantable antenna is estimated based on the safety considerations. Finally, a rectifier circuit and an integrated rectenna solution are discussed.
引用
收藏
页码：5798 / 5806
页数：9
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