Automatic tuning of a resonant circuit in wireless power supply systems for biomedical sensors

被引：3
作者：
Blakiewicz, G. [1 ]
Jakusz, J. [1 ]
Jendernalik, W. [1 ]
Szczepanski, S. [1 ]
机构：
[1] Gdansk Univ Technol, Fac Elect Telecommun & Informat, 11-12 Narutowicza St, PL-80233 Gdansk, Poland
来源：
BULLETIN OF THE POLISH ACADEMY OF SCIENCES-TECHNICAL SCIENCES | 2016年 / 64卷 / 03期
关键词：
CMOS circuits; automatic tuning; impedance matching; resonant circuit; FREQUENCY; COILS;
D O I：
10.1515/bpasts-2016-0072
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, a tuning method of a resonant circuit suited for wireless powering of miniature endoscopic capsules is presented and discussed. The method allows for an automatic tuning of the resonant frequency and matching impedance of a full wave rectifier loading the resonant circuit. Thereby, the receiver tunes so as to obtain the highest power efficiency under given conditions of transmission. A prototype receiver for wireless power reception, fabricated in in AMS CMOS 0.35 mu m technology, was used to verify correct operation of the proposed tuning. The prototype system produces a stable supply voltage, adjustable in the range of 1.2-1.8 V at a maximum output current of 100-67 mA, which is sufficient to power a typical endoscopic capsule.
引用
收藏
页码：641 / 646
页数：6
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