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

页码：641 / 646

页数：6

共 13 条

[1] Technique to improve CMRR at high frequencies in CMOS OTA-C filters [J].