A CMOS Rectifier With a Cross-Coupled Latched Comparator for Wireless Power Transfer in Biomedical Applications

被引：112

作者：

Cha, Hyouk-Kyu ^{[1
]}

Park, Woo-Tae ^{[1
]}

Je, Minkyu ^{[1
]}

机构：

[1] ASTAR, Inst Microelect, Singapore 117685, Singapore

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2012年 / 59卷 / 07期

关键词：

Biomedical implant devices; CMOS rectifier; cross-coupled latched comparator; wireless power transfer;

D O I：

10.1109/TCSII.2012.2198977

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：

A highly efficient rectifier for wireless power transfer in biomedical implant applications is implemented using 0.18-mu m CMOS technology. The proposed rectifier with active nMOS and pMOS diodes employs a four-input common-gate-type capacitively cross-coupled latched comparator to control the reverse leakage current in order to maximize the power conversion efficiency (PCE) of the rectifier. The designed rectifier achieves a maximum measured PCE of 81.9% at 13.56 MHz under conditions of a low 1.5-V-pp RF input signal with a 1-k Omega output load resistance and occupies 0.009 mm(2) of core die area.

引用

页码：409 / 413

页数：5

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