An RF-DC Converter with Wide-Dynamic-Range Input Matching for Power Recovery Applications

被引：52

作者：

Abdelhalem, Sherif H. ^{[1
]}

Gudem, Prasad S. ^{[2
]}

Larson, Lawrence E. ^{[1
]}

机构：

[1] Univ Calif San Diego, San Diego, CA 92093 USA

[2] Qualcomm Inc, San Diego, CA 92121 USA

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2013年 / 60卷 / 06期

关键词：

Class-E rectifier; hybrid transformer duplexer; impedance matching; power recycling; RF-dc converter;

D O I：

10.1109/TCSII.2013.2258261

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 improved RF-dc converter based on a class-E rectifier with wide-dynamic-range input matching is presented. The input impedance is controlled by two varactor diodes to compensate for impedance changes with RF input power and dc loading conditions. The RF-dc converter achieved a peak efficiency of 60% and an S-11 less than -20 dB over an input RF power range of 12 dB and an operating battery voltage of 2.5-4.2 V at 800 MHz. An analytical model for input impedance and efficiency was developed and shown to match simulation and measurement results.

引用

页码：336 / 340

页数：5

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