Analysis and design strategy of UHF micro-power CMOS rectifiers for micro-sensor and RFID applications

被引：249

作者：

Yi, Jun ^{[1
]}

Ki, Wing-Hung ^{[1
]}

Tsui, Chi-Ying ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2007年 / 54卷 / 01期

关键词：

conduction angle; efficiency; leakage current; micro-sensor; optimization; rectifier; radio frequency identification (RFID);

D O I：

10.1109/TCSI.2006.887974

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 [电气工程]; 0809 [电子科学与技术];

摘要：

Design strategy and efficiency optimization of ultra-high-frequency (UHF) micro-power rectifiers using diode-connected MOS transistors with very low threshold voltage is presented. The analysis takes into account the conduction angle, leakage current, and,body effect in deriving the output voltage. Appropriate approximations allow analytical expressions for the output voltage, power consumption, and efficiency to be derived. A design procedure to maximize efficiency is presented. A superposition method is proposed to optimize the performance of multiple-output rectifiers. Constant-power scaling and area-efficient design are discussed. Using a 0.18-mu m CMOS process with zero-threshold transistors, 900-MHz rectifiers with different conversion ratios were designed, and extensive HSPICE simulations show good agreement with the analysis. A 24-stage triple-output rectifier was designed and fabricated, and measurement results verified the validity of the analysis.

引用

页码：153 / 166

页数：14

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