Optimization of output voltage and stage number of UHF RFID power rectifier

Author

Jia, Jingbin ; Leung, Ka Nang

Author_Institution

Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China

fYear

2010

Firstpage

412

Lastpage

414

Abstract

In UHF RFID tag IC, multiple charge-pump stages are needed to form a rectifier for achieving a sufficiently high output voltage to supply the other circuit blocks. To save chip area and achieve a high output voltage simultaneously, the number of charge-pump stages should be optimized in accordance with the amplitude of the RF input signal. In this paper, an analysis on the relation between the output voltage, the number of charge-pump stages and the RF signal amplitude is presented. A rectifier is implemented using a 0.18-μm CMOS process with low-threshold devices. Simulations with 900-MHz RF input signal verify presented analysis.

Keywords

CMOS integrated circuits; UHF devices; optimisation; radiofrequency identification; rectifiers; CMOS process; RF input signal; UHF RFID power rectifier; UHF RFID tag IC; low-threshold devices; multiple charge-pump stages; optimization; output voltage; stage number; Integrated circuit modeling; MOSFET circuits; RF signals; Radio frequency; Radiofrequency identification; Rectifiers; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5797-7

Type

conf

DOI

10.1109/ICSICT.2010.5667694

Filename

5667694