Title :
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
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;
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
DOI :
10.1109/ICSICT.2010.5667694
