Title :
A 2.4GHz Efficiency-Enhanced Rectifier for Wireless Telemetry
Author :
Chen, Ke-Hou ; Lu, Jian-Hao ; Liu, Shen-Iuan
Author_Institution :
Nat. Taiwan Univ., Taipei
Abstract :
A 2.4 GHz full-wave AC-to-DC rectifier for wireless telemetry applications is presented. A conventional full-wave rectifier using diode-connected MOS transistors suffers from the power loss due to the intrinsic threshold voltage. In this paper, a full-wave rectifier using a transformer is presented to improve the efficiency. It has been fabricated by using the MOS transistors with medium threshold voltages in 0.18 mum CMOS process. When input power ranges from 6 dBm~12 dBm, this proposed 2.4 GHz full-wave rectifier improves the efficiency of 2.5%, compared with the conventional one.
Keywords :
AC-AC power convertors; CMOS integrated circuits; UHF integrated circuits; rectifiers; telemetry; CMOS process; MOS transistors; efficiency-enhanced rectifier; frequency 2.4 GHz; full-wave AC-to-DC rectifier; size 0.18 mum; transformer circuit; wireless telemetry; CMOS process; Capacitors; Circuits; Diodes; MOSFETs; Power conversion; Radiofrequency identification; Rectifiers; Telemetry; Threshold voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-1623-3
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405793
