A 950-MHz rectifier circuit for sensor network tags with 10-m distance

Author

Umeda, Toshiyuki ; Yoshida, Hiroshi ; Sekine, Shuichi ; Fujita, Yumi ; Suzuki, Takuji ; Otaka, Shoji

Author_Institution

Mobile Commun. Lab., Corp. R&D Center, Kawasaki, Japan

Volume

41

Issue

1

fYear

2006

Firstpage

35

Lastpage

41

Abstract

This paper presents a 950-MHz wireless power transmission system and a high-sensitivity rectifier circuit for ubiquitous sensor network tags. The wireless power transmission offers a battery-life-free sensor tag by recharging the output power of a base station into a secondary battery implemented with the tag. For realizing the system, a high-sensitivity rectifier with dynamic gate-drain biasing has been developed in a 0.3-μm CMOS process. The measurement results show that the proposed rectifier can recharge a 1.2-V secondary battery over -14-dBm input RF power at a power conversion efficiency of 1.2%. In the proposed wireless system, this sensitivity corresponds to 10-m distance communication at 4-W output power from a base station.

Keywords

CMOS integrated circuits; UHF integrated circuits; battery chargers; inductive power transmission; power transmission; radiofrequency identification; secondary cells; wireless sensor networks; 0.3 micron; 1.2 V; 10 m; 4 W; 950 MHz; CMOS; bias voltage distributor; radio frequency identification; rectifier circuit; secondary battery; ubiquitous sensor network tags; wireless power transmission system; Base stations; Battery charge measurement; CMOS process; Circuits; Power generation; Power measurement; Power transmission; Rectifiers; Sensor systems; Wireless sensor networks; Bias voltage distributor; effective threshold voltage; high-sensitivity rectifier; radio-frequency identification (RFID); wireless power transmission;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2005.858620

Filename

1564343