Radio-triggered solar and RF power scavenging and management for ultra low power wireless medical applications

Author

Lin, Kuan-Yu ; Tsang, Tommy K K ; Sawan, Mohamad ; El-Gamal, Mourad N.

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ.

fYear

2006

fDate

21-24 May 2006

Lastpage

5731

Abstract

The design of a dual-source power scavenging and management system for ultra low power wireless medical applications is presented. Power scavenging is achieved by harvesting energy both from solar (primary) and RF power (secondary) sources. Depending on the available energy, the system can supply 1-2mW of power to a wireless device, with up to a 50% duty cycle. A radio-triggering based technique is used to control the activation and shutting down of the complete wireless system, and thus eliminates energy wasting wake-up periods. The system provides a regulated output voltage of 1.5V, with a total power consumption of less than 8.0muW in the sleep mode, and 48muW in the operating mode

Keywords

CMOS integrated circuits; integrated circuit design; low-power electronics; power supplies to apparatus; prosthetic power supplies; radiofrequency integrated circuits; rectifiers; solar cells; wireless sensor networks; 1 to 2 mW; 1.5 V; 48 muW; RF power source; dual-source power scavenging design; radio-triggering technique; solar power source; ultra low power wireless medical applications; wireless system; Biomedical equipment; Control systems; Energy management; Medical control systems; Medical services; Power supplies; Power system management; Radio control; Radio frequency; Radio spectrum management;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1693936

Filename

1693936