Title :
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.
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;
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
DOI :
10.1109/ISCAS.2006.1693936
