Title :
A low-cost 2.45-GHz wireless power link for biomedical devices
Author :
Hu, Sanming ; Cheong, Jia Hao ; Gao, Yuan ; Ho, Michael Chee Keong ; Je, Minkyu ; Madihian, Mohammad ; Khait, Semion
Author_Institution :
Inst. of Microelectron., A*STAR (Agency for Sci., Singapore, Singapore
Abstract :
This paper presents a 2.45-GHz wireless link to power on the miniaturized biomedical devices. In this link, a chip antenna is adopted for RF power transmitting, and a resonant network consisting of a compact inductor and a chip capacitor is employed for energy harvesting. A prototype is fabricated and measured in the time- and frequency-domain. The measured results show that this power transfer link meets the system requirement. In addition, in the case of a capacitor with 20% variation, this link can still achieve the system required efficiency. It therefore eliminates the adaptive matching circuit and simplifies the system design.
Keywords :
biomedical equipment; energy harvesting; frequency-domain analysis; radio links; time-domain analysis; RF power transmitting; chip antenna; chip capacitor; compact inductor; energy harvesting; frequency 2.45 GHz; frequency-domain; miniaturized biomedical devices; resonant network; time-domain; wireless power link; Antenna measurements; Antennas; Capacitors; Frequency measurement; Semiconductor device measurement; Wireless communication; Wireless sensor networks; antenna; chip components; near field; resonant coupling; wireless power transfer;
Conference_Titel :
Antennas and Propagation (APCAP), 2012 IEEE Asia-Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-0666-9
DOI :
10.1109/APCAP.2012.6333223