Title :
A conformal 10 GHz rectenna for wireless powering of piezoelectric sensor electronics
Author :
Walsh, C. ; Rondineau, S. ; Jankovic, Marija ; Zhao, Gary ; Popovic, Zoya
Author_Institution :
Colorado Univ., Boulder, CO, USA
Abstract :
This paper presents the design, implementation and characterization of a rectenna array for wireless powering of sensor electronics for airframe fatigue detection. The rectenna aperture is powered 5 minutes at a time during inspection with a requirement of ±15V at 100mW. The maximum incident RF power is 10mW/cm2. A single rectenna element at this incident power density has an output power of 5 mW and an estimated efficiency of 50%. Each of the 25 antenna elements has an integrated rectifier, the outputs of which are combined in series to achieve the total required voltage and power at an estimated efficiency of 40%.
Keywords :
microstrip antennas; microwave antenna arrays; microwave power transmission; piezoelectric transducers; rectifiers; 10 GHz; 100 mW; 5 mW; 5 min; airframe fatigue detection; antenna elements; integrated rectifier; piezoelectric sensor; rectenna aperture; rectenna array; rectifying circuit; sensor wireless powering; Apertures; Fatigue; Inspection; Power generation; Radio frequency; Rectennas; Rectifiers; Sensor arrays; Sensor phenomena and characterization; Wireless sensor networks;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1516543
