Title :
Design and characterization of a passive harmonic sensor embedded in sand
Author :
Nassar, Ibrahim T. ; Weller, Thomas M.
Author_Institution :
Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL, USA
Abstract :
This paper demonstrates the suitability of the harmonic back-scatter approach for narrow-band, embedded remote structural health monitoring. A passive harmonic repeater was embedded and characterized at a depth of 15 cm in a sand box with inserted metal bars. The harmonic repeater comprises electrically-small 3-D receive and transmit antennas and a passive diode-based frequency doubler. The repeater operates by receiving a 2.4 GHz signal and transmitting back a signal at 4.8 GHz.
Keywords :
UHF antennas; intelligent sensors; receiving antennas; repeaters; transmitting antennas; depth 15 cm; embedded remote structural health monitoring; frequency 2.4 GHz; frequency 4.8 GHz; harmonic back-scatter; metal bars; passive diode-based frequency doubler; passive harmonic repeater; passive harmonic sensor; receive antennas; sand box; transmit antennas; Antennas; Attenuation; Geoscience; Harmonic analysis; 3-D antennas; Conversion gain; diode doubler; embedded sensors; passive microwave remote sensing; small antennas;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2013 IEEE 14th Annual
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5536-0
Electronic_ISBN :
978-1-4673-5535-3
DOI :
10.1109/WAMICON.2013.6572747
