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

fYear

2013

fDate

7-9 April 2013

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WAMICON.2013.6572747

Filename

6572747