Optimum wireless power transmission through reinforced concrete structure

Author

Jiang, Shan ; Georgakopoulos, Stavros V.

Author_Institution

Dept. of Electr. & Comput. Eng., Florida Int. Univ., Miami, FL, USA

fYear

2011

fDate

12-14 April 2011

Firstpage

50

Lastpage

56

Abstract

Wireless embedded sensors are ideally suitable for monitoring concrete structures because of their small size and ability to measure various quantities inside concrete. Wireless power transmission for such sensors embedded in plain/reinforced concrete slab is studied here. The return loss and transmission loss of dipole and patch antennas are studied at typical RFID frequencies. Also, the antennas´ performance is investigated for free-space, dry concrete, saturated concrete and reinforced concrete. Our results lead to the determination of the optimum operating frequency as well as the suitable antenna type for wireless powering. Finally, a matched rectification circuit is designed, and typical battery charging times are calculated.

Keywords

antennas; inductive power transmission; radiofrequency identification; reinforced concrete; wireless sensor networks; dipole antennas; optimum wireless power transmission; patch antennas; reinforced concrete structure; return loss; transmission loss; wireless embedded sensors; Concrete; Couplings; Propagation losses; Sensors; Slabs; Wireless communication; Wireless sensor networks; Wireless sensors; antenna design; concrete; power transmission; rebar;

fLanguage

English

Publisher

ieee

Conference_Titel

RFID (RFID), 2011 IEEE International Conference on

Conference_Location

Orlando, FL

Print_ISBN

978-1-4244-9607-5

Type

conf

DOI

10.1109/RFID.2011.5764636

Filename

5764636