Title :
Ambient energy harvesting from 2-way talk-radio signals for “smart” meter and display applications
Author :
Bito, Jo ; Sangkil Kim ; Tentzeris, Manos ; Nikolaou, Symeon
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A ambient wireless energy harvesting prototype made of a compact antenna and an optimized RF-DC converter circuit is designed to convert the wireless signal emitted by a 2-way radio into usable DC power at which many low power electronics and displays used in sensors and smart meters could operate. The output DC power of -4.75dBm is achieved with 1 M-ohm load resistance at 13 cm away from the 2-way radio whose transmitting power is 2W. Measurements show electronics with operating voltage of 18 V as well as capacitive LCD display can be powered on using ambient RF signals eliminating the need for batteries.
Keywords :
energy harvesting; liquid crystal displays; low-power electronics; sensors; smart meters; 2-way talk-radio signals; DC power; RF-DC converter circuit optimization; ambient RF signals; ambient wireless energy harvesting prototype; capacitive LCD display; compact antenna; distance 13 cm; low power electronics; power 2 W; resistance 1 Mohm; sensors; smart meter; voltage 18 V; wireless signal; Antenna radiation patterns; Charge pumps; Dipole antennas; Energy harvesting; Sensors; Wireless communication; Wireless sensor networks;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905002
