Title :
Spectrum opportunities for electromagnetic energy harvesting from 350 mhz to 3 ghz
Author :
Tavares, Jorge ; Barreca, N. ; Saraiva, Henrique M. ; Borges, Luis M. ; Velez, Fernando J. ; Loss, Caroline ; Salvado, Rita ; Pinho, Pedro ; Goncalves, Ricardo ; Borges Carvalho, Nuno
Author_Institution :
Inst. de Telecomun. - DEM, Univ. da Beira Interior Covilha, Covilha, Portugal
Abstract :
This paper presents spectrum opportunities for radio frequency (RF) energy harvesting identified through power density measurements from 350 MHz to 3 GHz. The field trials have been performed in two different cities (Covilha and Lisbon), by using the NARDA-SMR spectrum analyser with measuring antenna, and the Signal Hound spectrum analysers, respectively. The scope of our research considers RF energy harvesting devices, enabling to convert RF energy to direct current (DC), providing an alternative source to power supply wireless sensor network (WSN) devices. Printed antennas, able to operate at GSM (900/1800) bands, are proposed with gains of the order of 1.8-2.06 dBi and efficiency 77.6-84%. Guidelines for the choice of textile materials for a wearable antenna are also provided.
Keywords :
energy harvesting; microstrip antennas; radio spectrum management; spectral analysers; wireless sensor networks; GSM bands; NARDA-SMR spectrum analyser; RF energy harvesting; WSN device; antenna; electromagnetic energy harvesting; frequency 350 MHz to 3 GHz; power supply wireless sensor network devices; printed antennas; signal hound spectrum analysers; spectrum opportunities; textile materials; wearable antenna; Antenna measurements; Antenna radiation patterns; Density measurement; Energy harvesting; Radio frequency; Wireless sensor networks; Energy harvesting; Power transmission; Printed antennas; Spectrum opportunities;
Conference_Titel :
Medical Information and Communication Technology (ISMICT), 2013 7th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4673-5770-8
Electronic_ISBN :
2326-828X
DOI :
10.1109/ISMICT.2013.6521714
