Recycling RF energy in the GSM-1800 band
In this paper, we present a study about the recuperation and the wireless transfer of the RF micro-energy in the waveband 1800 MHz -1900MHz.
Actually, a series of measurements of the power RF available in the ambient surrounding using a spectrum-analyzer has enabled to us to determine the level of this power which is nearly constant in time and of order -14.5dBm/m (33.4W/m). Meanwhile, two types of antenna were studied to recover the power RF. The first is a spiral antenna which represents a quasi unidirectional radiation with a circular polarization and a measured gain equal to 2.24dBi, the second is a array of circular patch antenna with a rectilinear polarization and a measured gain equal to 5.24dBi.
Additionally, a rectifier RF/DC with low power of input based on Schottky diodes (voltage double) was characterized. Two systems (rectenna) were also tested in the ambient surrounding where the maximum measured power is about 0.33W.
What is more, some energy transfer tests were carried out inside the anechoic room whose the efficiency of conversion RF/DC could reach 20%. The maximum transferred power DC is equal to 5.6W, with an 18K#937; of load.
Keywords: antenna, rectifier RF/DC, wireless power transmission, rectenna, harvesting RF energy
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ABOUT THE AUTHORS
Bouchouicha Dhaou
D. BOUCHOUICHA was born in Medenine, Tunisia, in 1978. He received the M.A. degree in electronics (high frequency systems of communication) from the university of Marne-la-Vallée, Paris –France, in 2006. In 2010 he received the Ph.D. degree in electronics from the University of François Rabelais, Tours, France. He is currently a Professor of electronics engineering with the Institut Suprieur d’Informatique, Medenine, Tunisia. Where his research involves RF and microwaves. His field of interest is the design of hybrid, and passive microwave circuits, antennas and their applications in wireless communications, and wireless power transmission
Latrach Mohamed
Mohamed LATRACH (M’03) was born in Douar Ksiba, Sless, Morocco, in 1958. He received the Ph.D. degree in electronics from the University of Limoges, Limoges, France, in 1990. He is currently a Professor of microwave engineering with the Ecole Suprieure d’Electronique de l’Ouest (ESEO), Angers, France, where his research involves RF and microwaves. His field of interest is the design of hybrid, monolithic active, and passive microwave circuits, metamaterials, LH materials, antennas and their applications in wireless communications, and wireless power transmission.
Sakli Hedi
Hedi SAKLI, is born in Tunisia in 1966, holds a PhD in telecommunications from the National Engineering School of Tunis, Tunisia. It is since 2004 assistant prof. at the University of Gabes. His research interests propagation in anisotropic media and metamaterials, numerical methods in electromagnetics, modeling of transistors and antennas.
Bouchouicha Dhaou
D. BOUCHOUICHA was born in Medenine, Tunisia, in 1978. He received the M.A. degree in electronics (high frequency systems of communication) from the university of Marne-la-Vallée, Paris –France, in 2006. In 2010 he received the Ph.D. degree in electronics from the University of François Rabelais, Tours, France. He is currently a Professor of electronics engineering with the Institut Suprieur d’Informatique, Medenine, Tunisia. Where his research involves RF and microwaves. His field of interest is the design of hybrid, and passive microwave circuits, antennas and their applications in wireless communications, and wireless power transmission
Latrach Mohamed
Mohamed LATRACH (M’03) was born in Douar Ksiba, Sless, Morocco, in 1958. He received the Ph.D. degree in electronics from the University of Limoges, Limoges, France, in 1990. He is currently a Professor of microwave engineering with the Ecole Suprieure d’Electronique de l’Ouest (ESEO), Angers, France, where his research involves RF and microwaves. His field of interest is the design of hybrid, monolithic active, and passive microwave circuits, metamaterials, LH materials, antennas and their applications in wireless communications, and wireless power transmission.
Sakli Hedi
Hedi SAKLI, is born in Tunisia in 1966, holds a PhD in telecommunications from the National Engineering School of Tunis, Tunisia. It is since 2004 assistant prof. at the University of Gabes. His research interests propagation in anisotropic media and metamaterials, numerical methods in electromagnetics, modeling of transistors and antennas.
