Scavenging for Energy: A Rectenna Design for Wireless Energy Harvesting in UHF Mobile Telephony Bands

Performance analysis of a ultra-compact low-power rectenna in paper substrate for RF energy harvesting

“…The measurement results agree very well with the simulations, with a slight improvement, which can be noticed at 2.4 and 2.45 GHz, and a slight deterioration at 2.5 GHz. In particular, the rectenna features an efficiency of 40 % around -10 dBm, of 28 % around -15 dBm, and in the range [10,22] % around -20 dBm, corresponding to an output DC voltage in the order of 320, 240 and 60 mV respectively.…”

“…A rectenna based on a similar tapered annular slot antenna has also been reported in [10]. The latter rectenna works in the UHF mobile telephony bands (700-900 MHz), is based on a Dickson-charge pump and is fabricated on the TLY-5-0100 Taconic substrate, featuring a fractional bandwidth of 25 %.…”

Efficient RF energy harvest with a novel broadband Vivaldi rectenna

“…It is an effective approach to provide continuous power to electronic devices without battery requirements. [1][2][3] Generally, rectifying antenna (rectenna) is a crucial factor in RF energy harvest applications. Most of the rectennas focus on single frequency with a narrow band as RF to DC conversion efficiency can be enhanced at high-input power.…”

“…In multistatic state, the system uses more than one antenna for transmitting and receiving. 3 Moreover, GPR systems are classified as air-coupled and ground-coupled systems which depend on work methods. In air-coupled systems, the antennas are normally 40-50 cm above the ground surface, however, a ground-coupled system's antenna is almost above 5-10 cm.…”

Theoretical limits of rectifying efficiency for low-power wireless power transfer

“…The design guidelines are detailed, and the potential approach that improves the state‐of‐the‐art performance is illustrated. Although some broadband rectifier has been presented in the literature, it is noted that the proposed optimization is made for single‐frequency rectifier. In addition, earlier attempts have optimized the signal waveform or modulation schemes to maximize conversion efficiency, but this work selects continuous sinusoidal wave for the generality.…”