Title :
Rectenna performance under power-optimized waveform excitation
Author :
Valenta, Christopher R. ; Durgin, G.D.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
April 30 2013-May 2 2013
Abstract :
Power-optimized waveforms (POWs) have been shown to increase the power-conversion efficiency in energy harvesting circuits. This paper is the first attempt to study the effects of a POW on these circuits and determine how its design can affect circuit performance. As an example, a 5.8 GHz single-shunt rectenna was designed to investigate the variation of POW parameters. It was shown that there is an optimal range of subcarrier spacing to maximize POW gain and minimize voltage ripple. Furthermore, a relationship between the maximum number of equal energy subcarriers, ripple voltage, and circuit parameters has been determined.
Keywords :
energy harvesting; microwave antennas; rectennas; POW gain maximization; POW parameters; circuit parameters; circuit performance; energy harvesting circuits; equal energy subcarriers; frequency 5.8 GHz; power-conversion efficiency; power-optimized waveform excitation; ripple voltage; single-shunt rectenna performance; subcarrier spacing; voltage ripple minimization; Energy harvesting; Impedance; Peak to average power ratio; Radio frequency; Radiofrequency identification; Rectennas; Schottky diodes;
Conference_Titel :
RFID (RFID), 2013 IEEE International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4673-5748-7
Electronic_ISBN :
978-1-4673-5749-4
DOI :
10.1109/RFID.2013.6548160
