Title :
Optimal Waveforms for Efficient Wireless Power Transmission
Author :
Collado, Ana ; Georgiadis, Anthimos
Author_Institution :
Centre Tecnol. de Telecomunicacions de Catalunya, Castelldefels, Spain
Abstract :
This work shows how using specifically selected or designed waveforms in wireless power transfer (WPT) systems can lead to improved RF to dc conversion efficiency in rectifier circuits in the receiving end of these systems. Signals with different time domain waveforms are considered such as OFDM, white noise and chaotic waveforms, and the performance of a rectifier circuit operating at 433 MHz is evaluated when using these signals in comparison to a single carrier constant envelope signal. The performed experiments show that selecting high peak to average power ratio (PAPR) signals lead to improved RF-DC conversion efficiency in rectifier circuits.
Keywords :
radiofrequency power transmission; rectifying circuits; OFDM; PAPR signals; RF-DC conversion efficiency; WPT systems; chaotic waveforms; frequency 433 MHz; high peak to average power ratio signal selection; optimal waveforms; rectifier circuits; single carrier constant envelope signal; time domain waveforms; white noise; wireless power transmission; Energy harvesting; Peak to average power ratio; Power transmission; Time-domain analysis; White noise; Wireless communication; Energy harvesting; rectenna; rectifier; wireless power transmission;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2014.2309074
