TY - GEN
T1 - Experimenting Waveforms and Efficiency in RF Power Transfer
AU - Ayir, Nachiket
AU - Trujillo Fierro, Marcelo Fabian
AU - Riihonen, Taneli
AU - Allen, Markus
N1 - INT=elen,"Trujillo Fierro, Marcelo Fabian"
jufoid=70577
PY - 2019/6/1
Y1 - 2019/6/1
N2 - In this paper, we present a prototype test-bed for radio-frequency (RF) wireless power transfer (WPT) comprising a software-defined radio (SDR) transmitter and an energy harvesting receiver with a diode-based rectifier. The test-bed allows us to study the end-to-end efficiency of RF WPT when employing different co-phased multisine waveforms. In particular, we analyze the clipping and non-linear behaviours of the transmitter by experimentally evaluating how they affect the performance of waveforms. The experimental results indicate that transmitting impulse-like signals is actually not optimal for RF WPT in practice despite they would be ideal in terms of rectifier efficiency. Instead, the results highlight the superior performance of single-tone signals over co-phased multisines in terms of both end-to-end WPT efficiency and spectral purity.
AB - In this paper, we present a prototype test-bed for radio-frequency (RF) wireless power transfer (WPT) comprising a software-defined radio (SDR) transmitter and an energy harvesting receiver with a diode-based rectifier. The test-bed allows us to study the end-to-end efficiency of RF WPT when employing different co-phased multisine waveforms. In particular, we analyze the clipping and non-linear behaviours of the transmitter by experimentally evaluating how they affect the performance of waveforms. The experimental results indicate that transmitting impulse-like signals is actually not optimal for RF WPT in practice despite they would be ideal in terms of rectifier efficiency. Instead, the results highlight the superior performance of single-tone signals over co-phased multisines in terms of both end-to-end WPT efficiency and spectral purity.
KW - RF energy harvesting
KW - Wireless power transfer
U2 - 10.1109/MWSYM.2019.8700791
DO - 10.1109/MWSYM.2019.8700791
M3 - Conference contribution
AN - SCOPUS:85069954246
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 1140
EP - 1143
BT - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PB - IEEE
T2 - IEEE MTT-S International Microwave Symposium
Y2 - 2 June 2019 through 7 June 2019
ER -