Impact of symbol rate and roll-off factor on rectifier RF-DC conversion efficiency for WiCoPT system

摘要

Wireless Communication and Power Transmission (WiCoPT) is a technology that enables to transfer data and power simultaneously. This paper analyzes and clarifies the impact of input modulated signals on the RF-DC power conversion behavior of the rectifier. The RF-DC power conversion efficiency (PCE) was characterized by input power, symbol rate, and roll-off factor of the modulated input signal. On the low symbol rate signal, the impact of the peak to average power ratio (PAPR) value on the PCE is low, while the impact of PAPR value on the PCE is high on the high symbol rate signal. In addition, the optimal combination of the symbol rate and the roll-off factor greatly improves the RF-DC PCE. Finally, the paper proposes the channel bandwidth as an index of the PCE.