Joint impact of input power, papr, and load resistance on the receiver efficiency of multisine waveforms in RF energy harvesting
Ayir, Nachiket; Riihonen, Taneli (2021-06-01)
Ayir, Nachiket
Riihonen, Taneli
IEEE
01.06.2021
2021 IEEE Wireless Power Transfer Conference, WPTC 2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202111048155
https://urn.fi/URN:NBN:fi:tuni-202111048155
Kuvaus
Peer reviewed
Tiivistelmä
The receiver efficiency in radio-frequency (RF) energy harvesting (EH) is affected by numerous parameters such as the average RF input power and peak-to-average power ratio (PAPR) of the waveform, the EH circuit components, and the load. In this paper, we experimentally study the dependence of RF-to-DC efficiency on these parameters. We present a test-bed, comprising a signal generator and an off-the-shelf energy harvesting receiver with a diode-based rectifier, for evaluating the RF-to-DC efficiency for varying input RF power, load resistance and a number of co-phased baseband multisine waveforms (viz. PAPR). The experimental results suggest that the RF-to-DC efficiency of multisine waveforms in RF EH is significantly affected by the average input RF power and the load resistance. The high-PAPR multisine waveforms are preferable for RF EH only for a certain range of average input RF power and load resistance. In particular, for the considered rectifier, a single-sinusoid waveform yields the highest RF-to-DC efficiency for low-resistance and high average input RF power region, while high-PAPR baseband multisines are optimal for high-resistance and low average input RF power region.
Kokoelmat
- TUNICRIS-julkaisut [17001]