A Wideband Efficient Rectifier Design for SWIPT

Simultaneous wireless information and power transfer (SWIPT) requires rectifiers that achieve a good efficiency for low input power and large signal bandwidths. This paper presents an efficient SWIPT rectifier for wideband multi-sine signals based on a conventional Class F rectifier design allowing low input power level and wide input signal bandwidth. The RF to DC efficiency is more than 35% for a wide input power range from -15 to +5 dBm and frequency from 2.4 to 2.5 GHz. For this input signal range, a DC output voltage of 3.7 V is measured. The maximal efficiency of 54.5% is measured at +3 dBm input power and peak DC output voltage of 4.1 V is measured at +10 dBm input power, respectively. The measurement are done for a signal bandwidth of 30 MHz, showing that the proposed rectifier can enable efficient SWIPT using multi-sine signals in the 2.4 GHz ISM band.

[1]  Sofie Pollin,et al.  Bandwidth Analysis of RF-DC Converters Under Multisine Excitation , 2018, IEEE Transactions on Microwave Theory and Techniques.

[2]  A. Collado,et al.  Optimal Waveforms for Efficient Wireless Power Transmission , 2014, IEEE Microwave and Wireless Components Letters.

[3]  L. Roselli,et al.  Design of a ultra-compact low-power rectenna in paper substrate for energy harvesting in the Wi-Fi band , 2016, 2016 IEEE Wireless Power Transfer Conference (WPTC).

[4]  Sofie Pollin,et al.  Receiving ASK-OFDM in Low Power SWIPT Nodes without Local Oscillators , 2019, 2019 IEEE Wireless Power Transfer Conference (WPTC).

[5]  A. Georgiadis,et al.  Optimum behavior: Wireless power transmission system design through behavioral models and efficient synthesis techniques , 2013, IEEE Microwave Magazine.

[6]  Nadir Hakem,et al.  A Miniature Rectifier Design for Radio Frequency Energy Harvesting Applied at 2.45 GHz , 2018, 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe).

[7]  Xinen Zhu,et al.  Theoretical Analysis of RF-DC Conversion Efficiency for Class-F Rectifiers , 2014, IEEE Transactions on Microwave Theory and Techniques.

[8]  Feng Wang,et al.  Robust Transceiver Optimization for Power-Splitting Based Downlink MISO SWIPT Systems , 2015, IEEE Signal Processing Letters.

[9]  Yan Zhao,et al.  High frequency rectifier for RF energy harvesting systems , 2015, 2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE).

[10]  Mohamed Latrach,et al.  Low cost and efficient rectifier design for microwave energy harvesting , 2013, 2013 Loughborough Antennas & Propagation Conference (LAPC).