A reconfigurable and instantaneous triple RF bands energy harvester using internal control loop

作者：Saheb Zina^*; El Masry Ezz

来源：Analog Integrated Circuits and Signal Processing, 2018, 96(1): 79-86.

DOI：10.1007/s10470-018-1188-3

• RF-DC
• RF harvester
• Triple RF bands
• Reconfigurable
• CMOS
• Rectifiers

This paper presents an autonomous energy harvester able to perform a high radio frequency (RF) power tracking to achieve a DC renewable power source. The proposed simultaneous triple RF band energy harvesting system has the potential of being deployed along with remote sensor nodes to enhance their operational life-times. Two multi-stages rectifiers harvest the RF energy from three bands: 900 MHz, 1.2 and 2.4 GHz are proposed. A control loop is implemented to reconfigure the operating frequency of the rectifier based on the amount of available input power. The harvester is designed using TSMC 65-nm CMOS technology and tunable matching network to vary the input impedance of the main rectifier between 900 MHz and 1.2 GHz and the second rectifier harvests from 2.4 GHz. The results show a peak efficiency of 57, 43 and 33% at 2.4 GHz, 900 MHz and 1.2 GHz respectively.

• 出版日期2018-7