Efficient RF-to-DC energy harvesting for portable applications using TFET [articol]

Abstract

This paper proposes a method for RF-to – DC energy harvesting with high efficiency using TFET, sensitive low load resistance and increased dynamic range for low power devices. It measures peak power conversion for more power efficiency at low input power. The Proposed TFET rectifier takes the advantages of a forward bias technique to control the selective transistor to rectify the conduction. The tunnel devices are used for specific characteristics to increase the strength of weak input signals. In this paper it is proposed to have a design performance related with peak power conversion efficiency for power and amplitude, our design fabricated starts to operate -18dBm input. The operation of rectifier circuit with tested frequency GSM 900 band includes other frequency band such as 2.4 GHz with normal impedance matching. The efficiency of the measured peak power conversion for the implemented TFET is 87% and -19.2dBm (13μW) sensitivity and this is the best rectifier utilization for energy harvesting applications and Internet of things.