Abstract

A new dual-band rectifier circuit for ambient radio frequency (RF) energy harvesting is proposed. Due to the existence of Schottky diode as a non-linear device in the rectifier circuit, the input impedance and echo characteristics will change dramatically with the load size and input power, so it has been challenging to design a multi-band high efficiency rectifier with high dynamic range. Therefore, an improved impedance compression technique is proposed to adjust the impedance range of nonlinear diode with high dynamic range to a smaller range.

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