Reconfigurable Nonlinear Circuit for Wireless Power Harvesting and Backscattering

Abstract

Scarcity of accessible energy compels battery-less micro-energy wireless devices to embed energy harvesting, backscattering modulation, and even harmonic operation to avoid self-jamming. However, since those Internet of Things (IoT) devices are meant to be ubiquitous, keeping a low level of complexity of nonlinear operation, and also a small footprint circuit is becoming an ever-challenging task. This paper presents a hybrid IoT frontend architecture capable of rectification, second-harmonic generation and modulation using a single diode controlled by harmonic terminations. The proposed solutions of re-configurability are validated by measurements.