Energy harvesting from far field RF signals

Abstract

In this article, an alternative source of energy harvesting is proposed. It is based on the concept of charge pump electronics circuit and radio frequency (RF) signal amplifier. The RF signals are acquired by the Dickson charge pump circuit, amplified, and converted into a desired DC signal. To ensure the maximum power extraction, the proposed energy harvester circuit includes multiple circuit level approach. The diode‐capacitor charge pump generated the step‐up stage in the system. The proposed idea is designed and implemented using a suitable hardware successfully. Initially, the designed circuit is simulated and tested using the MultiSim software and then hardware implemented to obtained the desired 1‐5 V DC signal. The presented circuit can be used in various applications such as electronic devices charging, power supply, energy harvesting, etc.

A Quad-band Low Power High Sensitive RF to DC Converter Circuit for RF Energy Harvesting Applications

“…Figure 1 shows a block diagram architecture detailing the RFEH system. It includes (i) a receiving antenna (RF source) [14], for capturing RF power by far-field technique [15], and (ii) a matching network [16], to transmit the maximum power from the RF source to the voltage-doubler rectifier. This matching network has lumped elements (Resistor (R), Inductor (L), and Capacitor (C)) or distributed elements and maybe a combination of both types, (iii) a rectifier (voltage doubler + rectification), to convert RF signal into DC and amplifies it by a zero-bias Schottky barrier diode in multistage topology, (iv) a DC pass filter circuit, consisting of a capacitor that effectively allows DC voltage while blocking higher-order harmonics of AC signal, and (v) a DC to DC step-up voltage converter [17], to boost up the small values of DC signal on the desired DC voltage for operating electronic devices.…”

Hybrid Precoder Using Stiefel Manifold Optimization for Mm-Wave Massive MIMO System

“…To prevent severe loss of propagation of the Mm-Wave channel, a hybrid precoder and combining transceivers are used for Mm-Wave massive MIMO systems [18][19][20][21]. The RF signal in analog precoding is used for energy-harvesting purposes [22][23][24][25][26]. The concept of cognitive radio can be used for the detection of primary users to improve the energy efficiency [27].…”