A Reconfigurable Rectifier With Optimal Loading Point Determination for RF Energy Harvesting From −22 dBm to −2 dBm

Zeng, Zizhen; Estrada-López, Johan J.; Abouzied, Mohamed; Sánchez-Sinencio, E.

doi:10.1109/tcsii.2019.2899338

Cited by 37 publications

(14 citation statements)

References 18 publications

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“…As it can be seen, the efficiency rapidly drops below 5% due to the frequency displacement the parasitics cause. After including them in our circuit model, the rectifier efficiency rose to over 30% in both circuits, which is approximately twice the values (15%–20%) typically shown in the literature [10,12,13]. The nonlinearity of both circuits is appreciated in Figure 16.…”

Section: Parasitic Elementsmentioning

confidence: 58%

“…Moreover, the nonlinearity associated with the diodes represents an added difficulty [12]: the performance of the entire system is dependent, among other parameters, on the input power, which unfortunately hampers the design of the matching circuit. Because of these combined facts, the efficiency of different topologies of passive circuitries (not externally fed) is normally under 15% [10,12,13,14]. On the other hand, there are some recent studies that have applied active circuits (externally fed) [14,15] in order to lower the threshold voltage of diodes/transistors.…”

Section: Introductionmentioning

confidence: 99%

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Parasitics Impact on the Performance of Rectifier Circuits in Sensing RF Energy Harvesting

Alex‐Amor

Moreno‐Núñez

Fernández-González

et al. 2019

Sensors

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This work presents some accurate guidelines for the design of rectifier circuits in radiofrequency (RF) energy harvesting. New light is shed on the design process, paying special attention to the nonlinearity of the circuits and the modeling of the parasitic elements. Two different configurations are tested: a Cockcroft–Walton multiplier and a half-wave rectifier. Several combinations of diodes, capacitors, inductors and loads were studied. Furthermore, the parasitics that are part of the circuits were modeled. Thus, the most harmful parasitics were identified and studied in depth in order to improve the conversion efficiency and enhance the performance of self-sustaining sensing systems. The experimental results show that the parasitics associated with the diode package and the via holes in the PCB (Printed Circuit Board) can leave the circuits inoperative. As an example, the rectifier efficiency is below 5% without considering the influence of the parasitics. On the other hand, it increases to over 30% in both circuits after considering them, twice the value of typical passive rectifiers.

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Section: Parasitic Elementsmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Parasitics Impact on the Performance of Rectifier Circuits in Sensing RF Energy Harvesting

Alex‐Amor

Moreno‐Núñez

Fernández-González

et al. 2019

Sensors

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show abstract

“…In the design and optimization process, SEMCAD X, a finite-difference time-domain full-wave solver [20], was used for modeling and simulation, where lumped element equivalent circuit models were used for Schottky diodes [21]. In addition, due to the nonlinear effects in the rectifier [22,23], the design process must involve the dependence of the rectifier circuit on input power. To this end, we have performed impedance matching using an equivalent circuit model in ADS at the target input power and frequency of 0 dBm and 2.45GHz, respectively.…”

Section: Digital Object Identifiermentioning

confidence: 99%

Rectifying Metasurface With High Efficiency at Low Power for 2.45 GHz Band

Lee

Hong

2020

Antennas Wirel. Propag. Lett.

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This letter presents a novel rectifying metasurface with high efficiency at low power applicable to wireless power transfer and energy harvesting. The proposed rectifying metasurface is a two-sided structure consisting of modified electric inductive-capacitive unit cells on one side and a rectifying circuitry on the other, designed to resonate and rectify at 2.45 GHz. Each unit cell is directly connected to a voltage doubler rectifier, allowing the incident microwaves to be directly rectified upon reception. The impedance characteristics and rectification performance of the proposed rectifying metasurface are tested via numerical simulation and measurement, respectively. The measured results demonstrate an overall conversion efficiency (electromagnetic power absorption + rectification) of 76.8% at 0.4 dBm incident power.

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“…Figure 1 shows such an autonomous WSN supplied by the energy harvesting interface. The ambient energy sources can be extracted with the energy transducer such as thermoelectric generators (TEG) Chen et al, 2019b;Coustans et al (2019), photovoltaic (PV) cells Shim et al (2019); Jeong et al (2020), triboelectric nanogenerators (TENG) Kara et al (2021); Niu et al (2015), biofuel (BF) cells Talkhooncheh et al (2021); Katic et al (2018), piezoelectric harvesters (PEH) Chen et al (2020); Angelov and Nielsen-Lönn, 2020 and RF energy harvester (RFEH) Zeng et al, 2020;Martins and Serdijn, 2021, etc. However, the energy available from a single energy source is normally weak and stochastic, which is severely dominated by the changing environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Review of the Multi-Input Single-Inductor Multi-Output Energy Harvesting Interface Applied in Wearable Electronics

Gao

Wang

et al. 2021

Front.Electron.

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Along with the industrialization and popularization of the wearable electronics, an increasing number of the wireless sensor nodes (WSNs) are deployed. Nevertheless, the conventional battery-based power supply system has no longer satisfied the requirement of large-scale WSNs in terms of battery life, which emerges the energy harvesting (EH) technique. In order to combine various of energy sources and drive multi-loads, the multi-input single-inductor multi-output (MISIMO) EH interface applied to wearable electronics is spotlighted. In this mini-review article, the solutions for improving power conversion efficiency (PCE) and output quality in MISIMO EH interface are summarized. Furthermore, the future trends of MISIMO EH interface are also presented.

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A Reconfigurable Rectifier With Optimal Loading Point Determination for RF Energy Harvesting From −22 dBm to −2 dBm

Cited by 37 publications

References 18 publications

Parasitics Impact on the Performance of Rectifier Circuits in Sensing RF Energy Harvesting

Parasitics Impact on the Performance of Rectifier Circuits in Sensing RF Energy Harvesting

Rectifying Metasurface With High Efficiency at Low Power for 2.45 GHz Band

Review of the Multi-Input Single-Inductor Multi-Output Energy Harvesting Interface Applied in Wearable Electronics

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