Bandwidth Analysis of RF-DC Converters Under Multisine Excitation

Pan, Ning; Belo, Daniel; Rajabi, Mohammad; Schreurs, Dominique; Carvalho, Nuno Borges; Pollin, Sofie

doi:10.1109/tmtt.2017.2757473

Cited by 45 publications

(34 citation statements)

References 15 publications

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“…As the first voltage doubler stage following the matching network, the clamper is used to enhance the input voltage to the rectifying diode (D 2 ), as can be seen in Figure 2a. Clamping circuits are mostly used to implement the voltage multiplier [8]. For a time-varying sinusoidal input signal, the clamping circuit uses the peak of the negative voltage of the input signal to produce a positive shift in the signal during its positive part, as explained below.…”

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

“…s , and n show the thermal voltage, the saturation current, and the ideality factor, respectively. The voltage enhancement factor is defined as the ratio of input voltage to rectifying diode voltage V d with peak input voltage to clamper circuit V i [8]. For the ideal continuous wave excited voltage doubler, the voltage enhancement factor is two, if the clamper moves perfectly the input signal to the DC offset, equal to the peak of V i during the negative input cycle.…”

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

“…Equation 7is a nonlinear form of an ODE, and a closed form solution for the general case is not available. Though, its numerical solution is possible using the ODE solver [8], the calculated DC output voltage is…”

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

“…where t is the steady state charging starting time, and T ¼ nτ is the total number of n periods of the output signal [8].…”

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

“…Traditionally, the efficiency of any rectifying circuit is controlled and improved by optimizing the circuit design [5,6]. Additionally, it can be further improved by using a high peak-to-average power ratio (PAPR) multi-sine signals that have demonstrated improved efficiency performance compared to the conventional sinusoidal signals [7,8]. Usually, the available ambient RF power is very low and therefore the harvested power is not sufficient to support any immediate application, although, it can be utilized to directly control the external supply dynamically [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

Quddious¹,

Antoniades²,

Vryonides³

et al. 2020

Recent Wireless Power Transfer Technologies

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Wireless Power Transfer (WPT) is promoted as a key enabling technology (KET) for the widespread use of batteryless Internet of Things (IoT) devices and for 5G wireless networks. RF-to-DC rectifiers are essential components for the exploitation of either ambient RF power or wireless transmitted power from a dedicated source. There are several alternative rectifier topologies which can be selected depending on the desired wireless charging scenario and may include one or more diodes. For full rectification, a minimum of two diodes are needed. The current chapter discusses various implementations of voltage-doubler designs, which revolve around the basic topology of two diodes and two capacitors. Schottky diodes are usually used, in combination with lumped capacitors. Off-the-shelf diodes include both separate diodes and integrated voltage-doubler topologies in a single package. Rectifiers are inherently narrowband, non-linear devices, and the RF-to-DC efficiency, which is usually the figure of merit, depends non-linearly on both the termination load and the received RF power. The bandwidth of the rectifier depends on the preceding matching network.

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Section: Voltage Doubler Operation Principlementioning

confidence: 99%

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

“…where t is the steady state charging starting time, and T ¼ nτ is the total number of n periods of the output signal [8].…”

Section: Voltage Doubler Operation Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

Quddious¹,

Antoniades²,

Vryonides³

et al. 2020

Recent Wireless Power Transfer Technologies

View full text Add to dashboard Cite

show abstract

Experimental platform for waveform optimization in passive UHF RFID systems

Merakeb

Ezzeddine

Huillery

et al. 2020

Int J RF Microw Comput Aided Eng

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The article presents an experimental platform, so called “RFID Waveformer,” dedicated to the study of waveform optimization in the radio frequency identification (RFID) context. It is a flexible solution that enables waveform design and their energetic performance evaluation in a ultra high frequency (UHF) RFID link following the ISO‐18000 GEN2 standard protocol. It consists of a reader emulated by a LabVIEW interface controlling radiofrequency laboratory instruments, which perform real time tag response detection. Its interconnection with MATLAB routines enables the design and the evaluation of arbitrarily shaped RFID waveforms. In this article, for illustration, three waveforms are tested with RFID Waveformer in a complex propagation environment: pulsed wave (PW) and time reversal (TR) modes compared to the traditional continuous wave (CW) mode. Experimental results show that both PW and TR modes improve the energetic efficiency of the forward link and so the RFID read range compared to CW mode. Furthermore, TR presents the optimal efficiency in complex propagation medium. The RFID Waveformer enables tag response detection in the three modes offering ease of use and repeatability of measurements. The RFID Waveformer being not limited to the scenario considered in this article, it is a versatile solution extendable to other contexts.

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High efficiency dual‐band rectifiers with wide input power range for wireless power transfer

Liu,

Xie,

Wang

2024

Micro & Optical Tech Letters

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A watt‐scale dual‐band rectifier with excellent efficiency and a wide input power range is proposed in this letter. The rectifier is composed of two stages. In the first stage, a novel impedance‐matching network with four transmission lines (TLINs) is proposed, which can independently change the input impedance of each band over a large input power range. This approach by deriving closed‐form analytical equations to obtain an exact solution. To test the parameters of the first part of the TLINs in validation and to guarantee excellent efficiency, two TLINs are used in the second stage to control the harmonics. At 0 dBm, the power conversion efficiency (PCE) is 51.2% and 56.7% at 2.4 and 5.8 GHz, respectively, at a load of 1.2 kΩ. At 2.4 GHz, PCE reaches a peak of 68% at 13 dBm. At 5.8 GHz, PCE enhances up to 89% at 17 dBm. At 2.4 and 5.8 GHz, the PCE exceeds 70% of the peak over a wide input power range of −3 to 18 and 1.5–18 dBm, respectively. For verification, the proposed rectifier is fabricated. The simulation results are consistent with the measurements. The proposed rectifier performs well in terms of compactness and rectification effectiveness. It provides a solution for powering low‐power devices.

show abstract

Bandwidth Analysis of RF-DC Converters Under Multisine Excitation

Cited by 45 publications

References 15 publications

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

Experimental platform for waveform optimization in passive UHF RFID systems

High efficiency dual‐band rectifiers with wide input power range for wireless power transfer

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