Transient Input Impedance Modeling of Rectifiers for RF Energy Harvesting Applications

Differential-drive cross-coupled (DDCC) rectifier is an important type of rectifier for radio-frequency energy harvesting. In this study, the analytical model of a DDCC rectifier is derived. With this model, optimisation procedures for most powerefficient rectifiers are derived. The model is verified extensively with Spectre simulations using the more complicated BSIM transistor model. Simulation results are further verified with measurements from reported rectifier designs. This study shows that DDCC rectifiers with the efficiency of 80.7% could ideally be achieved with −30 dBm sensitivity following the optimisation procedures introduced in this work.

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“…Substituting (22) and 23into 17, we can write the transistor reverse drain-source current in [t 1 , 0.5 T] as…”

Section: Current Model For Weak Inputmentioning

confidence: 99%

Modelling and optimisation of high‐efficiency differential‐drive complementary metal–oxide–semiconductor rectifier for ultra‐high‐frequency radio‐frequency energy harvesters

Liang

Yuan

2019

IET Power Electronics

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“…Another advantage of the energy harvesting process with Dickson circuits is that it creates a staged‐structure by adding the same rectifier circuit one after the other. Thus, the output voltage on load resistance increases proportionally to the number of layers …”

Section: Introductionmentioning

confidence: 99%

“…Thus, the output voltage on load resistance increases proportionally to the number of layers. [13][14][15][16] In this study, energy harvesting application was performed using the Dickson rectifier circuit. As single-stage and threestage, two circuits were designed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of rectifier stage number and load resistance in an RF energy harvesting circuit

Kasar

Gözel

Kahriman

2019

Micro & Optical Tech Letters

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In this study, a single‐stage and three‐stage Dickson rectifier circuits that would be able to perform RF energy harvesting were proposed. Operating frequency was selected as 1 GHz. The highest efficiency value was obtained at 7 dBm input power. The load resistance values for the input power were parametrically analyzed and the power conversion efficiency and output voltage were calculated. In the cases where the best performance was obtained, while a maximum power conversion efficiency of 70.5% was obtained in the single‐stage Dickson circuit, maximum 77% efficiency was obtained in the three‐stage circuit. In addition, in the cases where the highest efficiency was observed, the load resistance values were calculated as 5590 and 14 610 Ω at the single stage and three stages, respectively. The load resistance value used to obtain higher efficiency values in the three‐stage circuit is increasing. Moreover, it was observed that as the number of stages increased, the output voltage also increased linearly. The maximum output voltage which was 1.8 V in the single‐stage was measured as ~5.16 V in three‐stages.

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“…The ability to wirelessly charge an electronic device has become a necessity especially when such devices are deployed in hard to reach areas or at distant locations as in the case of wireless sensor networks. One possible solution is to rely on radio frequency (RF) energy harvesting by making use of ambient or dedicated RF waves to provide energy to low-power electronic devices [1][2][3]. For either case, a rectenna that is a combination of an antenna and a rectifier is required.…”

Section: Introductionmentioning

confidence: 99%

Enhanced radio frequency rectifier with a power splitting/combining topology for wireless energy transfer and harvesting

Abdallah

Costantine

Ramadan

et al. 2019

IET Microwaves, Antennas & Propagation

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Power splitting of the input radio frequency (RF) signal is used to improve the efficient power range of a RF rectifier. Direct current (dc) power at the output of every rectifying branch is then combined over a resistive load and thus resulting in a single dc output. The enhancement in efficient power range, over which the power conversion efficiency (PCE) remains ≥ 50%, is determined to be 2.8 dB. The article starts by a theoretical analysis that addresses the negative effects of the diode's breakdown voltage, formulates an equation that predicts the maximum output dc voltage at saturation, and introduces a method that can improve the PCE of a typical shunt‐type diode rectifier at low power levels. As a result, a rectifying system is designed and tested as a proof of concept. The proposed circuit, with the enhanced power range, is designed to operate within the power span from −10 dBm up until 10 dBm. Such system is suitable for operation in RF wireless energy transfer and energy harvesting applications.

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Transient Input Impedance Modeling of Rectifiers for RF Energy Harvesting Applications

Cited by 35 publications

References 12 publications

Modelling and optimisation of high‐efficiency differential‐drive complementary metal–oxide–semiconductor rectifier for ultra‐high‐frequency radio‐frequency energy harvesters

Modelling and optimisation of high‐efficiency differential‐drive complementary metal–oxide–semiconductor rectifier for ultra‐high‐frequency radio‐frequency energy harvesters

Analysis of rectifier stage number and load resistance in an RF energy harvesting circuit

Enhanced radio frequency rectifier with a power splitting/combining topology for wireless energy transfer and harvesting

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