A Wide Input Range Dual-Path CMOS Rectifier for RF Energy Harvesting

Lü, Yan; Dai, Haojuan; Huang, Mo; Law, Man‐Kay; Sin, Sai-Weng; Seng-Pan, U; Martins, Rui P.

doi:10.1109/tcsii.2016.2554778

Cited by 126 publications

(53 citation statements)

References 13 publications

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“…Unfortunately, with typical RF to DC circuit architectures, it is difficult to optimize both parameters at the same time because the sensitivity and PCE characteristics tend to work against each other. Thus, dynamic systems require the ability to dynamically track the available power over a wide range using MPPT techniques [73][74][75][76][77][78]. These techniques share the common requirement of having to measure input power, which is not a straightforward task in an ultra-low-power environment, as this functionality inevitably consumes further power and contributes to further reducing the PCE of the system.…”

Section: System Designmentioning

confidence: 99%

Advanced Monitoring Systems Based on Battery-Less Asset Tracking Modules Energized through RF Wireless Power Transfer

Rosa

Dehollain

Livreri

2020

Sensors

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Asset tracking involving accurate location and transportation data is highly suited to wireless sensor networks (WSNs) featuring battery-less nodes that can be deployed in virtually any environment and require little or no maintenance. In response to the growing demand for advanced battery-less sensor tag solutions, this article presents a system for identifying and monitoring the speeds of assets in a WSN with battery-less tags that receive all their operating energy through radio frequency (RF) wireless power transfer (WPT) architecture, and a unique measurement approach to generate time-domain speed readouts. The assessment includes performance characteristics and key features of a system on chip (SoC) purposely designed to power a node through RF WPT. The result is an innovative solution for RF to DC conversion able to address the principal difficulties associated with maximum power conversion efficiency (PCE) with sensitivity and vice versa, a strategy, and a design optimization model to indicate the number of readers required for reliable asset identification and speed measurement. Model validation is performed through specific tests. Experimental results demonstrating the viability of the proposed advanced monitoring system are provided.

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Section: System Designmentioning

confidence: 99%

Advanced Monitoring Systems Based on Battery-Less Asset Tracking Modules Energized through RF Wireless Power Transfer

Rosa

Dehollain

Livreri

2020

Sensors

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“…PTX is the transmitted power, GTX is the gain of the transmitting antenna, PRX is the received power, GRX is the gain of the receiving antenna and R is the distance between transmitting and receiving antenna. Alternatively, the peak input voltage amplitude, VAnt received at the antenna can be calculated by [17],…”

Section: Rf Energy Harvesting (Rfeh)mentioning

confidence: 99%

“…Load (16) Iin is the input current into the charge-pump and is a factor of the pumping capacitor at the bottom plate parasitic capacitance. The power loss in a charge-pump and its peripheral circuit has to be kept minimal to attain high PCE and voltage conversion efficiency (VCE) performances which are expressed by (17) and (18), respectively.…”

Section: Capacitive-based Step-up Dc-dc Converter a Charge-pumpmentioning

confidence: 99%

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Low-Voltage Capacitive-Based Step-Up DC-DC Converters for RF Energy Harvesting System: A Review

et al. 2020

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Bulky off-chip inductors are predominantly adopted for inductive-based step-up DC-DC converter in RF energy harvesting (RFEH) systems, which impose a restriction in physical form factor for miniaturized device. This paper review and explores the capacitive-based step-up DC-DC converters (charge-pump) as voltage boosting element for low-voltage RFEH systems. An overview of RFEH is established and a comprehensive review of CMOS charge-pump is followed along with the complementary frequency generation circuit used as a clocking element. Key design considerations of charge-pump circuits are included here along with recommendations to circumvent its bottlenecks for future development in RFEH systems. INDEX TERMS-RF energy harvesting (RFEH), charge-pump, capacitive-based converters, DC-DC converter, CMOS.

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“…However, in both cases, the extra stages are always connected to the input and the extra capacitances reduce the input voltage amplitude, reducing the PCE [3], which is a problem especially when the available power is low. In [4], three power paths are connected in parallel: a reference path, a low-power path and a highpower path. The voltage at the output of the reference path is sensed to make the decision about using the high-power path or the low-power one.…”

Section: Introductionmentioning

confidence: 99%

An RF Energy Harvester with MPPT Operating Across a Wide Range of Available Input Power

Martins

Serdijn

2018

2018 IEEE International Symposium on Circuits and Systems (ISCAS)

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In this paper we present the design and simulation results of an RF energy harvesting circuit that operates across a wide range of available input power, from −27 dBm to 6 dBm. The system comprises an adaptive impedance matching network, a single-stage cross-connected differential rectifier, a start-up charge pump, an adaptive buck-boost converter and a Maximum Power Point Tracking (MPPT) circuit. The MPPT circuit controls the switching frequency of the buck-boost converter and configures the impedance matching network, optimizing the interfaces between the rectifier and antenna and between the rectifier and the storage capacitor, thereby guaranteeing that maximum power is being harvested. The system is designed in a standard 0.18 µm CMOS technology. The peak efficiency is 49.1% at an available input power of −18 dBm and signal frequency of 403.5 MHz.

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A Wide Input Range Dual-Path CMOS Rectifier for RF Energy Harvesting

Cited by 126 publications

References 13 publications

Advanced Monitoring Systems Based on Battery-Less Asset Tracking Modules Energized through RF Wireless Power Transfer

Advanced Monitoring Systems Based on Battery-Less Asset Tracking Modules Energized through RF Wireless Power Transfer

Low-Voltage Capacitive-Based Step-Up DC-DC Converters for RF Energy Harvesting System: A Review

An RF Energy Harvester with MPPT Operating Across a Wide Range of Available Input Power

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