Wirelessly-Powered Wireless Sensor Platform

Paing,; Morroni,; Dolgov,; Shin, Jae Hoon; Brannan,; Zane,; Popović, Vladimir

doi:10.1109/ecwt.2007.4403991

Cited by 40 publications

(18 citation statements)

References 11 publications

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“…Rectenna power management efficiency required to produce given fixed output voltage 85-90% dependent on rectenna number and power [7] The third column shows best reported results for efficiencies, which are not at consistent frequencies, power levels, etc. Thus, these numbers show an upper limit on the overall efficiency of WPT of around 45%.…”

Section: = ηmentioning

confidence: 99%

Lunar Wireless Power Transfer Feasibility Study

Freid¹,

Popović²,

Beckett³

et al. 2008

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-This study examines the feasibility of a multi-kilowatt wireless radio frequency (RF) power system to transfer power between lunar base facilities. Initial analyses, show that wireless power transfer (WPT) systems can be more efficient and less expensive than traditional wired approaches for certain lunar and terrestrial applications. The study includes evaluations of the fundamental limitations of lunar WPT systems, the interrelationships of possible operational parameters, and a baseline design approach for a notionial system that could be used in the near future to power remote facilities at a lunar base. Our notional system includes state-of-the-art photovoltaics (PVs), high-efficiency microwave transmitters, low-mass large-aperture high-power transmit antennas, high-efficiency large-area rectenna receiving arrays, and reconfigurable DC combining circuitry. I. SummaryNASA has embarked on a bold mission to return to the moon and establish a permanent presence. A moon base will require a vast amount of resources that can be extracted from various locations. A key question is how to deliver power to facilities (load stations) distributed on the lunar service, possibly in places where there is little sunlight. Initially, the load stations are planned to be 0.5 to 2km away from mountain-tops where photovoltaic generation stations can be placed. Each site is expected to require 10kW of power to operate.Traditional power transfer methods for this type of off-site extraction mission would utilize cables, estimated to have a mass of about 7,500kg for five load stations. These transmission lines must traverse large distances, are sensitive to temperature, will be expensive to transport from Earth to the moon, may be a safety hazard for lunar operations, are susceptible to solar flare induced transient effects, have large diameters due to high voltages and power levels, have a large mass, and are difficult to manage due to residual cable stresses.In addition, once the cables are set up, they would be difficult to move in the event that a different facility needs to be powered. Since multi-kilowatt power requirements are envisioned for these work sites, new methods of power transfer must be explored.For comparison purposes, a top-level system design for a traditional transmission line approach was developed. A transmission voltage of 480 V was selected based upon minimum cable sizes

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Section: = ηmentioning

confidence: 99%

Lunar Wireless Power Transfer Feasibility Study

Freid¹,

Popović²,

Beckett³

et al. 2008

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“…The frequency ranges and power at different frequency spectrum from 10kHz to 30MHz is explained in more detail in [5]. The output power of RF devices is limited due to safety and health concern offered to EM radiation by regulations such as Federal Communications Commission (FCC), USA [6].…”

Section: Introductionmentioning

confidence: 99%

“…Rectenna is known as rectifying antenna [5]. It is a type of antenna that rectifies the incoming electromagnetic waves into DC current.…”

Section: Introductionmentioning

confidence: 99%

Design of Antennas for a Rectenna System of Wireless Power Transfer in the LTE/WLAN Frequency Band

Malisuwan¹,

Tiamnara²,

Suriyakrai³

2017

JOCET

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Abstract-The Wireless Power Transfer (WPT) system has enabled numerous applications in clean energy applications since their major goal is to recycle the ambient microwave energy. It is enough to drive low power consumption devices. In such system, microstrip antennas are utilized as the main component for collecting the electromagnetic energy. Antenna design is important in the proposed rectenna. The antenna absorbs the incident microwave power, and the rectifier converts it into a useful electric power. In this paper, we focus on the design of two microstrip antennas with resonant frequency of 1.88GHz and 2.45GHz to utilize in the WPT system for LTE/WLAN low power devices. The maximum return loss for each of microstrip antennas was simulated by MATLAB programming. The conversion efficiency of the fabricated antennas was measured as 38% and 35%. The results of this research can be applied in other mobile technologies.Index Terms-WPT, rectenna, microstrip antenna, LTE/WLAN, low power.

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“…As the harvesting systems are designed for specific operating conditions deviation from them may cause a dramatic drop in the harvester efficiency. Several advances aiming at improving the efficiency of energy harvesters have been proposed in the literature [3]- [9] focusing both on the antenna and the rectifier circuits.…”

Section: Introductionmentioning

confidence: 99%

Rectenna Design and Signal Optimization for Electromagnetic Energy Harvesting and Wireless Power Transfer

Georgiadis

Collado

Niotaki

2015

IEICE Trans. Electron.

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SUMMARYThis work addresses two key topics in the field of energy harvesting and wireless power transfer. The first is the optimum signal design for improved RF-DC conversion efficiency in rectifier circuits by using time varying envelope signals. The second is the design of rectifiers that present reduced sensitivity to input power and output load variations by introducing resistance compression network (RCN) structures.

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Wirelessly-Powered Wireless Sensor Platform

Cited by 40 publications

References 11 publications

Lunar Wireless Power Transfer Feasibility Study

Lunar Wireless Power Transfer Feasibility Study

Design of Antennas for a Rectenna System of Wireless Power Transfer in the LTE/WLAN Frequency Band

Rectenna Design and Signal Optimization for Electromagnetic Energy Harvesting and Wireless Power Transfer

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