Results 31 to 40 of about 1,055 (144)

Overview of nanoantennas for solar rectennas

open access: yes, 2013
\ua9 2013 Springer Science+Business Media New York. All rights are reserved.This chapter highlights the history of optical and infrared antennas for solar rectennas and mentions the important contributions made in this field.
Tsimenidis CC, Sabaawi AMA, Sharif BS
core   +4 more sources

Scalable, High-Sensitivity X-Band Rectenna Array for the Demonstration of Space-to-Earth Power Beaming

open access: yesIEEE Access, 2021
This paper presents a large, modular X-band rectenna array developed for the planned demonstration of a space-to-Earth power beaming link operating at 10 GHz. The array is composed of 16 tiles assembled into a panel greater than 1 m x 1 m in size.
Brian B. Tierney   +3 more
doaj   +1 more source

Wirelessly Powered Light and Temperature Sensors Facilitated by Electrically Small Omnidirectional and Huygens Dipole Antennas

open access: yesSensors, 2019
Wirelessly powered, very compact sensors are highly attractive for many emerging Internet-of-things (IoT) applications; they eliminate the need for on-board short-life and bulky batteries.
Wei Lin, Richard W. Ziolkowski
doaj   +1 more source

Electron cyclotron converters of microwaves in wireless power transmission systems

open access: yesRUDN Journal of Engineering Research, 2020
A proposal to use special electron cyclotron devices as effective converters of electromagnetic waves into direct current in modern microwave systems for wireless transmission of electrical energy to the Earth via a microwave channel from solar space ...
Yury A. Pirogov   +2 more
doaj   +1 more source

Design of a rectenna system for GSM-900 band using novel broadside 2 × 1 array antenna

open access: yesThe Journal of Engineering, 2017
In this study, a rectenna operating at the GSM-900 frequency band has been fabricated and tested. This rectenna composed of a 2 × 1 T-shaped monopole array antenna and an energy processing circuit.
Manish Singh   +2 more
doaj   +1 more source

The Unified Synthesis of Flat-Beam Multi-Directional Metasurface Rectennas: A Review for Pervasive Wireless Power Beyond Directional Limits

open access: yesIEEE Access
Battery-free Internet of Things (IoT) systems require wireless power transfer (WPT) receivers that are robust to variations in orientation and polarization. Conventional rectennas, however, exhibit strong directional sensitivity and limited adaptability,
Athul Parameswaran   +5 more
doaj   +1 more source

Millimeter-Wave Power Harvesting: A Review

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
The broad spectrum available at millimeter-wave (mmWave) bands has attracted significant interest for a breadth of applications, with 5G communications being the main commercial drive for mmWave networks.
Mahmoud Wagih   +2 more
doaj   +1 more source

A Compact Resistively Loaded Metamaterial Absorber for 2.4 GHz RF Energy Harvesting With Impedance‐Matched Rectifier Analysis

open access: yesAdvanced Electronic Materials, EarlyView.
A compact resistively loaded metamaterial absorber captures RF energy at 2.4 GHz and directs most of the accepted power to modeled loads. The resonant response is confirmed experimentally for the fabricated absorber, while an impedance‐matched rectifier is evaluated through simulation. The stage‐wise results distinguish absorber, rectifier, and cascade
Md. Murad Kabir Nipun, Md. Jahedul Islam
wiley   +1 more source

Electrically Small Huygens Dipole Rectennas for Wireless Power Transfer Applications [PDF]

open access: yes, 2022
A series of electrically small Huygens dipole rectennas are reviewed in this paper. Their design concepts rely on the integration of electrically small Huygens dipole antennas with a highly efficient AC-to-DC rectifier circuit.
Ziolkowski, RW, Lin, W
core   +1 more source

Feasibility of Ambient RF Energy Harvesting for Self-Sustainable M2M Communications Using Transparent and Flexible Graphene Antennas

open access: yesIEEE Access, 2016
Lifetime is a critical parameter in ubiquitous, battery-operated sensors for machine-to-machine (M2M) communication systems, an emerging part of the future Internet of Things. In this paper, the performance of radio frequency (RF) to DC energy converters
Michael A. Andersson   +5 more
doaj   +1 more source

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