Results 11 to 20 of about 40,193 (246)

Flexible Receiver Antenna Prepared Based on Conformal Printing and Its Wearable System [PDF]

open access: yesSensors
Microwave energy is ideal for wearable devices due to its stable wireless power transfer capabilities. However, rigid receiving antennas in conventional RF energy harvesters compromise wearability.
Qian Zhu   +4 more
doaj   +2 more sources

Implementation of Digital Beamforming System for Microwave Power Transfer With Real-Time Beam Scanning

open access: yesIEEE Access, 2023
In this study, we propose a digital beamforming system for microwave power transfer with a real-time beam-scanning algorithm for tracking a moving receiver. To perform scanning, each channel in the transmitter generates and converts a baseband signal for
Minjae Ahn   +4 more
doaj   +1 more source

Scavenging Microwave Wireless Power: A Unified Model, Rectenna Design Automation, and Cutting-Edge Techniques

open access: yesEngineering, 2023
While sufficient review articles exist on inductive short-range wireless power transfer (WPT), long-haul microwave WPT (MWPT) for solar power satellites, and ambient microwave wireless energy harvesting (MWEH) in urban areas, few studies focus on the ...
Si-Ping Gao   +3 more
doaj   +1 more source

Microwave Devices for Wearable Sensors and IoT

open access: yesSensors, 2023
The Internet of Things (IoT) paradigm is currently highly demanded in multiple scenarios and in particular plays an important role in solving medical-related challenges.
Alessandra Costanzo   +5 more
doaj   +1 more source

Microwave building as an application of wireless power transfer [PDF]

open access: yesWireless Power Transfer, 2014
We propose a wireless power distribution system (WPDS) operating at 2.45 GHz CW in buildings instead of wired power distribution in order to reduce the initial cost of the building. Required technologies for the WPDS are (a) low-cost and low-loss deck plate waveguide, (b) variable microwave power distributor for the waveguide, and (c) high-power (>100 ...
Naoki Shinohara   +6 more
openaire   +1 more source

A Study on Automatically Target-Chasing Microwave Power Transfer Systems in Multipath Environments

open access: yesEnergies, 2022
In this paper, we propose novel retrodirective systems to improve the efficiency and safety of microwave power transmission (MPT) systems in multipath environments.
Naoki Shinohara, Taichi Sasaki
doaj   +1 more source

Large microwave generation from d.c. driven magnetic vortex oscillators in magnetic tunnel junctions [PDF]

open access: yes, 1999
Spin polarized current can excite the magnetization of a ferromagnet through the transfer of spin angular momentum to the local spin system. This pure spin-related transport phenomena leads to alluring possibilities for the achievement of a nanometer ...
Dussaux, A.   +12 more
core   +5 more sources

Implementation of Resonant Electric Based Metamaterials for Electromagnetic Wave Manipulation at Microwave Frequencies

open access: yesSensors, 2021
In this paper, we present the application of a resonant electric based metamaterial element and its two-dimensional metasurface implementation for a variety of emerging wireless applications.
Stylianos D. Assimonis   +7 more
doaj   +1 more source

Generation and regulation of two-dimensional autofocusing Airy beams based on holographic metasurfaces

open access: yesJournal of Information and Intelligence, 2023
This paper proposes a new method to generate a two-dimensional (2D) Airy beam and Airy autofocusing beam by using the scalar holographic metasurface with amplitude-phase modulation in the microwave band.
Song Zhang   +6 more
doaj   +1 more source

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