Results 41 to 50 of about 1,055 (144)

Recent Advances in Microstrip Patch Antenna Optimization: Methods, Design Targets, and Emerging Trends

open access: yesApplied Research, Volume 5, Issue 5, October 2026.
This systematic review synthesizes recent advances in Microstrip patch antennas (MPAs) optimization research, highlighting key design targets, optimization methodologies, performance trade‐offs, and application trends. The results demonstrate that MPA optimization is an inherently multivariable problem, with trade‐offs among antenna size, impedance ...
Madihah Zakaria   +6 more
wiley   +1 more source

Enhanced coupling efficiency in geometric terahertz rectennas based on scalable CVD graphene

open access: yesDiscover Electronics
Ubiquitous electromagnetic radiation from wireless communication networks is an untapped energy source for low-power devices. Passive rectennas (a combination of a rectifier and an antenna) can harvest this energy to power devices and systems, such as ...
Andreas Hemmetter   +14 more
doaj   +1 more source

Large-Scale Sequentially-Fed Array Antenna Radiating Flat-Top Beam for Microwave Power Transmission to Drones

open access: yesIEEE Journal of Microwaves, 2022
Power beaming is one of the core technologies for microwave power transmission (MPT) systems. Effective plane-to-plane power beaming requires not only high point-to-point efficiency but also appropriately-shaped beam to extract the best performance of ...
Nobuyuki Takabayashi   +4 more
doaj   +1 more source

Fiber‐reinforced Liquid Metal Composites With Automated Circuit Fabrication for Structurally‐Integrated Power Transfer

open access: yesAdvanced Functional Materials, Volume 36, Issue 74, 14 September 2026.
Fiber‐reinforced liquid metal composites (FibRe LMCs) are introduced that combine GPa‐scale structural performance with digitally programmable electrical conductivity. Through automated CNC activation, conductive pathways and wireless power transfer circuits are fabricated directly within load‐bearing composites, enabling structurally integrated ...
John Joyce   +5 more
wiley   +1 more source

Towards an optimal MIIM diode for rectennas at 10.6 μm

open access: yesResults in Materials, 2021
We investigate, for the first time, optimization of the responsivity of metal-insulator-insulator-metal (MIIM) diodes by carefully considering materials' properties.
A.Y. Elsharabasy, M.H. Bakr, M.J. Deen
doaj   +1 more source

The Ionosphere as an Operational Constraint on Space‐Based Solar Power

open access: yesSpace Weather, Volume 24, Issue 9, September 2026.
Abstract This commentary argues that there is an urgent need to develop a scientific consensus on how microwave beams from space‐based solar power (SBSP) satellites will interact with plasma in the ionosphere. Whilst the SBSP concept dates back to the 1970s, it is now gaining traction around the world as a technology that could contribute baseline ...
Mike Hapgood
wiley   +1 more source

On the Trade-Offs of Statistical CSI and CSI-Free Energy Beamforming for Batteryless MTC

open access: yesIEEE Open Journal of the Communications Society
Wireless energy transfer (WET) via radio frequency is key to sustaining batteryless Internet-of-Things (IoT) devices in machine-type communication (MTC) systems.
Ricardo Souza Senandes   +5 more
doaj   +1 more source

Analysis of Variance of the Diode Parameters in Multiband Rectifiers for RF Energy Harvesting [PDF]

open access: yesRadioengineering, 2021
The aim of this work was the characterization of the diode parameters from the single diode and voltage doubler rectifiers employed in multiband rectennas.
A. Contreras, M. Urdaneta
doaj  

Beyond Photoreceptors: Bio‐Inspired Neuromorphic Vision System Mimicking Drosophila's Downstream Neural Circuitry With 2D β‐Ga2O3 Schottky Diodes

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Bio‐inspired artificial vision systems have made significant progress, but most focus on photo‐receptors, neglecting the hardware implementation of the efficient downstream neural circuits for complex computations like motion detection. To overcome this bottleneck, we demonstrate a neuromorphic vision system that mimics Drosophila's motion ...
Xianyu Hu   +4 more
wiley   +1 more source

Rectennas design using DG-MOSFETs

open access: yes, 2013
The objective of this work is to study the possibility of implementing SOI rectennas for UWB RFIDs, with undoped Double Gate MOSFETs (DG-MOSFETs). For that purpose we use two commercial TCAD tools: Sentaums Device (created by Synopsys), and ADS (created ...
Raúl Rodríguez   +9 more
core   +1 more source

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