Results 101 to 110 of about 14,945 (257)

Circularly Polarized Asymmetric Single-Point Probe-Fed Hybrid Dielectric Resonator Antenna for Wireless Applications

open access: yesTelecom
This paper presents a hybrid dielectric resonator antenna (HDRA) for circularly polarized (CP) radiation at 5 GHz, designed for WLAN applications.
NareshKumar Darimireddy
doaj   +1 more source

Simulation and Analysis of a Metamaterial Sensor Based on a Microring Resonator

open access: yesSensors, 2011
Metamaterials are artificial media structured on a size scale smaller than the wavelength of external stimuli, that may provide novel tools to significantly enhance the sensitivity and resolution of the sensors.
Yaozhong Lan   +4 more
doaj   +1 more source

HIGHER ORDER MODE LAYERED CYLINDRICAL DIELECTRIC RESONATOR ANTENNA

open access: yesProgress In Electromagnetics Research C, 2019
A wideband high gain circularly polarized layered cylindrical dielectric resonator antenna (DRA) that operates in a higher order mode is proposed in the X-band frequency range. The antenna consists of two dielectric layers having different dielectric constants and radii.
Abdulmajid A. Abdulmajid, Salam Khamas
openaire   +1 more source

Sustainable Carbon Fibers Enable Stable Long‐Term Lithium Metal Deposition for Prospective Zero‐Excess Lithium Metal Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This work presents lightweight, lignin‐derived carbon fiber current collectors that enable controlled lithium deposition. Structural defects and intermediate‐sized pores stabilize pre‐nucleation quasi‐metallic lithium clusters, promoting uniform lithium plating and stripping.
Samantha L. S. Southern   +13 more
wiley   +1 more source

Enhancement of gain and bandwidth of cylindrical dielectric resonator antenna excited by cavity-backed slot

open access: yesAlexandria Engineering Journal
Dielectric resonator antennas have been demonstrated to be an efficient radiator, especially with the possibility of fabricating it at low cost based on 3-D printing technologies.
Khalid F. Alsirhani   +5 more
doaj   +1 more source

Iterative integral equation solution for cylindrical dielectric resonator

open access: yesElectronics Letters, 1986
An exact integral equation describing the substrate-mounted open cylindrical dielectric resonator is derived, and a first approximate solution for the fundamental resonant mode is calculated. Results are presented and are compared with both experiment and another theoretical approach.
Lewis, P, McGeehan, JP, Rozzi, TE
openaire   +2 more sources

Machine Learning Driven Inverse Design of Broadband Acoustic Superscattering

open access: yesAdvanced Intelligent Discovery, EarlyView.
Multilayer acoustic superscatterers are designed using machine learning to achieve broadband superscattering and strong sound insulation. By incorporating a weighted mean absolute error into the loss function, the forward and inverse neural networks accurately map structural parameters to spectral responses.
Lijuan Fan, Xiangliang Zhang, Ying Wu
wiley   +1 more source

Device‐Level Implementation of Reservoir Computing With Memristors

open access: yesAdvanced Intelligent Systems, EarlyView.
Reservoir computing (RC) is an emerging computing scheme that employs a reservoir and a single readout layer, which can be actualized in the nanoscale with memristors. As a comprehensive overview, the principles of RC and the switching mechanisms of memristors are discussed, followed by actual demonstrations of memristor‐based RC and the remaining ...
Sunbeom Park, Hyojung Kim, Ho Won Jang
wiley   +1 more source

Wireless, Battery‐Free Wearable Pressure Sensor for Compression Therapy Entirely Built on Surface Mount Devices

open access: yesAdvanced Intelligent Systems, EarlyView.
This work presents a flexible, battery‐free sensor that forms a closed‐loop feedback system for smart compression therapy devices. Its scalable surface‐mount manufacturing, compact form factor, and wireless communication enable seamless integration with a wide range of active compression garments, improving user experience and therapeutic outcomes ...
Sinuo Zhao   +11 more
wiley   +1 more source

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