Results 41 to 50 of about 3,456 (311)

Compact Broadband Microstrip Triangular Antennas Fed By Folded Triangular Patch for Wireless Applications

open access: yesAdvanced Electromagnetics, 2021
This study presents two new designs of reduced size broadband microstrip patch antennas for ultra-wideband (UWB) operation. A folded triangular patch’s feeding technique, V-shaped slot, half V-shaped slot and shorting pins are employed to design the ...
H. Malekpoor, M. Shahraki
doaj   +1 more source

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

A Wideband High-Gain All-Metal Antenna under Quad Resonances Realized by Folding a Simple Patch [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
This paper presents a novel wideband antenna with a simple structure comprising an integrated microstrip patch antenna (MPA) and three shorted microstrip patch antennas (SMPAs).
Mohammad Hadi Moradi Aredekani   +2 more
doaj   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

open access: yesAdvanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son   +5 more
wiley   +1 more source

U-Slotted Wideband Microstrip Patch Antenna for Ka Band and mmW 5G Applications [PDF]

open access: green, 2022
Touko Tcheutou Stephane Borel   +1 more
openalex   +1 more source

Directional Flow of Confined Polaritons in CrSBr

open access: yesAdvanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak   +10 more
wiley   +1 more source

THREE ANTENNAS DESIGN USED BY ULTRA-WIDEBAND WIRELESS SYSTEMS

open access: yesDiyala Journal of Engineering Sciences, 2015
As there are many challenges in indoor and outdoor wireless propagation, high gain and sensitive antenna design plays crucial role in ultra wideband (UWB) small size systems.
RASHID A. FAYADH
doaj  

Super-Wideband Monopole Printed Antenna with Half-Elliptical-Shaped Patch

open access: yesTelecom
Super-wideband (SWB) antennas have emerged as a promising technology for next-generation wireless communication systems due to their ability to transmit and receive signals across a wide frequency spectrum.
Fitri Yuli Zulkifli   +4 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

open access: yesAdvanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella   +3 more
wiley   +1 more source

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