Results 71 to 80 of about 2,076,516 (339)
Multi‐mode dual‐polarised cavity backed patch antenna array for 5G mobile devices
IET Microwaves, Antennas & Propagation, 2021 This paper proposes a dual‐polarised cavity backed patch antenna for next generation phased arrays for mobile handsets. The antenna exhibits multi‐band performance, allowing to cover the 5G bands n257 (26.5–29.5 GHz), n258 (24.25–27.5 GHz), n261 (27.5–28.
Carla Di Paola +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This work developed a smart Janus wood membrane integrating asymmetric wettability with built‐in electrical sensing for oil‐water separation. The membrane achieved > 99.5% separation efficiency and high flux by leveraging wood's natural anisotropic pore structure.
Kaiwen Chen +10 more
wiley +1 more source
A Passive Harmonic Tag for Humidity Sensing
International Journal of Antennas and Propagation, 2014 This paper describes a passive harmonic tag for radio frequency identification (RFID) and wireless sensor applications. The tag uses a dual polarized UHF patch antenna as an input antenna.
Antonio Lazaro +2 more
doaj +1 more source
Low Profile Circularly Polarized Antennas for Modern Wireless Applications: A Review [PDF]
Journal of Engineering Science and Military TechnologiesLow-profile, circularly polarized antennas are gaining popularity due to the increasing demand for more compact and efficient wireless communication systems. As wireless technology advances, the need for smaller, more efficient antennas continues to grow.
Basim Sadek +2 more
doaj +1 more source
A Twelve-Beam Steering Low-Profile Patch Antenna With Shorting Vias for Vehicular Applications
IEEE Transactions on Antennas and Propagation, 2017 A low-profile twelve-beam printed patch antenna is presented for pattern reconfigurable applications. The patch is fed at the four sides using coaxial feeds.
A. Pal +3 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk +7 more
wiley +1 more source
IET Microwaves, Antennas & Propagation, 2021 A wideband and high gain circularly polarised patch antenna has been introduced. The proposed antenna combines an aperture coupled feeding with a T‐slot, four metallic vias and a patch with a diagonal slot to present high gain and wide 3‐dB axial ratio ...
Rasoul Fakhte, Iman Aryanian
doaj +1 more source
Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization
Advanced Functional Materials, EarlyView.We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat +3 more
wiley +1 more source
Radiation characteristics of corner reflector antennas.
, 1998 PhDThis thesis presents a study of the radiation characteristics of corner reflector antennas. The influence of the design parameters on the radiation characteristics are assessed using an analytical method and the Finite Difference Time Domain (FDTD)
Sterr, U.
core
Advanced Functional Materials, EarlyView.All‐solution‐processed, low‐cost extended short‐wavelength infrared photodetectors are realized by coupling colloidal HgTe quantum dots to plasmonic In2O3:Sn,F nanocrystals. Localized surface plasmon resonances boost and spectrally tailor light absorption between 1500 and 3000 nm, enabling responsivities above 40 A W−1.
Kseniia A. Sergeeva +9 more
wiley +1 more source