Results 101 to 110 of about 4,005,914 (318)

Optically referenced 300 GHz millimetre-wave oscillator

open access: yesNature Photonics, 2021
T. Tetsumoto   +5 more
semanticscholar   +1 more source

High-Isolation Leaky-Wave Array Antenna Based on CRLH-Metamaterial Implemented on SIW with ±30o Frequency Beam-Scanning Capability at Millimetre-Waves

open access: yesElectronics, 2019
The paper presents a feasibility study on the design of a new metamaterial leaky-wave antenna (MTM-LWA) used in the construction of a 1 × 2 array which is implemented using substrate-integrated waveguide (SIW) technology for millimetre-wave beamforming ...
Mohammad Alibakhshikenari   +5 more
semanticscholar   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Improving coverage of indoor millimetre wave systems using spherical reflectors

open access: yesIET Microwaves, Antennas & Propagation
The increased demand for user device connectivity has led to spectral congestion which is driving exploration of higher frequency spectrum, such as millimetre wave frequencies.
Priya A. Qualtrough‐Mittal   +2 more
doaj   +1 more source

Beam‐scanning leaky‐wave antenna based on CRLH‐metamaterial for millimetre‐wave applications

open access: yesIET Microwaves, Antennas & Propagation, 2019
This paper presents empirical results of an innovative beam-scanning leaky-wave antenna (LWA), which enables scanning over a wide angle from - 35° to + 34.5° between 57 and 62 GHz, with broadside radiation centred at 60 GHz.
Muhammad Alibakhshikenari   +7 more
semanticscholar   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

The effects of rain fade on millimetre wave channel in tropical climate

open access: yesBulletin of Electrical Engineering and Informatics, 2019
The main objective of this paper to determine multipath and time-varying channel behaviour of short-terrestrial millimetre-wave point-to-point radio links.
Asma Ali Hussein Budalal   +3 more
semanticscholar   +1 more source

Protection of Millimetre-Wave Astronomy [PDF]

open access: yesSymposium - International Astronomical Union, 2001
Development of radio technologies will lead to a serious conflict between millimetre-wave astronomy and telecommunication services. I describe characteristics of millimetre-wave astronomy and technical aspects related to radio astronomical observations. Three examples of possible interference to millimetre-wave astronomy are described.
openaire   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle   +5 more
wiley   +1 more source

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