Results 161 to 170 of about 2,797,043 (365)
Remote SensingLow-slow-small (LSS) target recognition using multi-dimensional radar remains challenging due to weak signatures, similar kinematics, and overlapping short-term Doppler patterns. Digital-array radar provides continuous, complementary Doppler-spectrum and
Jia Liu +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele +2 more
wiley +1 more source
Radio over fibre distribution systems for ultra-wide band and millimetre wave applications [PDF]
, 2011 Short range wireless technology such as ultra-wideband (UWB) and 60 GHz millimetre wave (mm-wave) play a key role for wireless connectivity in indoor home, office environment or large enclosed public areas.
Shams Eldin, Haymen
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A Flexible Millimeter Wave Radio Channel Emulator Design with Experimental Validations [PDF]
, 2018 Millimeter wave (mmWave) channel emulator (CE)is an essential tool for air interface testing of the upcomingmmWave communication systems. A flexible CE, which is capableof frequency setting from sub-6 GHz to mmWave bands andflexible system bandwidth ...
Hentilä, L. (Lassi) +8 more
core +1 more source
Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion
Advanced Engineering Materials, EarlyView.Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello +7 more
wiley +1 more source
A hybrid mode locked laser as millimetre wave modulated data source for radio-over-fiber systems [PDF]
, 2009 The paper presents a characterisation of a hybrid mode locked laser under external injection locking. It shows how such a system can be used to transmit baseband data without the requirement of an external ...
Cryan, MJ +3 more
core +1 more source
Electronics LettersAntenna chambers are RF‐shielded enclosures which are required for antenna and radio performance measurements. Typically, anechoic chambers (ACs) are used for measuring directional metrics (e.g.
Yifa Li +5 more
doaj +1 more source
IEEE Photonics Journal, 2019 A symmetrical dual-beam end-fire bowtie antenna with gain enhancement is achieved by integrating three pairs of metamaterial (MTM) arrays for 5G MIMO applications.
Haixin Jiang +3 more
doaj +1 more source
Feasibility of Nitrogen as a Carrier Gas for Inconel Cold Spray in Hydropower Application
Advanced Engineering Materials, EarlyView.N2, despite being nearly two orders of magnitude cheaper than He, is a feasible carrier gas for cold spray Inconel coatings in hydropower repair applications when higher gas temperature and pressure are used. Reducing powder size significantly improved cavitation resistance, while the addition of fine chromium carbide particles further enhanced erosion
Tianhao Wang +4 more
wiley +1 more source
Millimetre Wave Power Measurement [PDF]
, 2010 There is currently no traceable power sensor for millimetre wave frequencies above 110 GHz. This thesis investigates a novel approach to remove this limitation by combining the placement of a uniquely designed microchip directly in waveguide.
Jones, Mark Hedley
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