Results 1 to 10 of about 2,770 (262)

Analysis of millimetre-wave polarization diverse multiple-input multiple-output capacity [PDF]

open access: yesRoyal Society Open Science, 2015
Millimetre-waves offer the possibility of wide bandwidth and consequently high data rate for wireless communications. For both uni- and dual-polarized systems, signals sent over a link may suffer severe degradation due to antenna misalignment ...
Nicholas P. Lawrence   +3 more
doaj   +2 more sources

Multiview three-dimensional reconstruction by millimetre-wave portable camera [PDF]

open access: yesScientific Reports, 2017
Millimetre-wave imaging is a powerful non-destructive inspection technique which has become widely used in areas such as through-the-wall imaging or concealed weapon detection.
Jaime Laviada   +4 more
doaj   +2 more sources

Radar cross‐section measurement in millimetre‐wave for passive millimetre‐wave identification tags

open access: yesIET Microwaves, Antennas and Propagation, 2015
The passive millimetre‐wave identification (MMID) technology was introduced few years ago, exploiting the advantages of the passive ultra‐high frequency (UHF) radio frequency identification (RFID). The communication is based on backscattering modulation, related to the radar cross‐section (RCS) of the transponder.
Smail Tedjini
exaly   +4 more sources

Precise Mechanical Oscillator Design and Calibration for Characterising Sub-Millimetre Movements in mmWave Radar Systems [PDF]

open access: yesSensors
For many industrial and medical applications, measuring sub-millimetre movements has become crucial, for instance, for the precise guidance of surgical robots.
Felipe Parralejo   +4 more
doaj   +2 more sources

Millimetric waves communications for Railways

open access: yesTransportation Research Procedia, 2023
Peer-review under responsibility of the scientific committee of the Transport Research Arena (TRA) Conference ; International ...
Berbineau, Marion   +8 more
openaire   +4 more sources

Integrated 10-GHz Graphene FET Amplifier

open access: yesIEEE Journal of Microwaves, 2021
Graphene has unique electrical and mechanical properties which can pave the way for new types of devices for microwave applications. However, emerging technologies often have problems with yield and still considerable variation in device parameters cause
Ahmed Hamed   +5 more
doaj   +1 more source

Modeling Multi-Frequency Characteristics for Classroom and Hall Scenarios at 2-4, 9-11 and 27-29 GHz Bands

open access: yesIEEE Access, 2021
This paper investigates the wideband channel characteristics obtained in a classroom and a hall indoor scenarios at 2-4, 9-11 and 27-29GHz. A virtual uniform circular array (UCA) based channel sounding system was utilized to capture wideband spatial ...
Guojin Zhang   +7 more
doaj   +1 more source

Diagnosis of subarray‐structured base station antennas in a compact setup based on solving linear equations

open access: yesIET Microwaves, Antennas & Propagation, 2023
Since the total number of the antenna elements can be up to hundreds in a massive multiple‐input multiple‐output (MIMO) system, subarray‐structured base station (BS) array configurations are widely adopted to achieve a good cell coverage and to reduce ...
Mengting Li, Fengchun Zhang, Wei Fan
doaj   +1 more source

1-Bit Transmission-Type Digital Programmable Coding Metasurface with Multi-Functional Beam-Shaping Capability for Ka-Band Applications

open access: yesMicromachines, 2023
Digital programmable coding metasurfaces (DPCMs) have recently attracted enormous attention and have been broadly applied, owing to their ability to manipulate electromagnetic (EM) wave behaviours and programmable multi-functionality.
Aqeel Hussain Naqvi   +3 more
doaj   +1 more source

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