Results 11 to 20 of about 2,770 (262)

Measurement of the Arctic UTLS composition in presence of clouds using millimetre-wave heterodyne spectroscopy [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
MARSCHALS (Millimetre-wave Airborne Receivers for Spectroscopic CHaracterisation in Atmospheric Limb Sounding) is a limb viewing instrument working in the millimetre and sub-millimetre spectral regions (from 294 to 349 GHz).
E. Castelli   +7 more
doaj   +1 more source

Millimeter Wave Multi-User Performance Evaluation Based on Measured Channels With Virtual Antenna Array Channel Sounder

open access: yesIEEE Access, 2018
Virtual antenna arrays are versatile and cost-effective tools for millimeter-wave channel characterization. Massive sampling of the channel in space with virtual antenna arrays enables high spatial resolution in channel sounding. In this paper, a uniform
Allan Wainaina Mbugua   +3 more
doaj   +1 more source

Emotion recognition method using millimetre wave radar based on deep learning

open access: yesIET Radar, Sonar & Navigation, 2022
Non‐contact emotion recognition is a new research field. Using millimetre‐wave radar does not require users to wear any equipment, and there is no privacy violation.
Xiaochao Dang, Zetong Chen, Zhanjun Hao
doaj   +1 more source

Radio Frequency Link and User Selection Algorithm for 5G Mobile Communication System

open access: yesComplexity, 2021
Based on the millimetre-wave time-domain channel detector, this paper conducts channel measurement and modelling for different scenarios and antenna types in typical frequency bands and thus carries out a study on the propagation characteristics of ...
Zhengnan Lv, Zhenghao Xi
doaj   +1 more source

Feasibility of Ambient RF Energy Harvesting for Self-Sustainable M2M Communications Using Transparent and Flexible Graphene Antennas

open access: yesIEEE Access, 2016
Lifetime is a critical parameter in ubiquitous, battery-operated sensors for machine-to-machine (M2M) communication systems, an emerging part of the future Internet of Things. In this paper, the performance of radio frequency (RF) to DC energy converters
Michael A. Andersson   +5 more
doaj   +1 more source

Analysis of Simulated and Measured Indoor Channels for mm-Wave Beamforming Applications

open access: yesInternational Journal of Antennas and Propagation, 2018
Ray tracing- (RT-) assisted beamforming, where beams are directly steered to dominant paths tracked by ray tracing simulations, is a promising beamforming strategy, since it avoids the time-consuming exhaustive beam searching adopted in conventional beam
Anders Karstensen   +4 more
doaj   +1 more source

Design and development of broadband gap waveguide‐based 0‐dB couplers for Ka‐band applications

open access: yesIET Microwaves, Antennas & Propagation, 2022
The design and fabrication of a wideband millimetre‐wave 0‐dB coupler is proposed in this paper using gap waveguide technology for low‐loss and high‐power applications in 30‐GHz frequency band.
Davoud Zarifi   +2 more
doaj   +1 more source

Experimental Characterization of Millimeter-Wave Indoor Propagation Channels at 28 GHz

open access: yesIEEE Access, 2018
The increasing requirement for the mobile data traffic accelerates the research of millimeterwave (mm-wave) for future wireless systems. Accurate characterization of the mm-wave propagation channel is fundamental and essential for the system design and ...
Guojin Zhang   +6 more
doaj   +1 more source

A Broadband Quasi-optical System for Measuring the Dielectric Properties in the Terahertz Band

open access: yesLeida xuebao, 2018
To fulfill the requirements of the dielectric property measurement in the terahertz band, herein, a broadband quasi-optical system was designed and verified utilizing a planar scanning system.
Liu Xiaoming   +5 more
doaj   +1 more source

Analysis of Phase Noise in a Hybrid Photonic/Millimetre-Wave System for Single and Multi-Carrier Radio Applications

open access: yesApplied Sciences, 2020
The future evolution of wireless networks, throughout the 5G era and beyond, will require the expansion and augmentation of millimetre-wave systems for both terrestrial and satellite communications.
Devika Dass   +3 more
doaj   +1 more source

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