Results 81 to 90 of about 6,349 (294)

Is fiber the catalyst for growth of the mobile wireless network? [PDF]

open access: yes, 2015
This paper will focus on how the growth of the mobile wireless technology can be supported by optical fiber, through wireless over fiber technologies. The paper will include recent advances in the field of fiber-wireless convergence such as cloud-based ...
Ng, Wai Pang   +3 more
core   +1 more source

Assessment of Cloud Height Measurements Derived from Millimeter-wave Cloud Radar in China

open access: yes应用气象学报
Millimeter-wave cloud radar serves as a high-resolution, all-weather, ground-based remote sensing instrument used for cloud vertical structure detection.
Gao Liangshu   +3 more
doaj   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

open access: yesAdvanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Techniques for homodyne dechirp-on-receive linearly frequency modulated radar

open access: yes, 2011
This thesis presents work done to extend and improve the operation of homodyne dechirp-on-receive linearly frequency modulated radars. First, an investigation of the effect of common phase errors on the point response function of the radar is ...
Middleton, Robert
core  

Urban Traffic Imaging Using Millimeter-Wave Radar

open access: yes, 2022
Imaging technology enhances radar environment awareness. Imaging radar can provide richer target information for traffic management systems than conventional traffic detection radar.
Hua Zhang   +4 more
core   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

open access: yesAdvanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang   +14 more
wiley   +1 more source

Multi-Person Action Recognition Based on Millimeter-Wave Radar Point Cloud

open access: yesApplied Sciences
Human action recognition has many application prospects in human-computer interactions, innovative furniture, healthcare, and other fields. The traditional human motion recognition methods have limitations in privacy protection, complex environments, and
Xiaochao Dang   +5 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe   +4 more
wiley   +1 more source

Millimeter-wave Communication and Radar Sensing — Opportunities, Challenges, and Solutions [PDF]

open access: yes, 2021
With the development of communication and radar sensing technology, people are able to seek for a more convenient life and better experiences. The fifth generation (5G) mobile network provides high speed communication and internet services with a data ...
An, Sining
core  

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

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