Results 21 to 30 of about 911,873 (313)

An extension of the RiMAX multipath estimation algorithm for ultra-wideband channel modeling

EURASIP Journal on Wireless Communications and Networking, 2018
This work presents an extension of the high-resolution RiMAX multipath estimation algorithm, enabling the analysis of frequency-dependent propagation parameters for ultra-wideband (UWB) channel modeling. Since RiMAX is a narrowband algorithm, it does not
Brecht Hanssens, Emmeric Tanghe, Davy P. Gaillot, Martine Liénard, Claude Oestges, David Plets, Luc Martens, Wout Joseph   +7 more
doaj   +1 more source

Two-Dimensional Beam Steering Based on Compact Programmable Coding Metasurface

Applied Sciences, 2022
A programmable coding metasurface provides unprecedented flexibility to manipulate electromagnetic waves dynamically. By controlling the peculiarity of subwavelength artificial atoms, devices with metasurfaces perform various functionalities.
Fei Yang, Fan Xu, Chenxi Liu, Xinyu Yang, Ziqiang Wang, Junwei Wu, Xiaojian Fu   +6 more
doaj   +1 more source

Convolution operations on time-domain digital coding metasurface for beam manipulations of harmonics

Nanophotonics, 2020
Time-domain digital coding metasurfaces have been proposed recently to achieve efficient frequency conversion and harmonic control simultaneously; they show considerable potential for a broad range of electromagnetic applications such as wireless ...
Zhang Cheng, Yang Jin, Yang Liu Xi, Ke Jun Chen, Chen Ming Zheng, Cao Wen Kang, Chen Mao, Wu Zhan Hao, Chen Jian Feng, Cheng Qiang, Cui Tie Jun   +10 more
doaj   +1 more source

A compact high‐sensitivity tangential E‐probe with resonator and coupled balun

Electronics Letters, 2022
A compact high‐sensitivity probe for sensing up tangential E‐field is proposed and measured in this paper. The probe consists of an electric dipole with patches used to induce the tangential E‐field, a resonator made up of open circuit stubs (capacitor ...
Shang Zhang, Zhenguo Liu, Zhipeng Chen, Mengzi Li, Weibing Lu   +4 more
doaj   +1 more source

Patch Antenna Loaded With Paired Shorting Pins and H-Shaped Slot for 28/38 GHz Dual-Band MIMO Applications

IEEE Access, 2020
A novel dual-band patch antenna operating at 28/38 GHz is proposed for multiple-input multiple-output (MIMO) communication systems in this paper. The antenna utilizes substrate integrated waveguide (SIW) transmission line as the feed by means of a ...
Pengfei Liu, Xiao-Wei Zhu, Yan Zhang, Xiang Wang, Chunfeng Yang, Zhi Hao Jiang   +5 more
doaj   +1 more source

A universal metasurface antenna to manipulate all fundamental characteristics of electromagnetic waves

Nature Communications, 2023
Metasurfaces have promising potential to revolutionize a variety of photonic and electronic device technologies. However, metasurfaces that can simultaneously and independently control all electromagnetics (EM) waves’ properties, including amplitude ...
Geng-Bo Wu, Jun Yan Dai, Kam Man Shum, Ka Fai Chan, Qiang Cheng, Tie Jun Cui, Chi Hou Chan   +6 more
doaj   +1 more source

Artificial intelligence with metasurfaces: from intelligent design to intelligent computing

PhotoniX
The rapid development of artificial intelligence (AI) has revolutionized traditional design and optimization approaches for metamaterials. By leveraging AI techniques, the time required for the metamaterial design process is significantly reduced, thus ...
Qian Ma, Zi Rui Feng, Junming Hou, Che Liu, Yu Ming Ning, Rui Si Li, Qian Wen Wu, Yi Su Huang, Yi Zhang, Ze Gu, Jian Wei You, Tie Jun Cui   +11 more
doaj   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

A plasmonic meta-rotary travelling-wave oscillator with ultrahigh phase accuracy and figure of merit

Light: Science & Applications
High phase accuracy and figure of merit (FOM) of quadrature signals are essential for integrated systems, including quadrature amplitude modulation (QAM) communications and multi-input multi-output (MIMO) radar.
Da Yue Yao, Hao Chi Zhang, Pei Hang He, Jia Jie Shen, Jia Wen Zhu, Peigen Zhou, Xin Yu Zhang, Le Peng Zhang, Li Jie Wu, Cun Yue Wei, Rui Wen Shao, Yi Fan, Yang Zhao, Jixin Chen, Wei Hong, Tie Jun Cui   +15 more
doaj   +1 more source

Hybrid neuroelectronics: towards a solution-centric way of thinking about complex problems in neurostimulation tools

Frontiers in Electronics, 2023
Responsive neuromodulation is increasingly being used to treat patients with neuropsychiatric diseases. Yet, inefficient bridges between traditional and new materials and technological innovations impede advancements in neurostimulation tools.
Sofia Drakopoulou, Francesc Varkevisser, Linta Sohail, Masoumeh Aqamolaei, Tiago L. Costa, George D. Spyropoulos   +5 more
doaj   +1 more source