Results 31 to 40 of about 67,202 (260)

A Broad-Band Wide-Angle Linear-to-Circular Polarization Converter Based on Stripline Metasurface

IEEE Access, 2021
This paper proposes a broad-band linear-to-circular polarization converter based on a multi-layer stripline metasurface. The structure is constructed of three stripline metallic layers stacked with two dielectric plates, and it has different ...
Zuning Yang, Tiesheng Wu, Shunlan Zhang, Zhihui Liu, Dan Yang, Weiping Cao   +5 more
doaj   +1 more source

Biomimetic Microfractals Based Flexible Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
A leaf‐skeleton‐based microfractal architecture is integrated with guided CuNW networks and biomimetic triboelectric polymer layers, enabling breathable, flexible, and material‐efficient triboelectric nanogenerators. The resulting system combines enhanced charge generation and charge transport, offering potential for next‐generation self‐powered ...
Amit Barua, Mislav Matić, Ana‐Marija Pitner, Rituporn Gogoi, Aman Kumar, Mirko Poljak, Anastasia Koivikko, Vipul Sharma   +7 more
wiley   +1 more source

A Scalable and Cooperative MAC Protocol for Control Channel Access in VANETs

IEEE Access, 2017
In this paper, a scalable and cooperative medium access control (MAC) protocol (SCMAC) is proposed to support the periodic beaconing over the control channel in vehicular ad hoc networks.
Yi Cao, Haixia Zhang, Xiaotian Zhou, Dongfeng Yuan   +3 more
doaj   +1 more source

Interface‐Defect Synergy Engineering of Amorphous Ga2O3 for Voltage‐Tunable Dual‐Mode Optoelectronic Devices: Self‐Powered Imaging and Neuromorphic Vision

Advanced Functional Materials, EarlyView.
An interface‐defect co‐engineered strategy enables bias‐programmable integration of self‐powered photodetection and low‐power synaptic functionalities within a single‐material amorphous Ga2O3 device. This design achieves reversible switching via voltage modulation, supporting high‐contrast imaging and visual memory, and demonstrates a neuromorphic ...
Wanjun Li, Aijiang Yan, Lijuan Ye, Xuanyu Shan, Chunyan Liu, Hong Zhang, Shuren Zhou, Honglin Li, Di Pang, Yan Tang, Guoping Qin, Zhongqiang Wang, Peng Yu, Zhenxiang Cheng   +13 more
wiley   +1 more source

A USRP-Based Multi-Antenna Testbed for Reception of Multi-Site Cellular Signals

IEEE Access, 2019
This paper presents a design of a Software Defined Radio (SDR) multi-antenna testbed able to record live cellular signals from multiple sites. This measurement setup based on Universal Software Radio Peripheral (USRP) boards, is used to record live Long ...
Tomasz Izydorczyk, Fernando M. L. Tavares, Gilberto Berardinelli, Preben Mogensen   +3 more
doaj   +1 more source

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

Advanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li, Zhangzheng Xiao, Zheng Yan, Adnan Raza Altaf, Qun Song, Dingding Yao, Afshan Sohail, Yixin Wang, Wenxiu Ma, Shanjun Li, Yaohui Chen, Peiwen Liu, Kai Zhang   +12 more
wiley   +1 more source

SWORD: Towards a Soft and Open Radio Design for Rapid Development, Profiling, Validation and Testing

IEEE Access, 2019
The vision, as we move to future wireless communication systems, embraces diverse qualities targeting significant enhancements from the spectrum, to user experience.
Georgios Georgis, Marcin Filo, Alexios Thanos, Christopher Husmann, J. C. De Luna Ducoing, Rahim Tafazolli, Konstantinos Nikitopoulos   +6 more
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Numerical Full wave Analysis and Modeling of Plasmonic HEMT Performance Using Hydrodynamic Model

International Journal of Information and Communication Technology Research, 2019
The two dimensional (2D) plasmon propagation in the channel of a high electron mobility transistor (HEMT) is numerically modeled using the full wave technique.
Farzaneh Daneshmandian, Abdolali Abdipour, Amir Nader Askarpour   +2 more
doaj  

RSS-Based Localization of Multiple Directional Sources With Unknown Transmit Powers and Orientations

IEEE Access, 2019
Received-signal-strength (RSS)-based localization has received widespread attention recently. Due to the simple acquisition of the RSS measurements, the adequate inexpensive sensors in sensor networks are capable of providing the information needed for ...
Peiliang Zuo, Tao Peng, Kangyong You, Wenbin Guo, Wenbo Wang   +4 more
doaj   +1 more source