Results 51 to 60 of about 621,396 (302)
IEEE Access, 2019 In this paper, we propose a W-band 8-quadrature-amplitude-modulation (8QAM) frequency tripling photonic vector millimeter-wave (mm-wave) signal generation method by using a phase modulator (PM) with only amplitude pre-coding.
Lun Zhao +5 more
doaj +1 more source
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 +5 more
doaj +1 more source
Wireless Powered Communication: Opportunities and Challenges
, 2014 The performance of wireless communication is fundamentally constrained by the limited battery life of wireless devices, whose operations are frequently disrupted due to the need of manual battery replacement/recharging.
Bi, Suzhi, Ho, Chin Keong, Zhang, Rui
core +1 more source
Synchrotron Radiation for Quantum Technology
Advanced Functional Materials, EarlyView.Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader +10 more
wiley +1 more source
In-Vessel Resonant Communications
IEEE AccessThis paper presents a comprehensive performance estimation of enclosed volume (in-vessel) resonant communications. This type of communications can be used for measurements of pertinent parameters of liquids such as temperature, density, or viscosity ...
Vitalii Kirillov +3 more
doaj +1 more source
IEEE Access, 2020 Media-Based Modulation (MBM) is regarded as a promising technique for future massive machine-type communications (mMTC) due to its high energy/spectral efficiency, good error performance and low-complexity radio frequency hardware implementation. In this
Xiangxue Ma +2 more
doaj +1 more source
A Comparative Survey of Optical Wireless Technologies: Architectures and Applications
, 2018 New high-data-rate multimedia services and applications are evolving continuously and exponentially increasing the demand for wireless capacity of fifth-generation (5G) and beyond.
Chowdhury, Mostafa Zaman +3 more
core +1 more source
6G White Paper on Machine Learning in Wireless Communication Networks
, 2020 The focus of this white paper is on machine learning (ML) in wireless communications. 6G wireless communication networks will be the backbone of the digital transformation of societies by providing ubiquitous, reliable, and near-instant wireless ...
Abbas, Robert +26 more
core +1 more source
Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics
Advanced Functional Materials, EarlyView.Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro +4 more
wiley +1 more source
Advanced Functional Materials, EarlyView.This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva +9 more
wiley +1 more source