Results 71 to 80 of about 5,087 (193)

A Code‐Invariant QSG–VGA Co‐Design Methodology for Compact CMOS Vector‐Sum Phase Shifters

International Journal of Circuit Theory and Applications, Volume 54, Issue 10, Page 5165-5172, October 2026.
A circuit‐level co‐design methodology for compact vector‐sum phase shifters is presented, combining a code‐invariant common‐gate variable‐gain amplifier (VGA) with a resistorless quadrature signal generator (QSG). By maintaining an almost constant input resistance, explicit resistors are eliminated from the QSG.
Uxua Esteban Eraso, Carlos Sánchez‐Azqueta, Francisco Aznar, Concepción Aldea, Santiago Celma   +4 more
wiley   +1 more source

Thermo‐Kinetic Design of Magnesiothermic Reduction for Morphology‐Retaining Porous Si@C Anodes

Small, Volume 22, Issue 55, 1 October 2026.
Balancing Mg‐vapor supply and surface consumption during magnesiothermic reduction suppresses particle aggregation and preserves monodisperse morphology in porous Si@C spheres. The resulting architecture improves transport uniformity and reduces degradation within the electrode, leading to more stable high‐capacity cycling than aggregated counterparts ...
Chaeheon Woo, Yeongjin Kim, Xue Dong, Byung Joo Jeong, Xiaojie Zhang, Hyeon‐Seok Bang, Kyung In Kim, Minjae Kim, Donghyeon Lee, Junyoung Mun, Hak Ki Yu, Jae‐Young Choi   +11 more
wiley   +1 more source

Butler-Matrix Beamspace Front-Ends for Massive MIMO: Architecture, Loss Budget, and Capacity Impact

Sensors
Massive Multiple-Input Multiple-Output (MIMO) systems with hundreds or thousands of antenna elements are fundamental to next-generation wireless networks, promising unprecedented spectral efficiency through spatial multiplexing and beamforming.
Felipe Vico, Jose F. Monserrat, Yiqun Ge
doaj   +1 more source

Energy Optimization Algorithms for MIMO-OFDM Based Downlink C-RAN System

IEEE Access, 2019
In this paper, we consider a green communication design in a multiple-input-multiple-output orthogonal frequency-division multiplexing-based downlink cloud radio access network system with per-user quality of service constraints and remote antenna units (
Ruohong Guo, Pengcheng Zhu, Jiamin Li, Dongming Wang, Xiaohu You   +4 more
doaj   +1 more source

Delivery and Attitude Modulate Shared Neural Processing of Speech Through Distinct Frequency Channels

Psychophysiology, Volume 63, Issue 10, October 2026.
ABSTRACT Listeners' brains align when they attend to the same speech, but what determines how strongly they align is not well understood. We asked whether that alignment tracks the communicative relation between a listener and a message, manipulating it from the speaker's side and from the listener's, and bounding the account with a manipulation that ...
Barak Atia, Yair Berson, Abraham Goldstein   +2 more
wiley   +1 more source

Multiple Isolated Beams From Orthogonal Weight Synthesis for a 4×8 Beamforming Network, Including Mutual Coupling Correction and Topology Flexibility in the Design Process

IEEE Access
Hybrid beamforming networks lack flexibility due to severe limitations of analogue design. Recent research did not adequately break down the problem, focusing only on RF circuit design.
Romain Vergez
doaj   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, Volume 47, Issue 18, Page 16125-16154, 20 September 2026.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

Fault‐Controlled Plumbing System Beneath Lipari Volcanic Island Revealed by Seismic Matrix Imaging

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Lipari Island hosts an active magmatic–hydrothermal system, but its deep plumbing architecture remains poorly resolved due to strong seismic scattering. We apply passive seismic matrix imaging to public vertical‐component cross‐correlation functions from the dense 2018 Lipari nodal array, recovering relative‐reflectivity structures to ∼10 km ...
Jia Wei, Qiancheng Liu, Ling Chen
wiley   +1 more source

A Neural Network Approach to Broadband Beamforming

, 2019
Proceedings of the ICA 2019 and EAA Euroregio : 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019 : 9-13 September 2019, Aachen, Germany / proceedings editor: Martin Ochmann, Michael Vorländer, Janina Fels 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019, ICA 2019, Aachen, Germany, 9 Sep 2019 - 13 ...
Kuno, Yugo, Masiero, Bruno, Madhu, Nilesh   +2 more
openaire   +3 more sources

High-Isolation and Compact 4 × 4 Butler Matrix Feed Network for C-Band Switched-Beam Arrays

Electrica
This article presents the design, simulation, fabrication, and measurement of a compact 4 × 4 Butler matrix beamforming network for C-band applications.
Galip Orkun Arıcan, Mert Karahan
doaj   +1 more source