Results 41 to 50 of about 152,416 (209)

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

Concept of 3D Antenna Array for Sub-GHz Rotator-Less Small Satellite Ground Stations and Advanced IoT Gateways

Telecom
Phased antenna arrays have revolutionized modern wireless systems by enabling dynamic beamforming, multibeam synthesis, and user tracking to enhance data rates and reduce interferences, yet their reliance on expensive active components (e.g., phase ...
Maryam Jahanbakhshi, Ivo Vertat
doaj   +1 more source

Multipurpose incoherent scatter measurement and data analysis techniques for EISCAT3D [PDF]

Atmospheric Measurement Techniques
EISCAT3D will be a high-power, high-duty-cycle, large-aperture multistatic radar system with digitally steerable aperture array antennas and solid-state transmitters.
I. I. Virtanen, A. Nigusie, A. Kero, N. Thomas, J. Lankinen   +4 more
doaj   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

Highly-Integrated Dual-Polarized Multibeam mm-Wave Array Antenna With Ultra-High Tx-Rx Isolation for In-Band Full Duplex (IBFD) Application

IEEE Open Journal of Antennas and Propagation
This article analyzes the current development status and requirements of wireless communication technology, and proposes a multibeam MM-wave antenna array with high-isolation for in-band full duplex (IBFD) wireless integrated access and backhaul ...
Tong Wu, Fanchao Zeng, Xiaodong Yang, Weisen Guo, Zhiya Zhang   +4 more
doaj   +1 more source

Space–time receiver for spread spectrum communication systems with beam tracking

IET Radar, Sonar & Navigation, 2022
A method based on beam tracking in an underwater acoustic (UWA) time‐varying channel was proposed to improve the performance of UWA spread spectrum communication systems using arrays. In the ocean, the acoustic signal reaches the receiver through various
Wenbo Zhang, Baosheng Zhang, Feng Zhou
doaj   +1 more source

SMTC Configuration and Window Adjustment Strategies for Beam Hopping in NR‐NTN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Beam hopping is an effective transmission strategy for nonterrestrial networks (NTNs), enabling satellites to allocate limited power and spectrum resources across different geographical regions over time. However, in NR‐based NTN systems, beam hopping complicates synchronization monitoring because synchronization signal block (SSB) arrivals ...
Hee Wook Kim, Kyungrak Lee, Joon Gyu Ryu
wiley   +1 more source

A novel technique and soldering method to improve performance of transparent polymer antennas [PDF]

, 2010
This article is archived here with permission from IEEE - Copyright @ 2010 IEEEA novel technique and a non-thermal soldering method to improve the performance of AgHT-8 transparent polymer antennas are proposed in this paper.
AbuTarboush, HF, Nilavalan, R, T. Peter, Hattan F. AbuTarboush, S. W. Cheung, Cheung, SW, R. Nilavalan, Peter, T   +7 more
core   +1 more source

Low‐Cost 2‐D Multibeam Transmitarray With Enhanced Beam Coverage Using Sliding Effective Aperture

IET Microwaves, Antennas & Propagation
To address the spectrum shortage in fifth‐generation (5G) and future communication systems, multibeam antenna is a hotspot in recent years. 2‐D multibeam antennas usually have limited coverage range and with high dielectric loss and cost.
Mengyuan Wang, Mingxi Han, Yaozhong Cui, Le Chang, Zhijun Zhang, Fei Yang, Anxue Zhang   +6 more
doaj   +1 more source

Multibeam Microstrip Leaky-Wave Antenna Array for Passive 2-D Scanning in the 5 GHz Wi-Fi Band

IEEE Open Journal of Antennas and Propagation
A compact planar multibeam antenna array for two-dimensional (2-D) beam scanning in the 5 GHz Wi-Fi ISM band, is presented. The array is composed of four half-width-microstrip leaky-wave antennas (HWM-LWA) that are interconnected by $4\times 4 ...
Alejandro Gil-Martinez, David Canete-Rebenaque, Miguel Poveda-Garcia, Astrid Algaba-Brazalez, Jose Luis Gomez-Tornero   +4 more
doaj   +1 more source