Results 71 to 80 of about 3,351,780 (270)

Reliability of line-of-sight radio-relay systems

Journal of Telecommunications and Information Technology, 2006
The modern radio transmission systems are specifically designed for catching principally two main objectives: on one side to provide a radio solution for long distance where large configurations are required to fulfill the high capacity transmissions ...
Jan Bogucki, Ewa Wielowieyska
doaj   +1 more source

All‐Printed, Flexible, Organic Thermoelectric Generators for Ambient Operation with Enhanced Performance under Mechanical Bending

Advanced Materials Technologies, EarlyView.
Fully printed bipolar organic thermoelectric generators are fabricated on flexible substrates and characterized entirely under ambient conditions. The devices exhibit Seebeck coefficients up to 30 µV K−1 and output powers up to 8.8 nW, with enhanced performance under bending.
Loup Chopplet, Jiang Jing, Nicolas Battaglini, Samia Zrig, Vincent Noël, Emanuele Orgiu, Benoît Piro, Giorgio Mattana   +7 more
wiley   +1 more source

Distributional Properties of Stochastic Shortest Paths for Smuggled Nuclear Material [PDF]

Journal of Systemics, Cybernetics and Informatics, 2012
The shortest path problem on a network with fixed weights is a well studied problem with applications to many diverse areas such as transportation and telecommunications.
Leticia Cuellar, Feng Pan, Fred Roach, Kevin Saeger   +3 more
doaj  

TERAHERTZ TECHNOLOGIES IN TELECOMMUNICATION SYSTEMS. PART 2. RESEARCH AND SIMULATION OF DVB-C AND PULSED ULTRAWIDEBAND TV SIGNALS TRANSMISSION THROUGH WIRELESS LINK IN TERAHERTZ RANGE

Радіоелектронні і комп'ютерні системи, 2018
The laboratory testbed of a digital simplex radio-relay system of the terahertz range has been studied for the first time in practical terms. It consists of the receiver and transmitter parts of 130÷134 GHz frequency range and a digital modem with a ...
Гліб Леонідович Авдєєнко, Сергій Георгійович Бунін, Теодор Миколайович Наритник   +2 more
doaj   +1 more source

Design and Fabrication of High Dielectric GRIN Lens for a Directive Antenna Using a Hybrid Filled Voxel Additive Manufacturing Technique

Advanced Materials Technologies, EarlyView.
Hybrid‐filled voxel AM enables integration of high‐permittivity materials into additively manufactured devices. Using this approach, a graded refractive index (GRIN) lens is demonstrated, achieving a 50% antenna size reduction with enhanced directivity.
Qianfang Zheng, Anna Radkovskaya, Kailun Xu, Ekaterina Shamonina, Patrick S. Grant   +4 more
wiley   +1 more source

Real-Time Status Update System in a Parallel Blocking Queue

IEEE Open Journal of the Communications Society
Multi-path transmission is promising in improving the freshness of information received in status-updating systems. However, multi-path transmission results in out-of-order arrivals at the monitoring point, which poses significant challenges to the ...
Zhengchuan Chen, Junyao Zhu, Nikolaos Pappas, Lyutianyang Zhang, Min Wang, Chaowei Tang, Tony Q. S. Quek   +6 more
doaj   +1 more source

Laser Terminals on CubeSats: Developments for Telecommunications and Quantum Links

International Journal of Satellite Communications and Networking
ABSTRACTSatellite‐based laser communication is an emerging technology that is finding its way from research to industry. Compared to radio frequency (RF) systems, it has a more efficient size, weight, and power budget and, furthermore, is license free. The required space laser terminals can be designed in different sizes, depending on the mission needs.
Roubal, Christian, Dolejsky, Till, Rödiger, Benjamin, Rein, Fabian, Rosano Nonay, Jorge, Rüddenklau, René, Papadopoulos, Christos, Schmidt, Christopher, Moll, Florian   +8 more
openaire   +3 more sources

Neutral‐pH Electropolymerization of Aniline on Hierarchically Porous Laser‐Induced Graphene Electrodes for Dual Biosensing

Advanced Materials Technologies, EarlyView.
Neutral‐pH electropolymerization of aniline on laser‐induced graphene (LIG) produces stable, brush‐like polyaniline coatings without requiring acidic conditions. The resulting PANI–LIG electrodes exhibit enhanced electroactive surface area, efficient charge transfer, and dual sensing capability for β‐blockers and pH, providing a scalable platform ...
Angelika Łepek, Aiswarya Manohar, Mattia Pierpaoli, Robert Bogdanowicz, Łukasz Gaweł, Mohsen Khodadadi Yazdi, Jacek Ryl   +6 more
wiley   +1 more source

Fabrication Technologies for Soft, Multimaterial Optical Fibers for In Vivo Diagnostics and Phototherapy, With a Focus on Extrusion Printing

Advanced Materials Technologies, EarlyView.
Soft multimaterial optical fibers integrate multiple functionalities—such as waveguiding, side emission, sensing, drug delivery or actuation—into a single filament for wearable, implantable, and tissue‐integrated devices for diagnostics and phototherapy.
Zahra Kafrashian, Jun Feng, Aránzazu del Campo   +2 more
wiley   +1 more source

Advances in Safe, Flexible, and Stretchable Batteries for Wearable Applications

Advanced Materials Technologies, EarlyView.
Unlike previous reviews centered on component‐based deformability, this work highlights safety‐driven design strategies for flexible and stretchable batteries. By integrating material‐level engineering, geometry‐controlled structures, biocompatibility, and self‐protection mechanisms, it establishes a unified framework that connects mechanical ...
Hyewon Kang, Garan Byun, Seunghyeb Ban, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source