Results 71 to 80 of about 13,102,569 (286)

Always at the forefront of microwave electronics (on the occasion of the 50th anniversary of the "Saturn" Research Institute) [PDF]

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2018
The article is devoted to the scientific and production enterprise "Saturn" - from the moment of creation to the present day. The decisive stages of its development and the scientific and technical results achieved by the team during the 50-year history ...
Glushechenko E. N., Chmil V. M.
doaj  

2D Hierarchical Black Phosphorus‐Mn2O3 Heterostructured Composites for High‐Performance Flexible Supercapacitors

Advanced Materials Interfaces, EarlyView.
A sonochemical strategy constructs an ex situ 2D hierarchical black phosphorus–Mn2O3 heterostructure, enabling intimate interfacial coupling, enhanced charge transport, and improved electrochemical stability. The optimized BPM‐37.5% electrode delivers 466 F g−1 with 84% retention after 8000 cycles, while the flexible device exhibits high areal energy ...
Sowmiya Selvaraj, Anand Sreekantan Thampy   +1 more
wiley   +1 more source

Reliability Analysis of Spaceborne Electronic Components under Extreme Space Environments

Space: Science & Technology
The application of 6G communication systems across multiple sectors requires advanced satellite communication networks to meet the demands for high-speed transmission, low latency, and secure connectivity. The reliability of radio frequency (RF) modules,
Jianzhong Ding, Shuo Yan, Haoyi Wang, Chunjie Wang   +3 more
doaj   +1 more source

On the role of satellite communications for emergency situations with a focus on Europe [PDF]

, 2011
International audienceIn this paper, we describe how satellite communications may contribute to disaster management. During emergency situations, satellite communications present many advantages in supporting or replacing a terrestrial infrastructure (if
Matteo Berioli, Laurent Thomasson, Berioli, Matteo, Franck, Laurent, Rosalba Suffritti, Boutry, Philippe, Luca Simone Ronga, Suffritti, Rosalba, Thomasson, Laurent, Guy Harles, Ronga, Luca Simone, Laurent Franck, LUCA SIMONE, Ronga, Philippe Boutry, Harles, Guy   +14 more
core   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

Performance evaluation of compansion-based clipped OFDM systems

EURASIP Journal on Wireless Communications and Networking
The peak-to-average power ratio (PAPR), commonly used to describe the amplitude variations of an OFDM (orthogonal frequency-division multiplex) signal, does not accurately reflect its impact on the system performance.
Stephan Pfletschinger, Guido Dietl
doaj   +1 more source

A new approach to develop and simulate future satellite systems

, 2022
Paper 2284, 4 S.Satellite networks still play an important role for communication especially with respect to disaster cases. But nevertheless the pressure to reduce development and deployment cost are still present.
Brandt, Hartmut, Krepel, Falco
core   +1 more source

Aerosol Jet Printing of Benzocyclobutene as a Thermally Stable, Low‐Loss Dielectric for Multilayer Microwave Electronics

Advanced Materials Technologies, EarlyView.
Multilayer aerosol jet printed components with a low‐loss, thermally stable dielectric are demonstrated using benzocyclobutene. Ink formulation and in‐line droplet evaporation control support high‐quality, versatile, and stable printing performance. A specialized measurement for low‐loss materials reveals promising microwave properties, which, combined
Md Ramjan Ali, Trent Moritz, Mohammad Tayeb Al Qaseer, Ethan B. Secor   +3 more
wiley   +1 more source

Copper Electroplated TPMS Polymer Lattices for Lightweight Absorption Dominant Electromagnetic Interference Shielding

Advanced Materials Technologies, EarlyView.
Copper electroplating transforms lightweight 3D‐printed TPMS polymer lattices into effective electromagnetic shields. Topology, relative density, and conductive seed layer continuity govern copper penetration, electrical resistance, and attenuation. SEA consistently exceeds SER, while 35% RD Diamond lattice gives the best performance, reaching 48.72 dB
Aman Al Khatib, Fares AlAwwa, Naod Mogos, Abdallah Kamal, Kin Liao, Marwan El Rich, Wael Zaki   +6 more
wiley   +1 more source

Self-organising satellite constellation in geostationary Earth orbit [PDF]

, 2015
This paper presents a novel solution to the problem of autonomous task allocation for a self-organizing satellite constellation in Earth orbit. The method allows satellites to cluster themselves above targets on the Earth’s surface.
Colombo, Camilla, Mingotti, Giorgio, McInnes, Colin, Mushet, Garrie   +3 more
core   +1 more source