Results 91 to 100 of about 4,749,527 (270)
Optical Satellite Downlinks to Optical Ground Stations and High-Altitude Platforms [PDF]
, 2008 We have calculated the practical advantage of optical downlinks from earth observation (EO) satellites over conventional RF-downlinks in different downlink scenarios, taking into account blockage by cloud cover.
Giggenbach, Dirk +3 more
core
Advanced Materials Interfaces, EarlyView.Polymer binders and thick pressed LLZTO pellets limit all‐solid‐state battery integration through grain‐boundary carbon and high ohmic losses. A binder‐free capillary suspension ink is direct‐ink‐written and sintered into 254 μm$\mu{\rm m}$, 95.8%‐dense Ta‐stabilized LLZTO with 17.3 mS cm−1$\text{cm}^{-1}$ bulk conductivity, enabling thinner ...
Sri Vaishnavi Thummalapalli +7 more
wiley +1 more source
Life‐Like Ferrous Oxide Microspheres from Kombucha
Advanced Materials Interfaces, EarlyView.Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis +2 more
wiley +1 more source
Performance Analysis of Dynamically Routed O-ISLs Under PAT Constraints in LEO Constellations
IEEE AccessOptical Inter-Satellite Links (O-ISLs) in Low Earth Orbit (LEO) constellations enable low-latency, high-throughput global communication and are a key enabler of future Non-Terrestrial Networks (NTN) under 5G Advanced, 6G and beyond. This paper presents a
Manus Pengnoo +2 more
doaj +1 more source
Optical-SDMA for Broadband Aeronautical Communications" [PDF]
, 2003 Broadband communication for aircraft passengers is facing one of the most promising markets of near future. While currently systems introduced in L and Ku band are already limited in bandwidth considering service provisioning to several airline fleets ...
Giggenbach, Dirk +3 more
core
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 +9 more
wiley +1 more source
Hybrid Deep Learning-Based Adaptive Modulation for Free Space Optical (FSO) Communication
IEEE AccessThroughput values are closer to the required values of some current wireless systems, and free-space optics (FSO) has several promising applications in scenarios where high bandwidth demand necessitates a low-cost electronic warfare (EW) strategy.
Ammar Ali Sahrab, Safaa Albasri
doaj +1 more source
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 +3 more
wiley +1 more source
Inter-satellite optical wireless system
, 2007 Nowadays, the usage of Optical fibers and optical devices are evolved. Optical system has been used in many applications including space communication, which is satellite communication system.
Mohamad, Abu Bakar +2 more
core
Characterized Ecoflex Polydimethylsiloxane (PDMS) Hybrids for Advanced Flexible Devices
Advanced Materials Technologies, EarlyView.Ecoflex–PDMS hybrids are systematically characterized to identify an optimal composition that balances stretchability, optical transparency, and plasma bonding, enabling multifunctional applications in stretchable microfluidics, flexible sensing, and soft robotics.
Xiaoyue Kang +10 more
wiley +1 more source