Results 131 to 140 of about 1,581,787 (389)

Advanced Communications Satellite Systems [PDF]

, 1983
J. N. Sivo
openalex   +1 more source

The AMSC mobile satellite system: Design summary and comparative analysis [PDF]

Mobile satellite communications will be provided in the United States by the American Mobile Satellite Consortium (AMSC). Telesat Mobile, Inc. (TMI) and AMSC are jointly developing MSAT, the first regional Mobile Satellite Service (MSS) system. MSAT will
Noreen, Gary K.
core   +1 more source

Pressure Dependent Integration of White Light Emission in SiQDs@EuZIF‐8 Metal Organic Frameworks

Advanced Optical Materials, EarlyView.
A tunable photoluminescent material was developed using encapsulation of silicon quantum dots and europium ions into ZIF‐8 enabling multiple emission centers and pressure‐responsive white light emission. Increasing pressure induces ligand‐metal charge transfer (LMCT) and metal‐metal charge transfer (MMCT) within ZIF‐8 pores, leading to aggregation ...
Sarojini Jeeva Panchu, Sandeep Eswaran Panchu, Mart‐Mari Duvenhage, Hendrik C Swart   +3 more
wiley   +1 more source

Response of geostationary communications satellite solid‐state power amplifiers to high‐energy electron fluence

, 2015
The key components in communications satellite payloads are the high‐power amplifiers that amplify the received signal so that it can be accurately transmitted to the intended end user.
W. Lohmeyer, A. Carlton, F. Wong, M. Bodeau, Andrew K. Kennedy, K. Cahoy   +5 more
semanticscholar   +1 more source

International communications satellite systems [PDF]

Ten satellite systems for international communication are briefly described.
Wu, William W.
core   +1 more source

Effects of Varying Deposition Rates of a Carbazole and Triazine Derivative on Its Tunable Emission and Charge‐Transporting Properties Beneficial for Efficient Red Electroluminescent Devices

Advanced Optical Materials, EarlyView.
The highly efficient and ultrafast thermally activated delayed fluorescence (TADF) behavior of the bipolar derivative of carbazole and triazine stems from the high‐lying triplet states (hot TADF), which has a direct impact on the overall triplet harvesting of guest‐host mixtures.
Melika Ghasemi, Joseph Cameron, Woon K. Lin, Dmytro Volyniuk, Peter J. Skabara, Juozas V. Grazulevicius, Gjergji Sini   +6 more
wiley   +1 more source

Report on the Sixth International Conference on Digital Satellite Communications [PDF]

, 1983
A. L. Stimson
openalex   +1 more source

Communications platform payload definition study, executive summary [PDF]

Large geostationary communications platforms have been investigated in a number of studies since 1974 as a possible means to more effectively utilize the geostationary orbital arc and electromagnetic spectrum and to reduce overall satellite ...
Bertles, C. R., Clopp, H. W., Hawkes, T. A., Kao, T., Pontano, B. A.   +4 more
core   +1 more source

Chiral Metasurfaces with Multidimensional Tunability for Optical Chiral States

Advanced Optical Materials, EarlyView.
A novel bilayer perovskite chiral metasurface enables tunable transitions between BIC‐associated vortex centres and circularly polarized states via rotational symmetry control. Breaking rotational symmetry and applying in situ rotation to the upper layer allows precise, omnidirectional tuning of C points in momentum space. This evolution forms a Möbius‐
Dayang Lin, Abbas Ghaffari, Qing Gu
wiley   +1 more source

Interface‐Driven Enhancement of Photoluminescence and Second‐Harmonic Generation in InSe on Epitaxial TiN

Advanced Optical Materials, EarlyView.
TiN epilayers grown by molecular‐beam epitaxy offer reflectivity comparable to Au films but with superior thermal stability. When coupled with InSe, the InSe/TiN heterostructure exhibits remarkable enhancements in both photoluminescence and second‐harmonic generation compared to SiO2.
Kai‐Bo Liang, Chia‐Hao Lin, I‐Hung Ho, Yu‐Jung Lu, Shangjr Gwo, Hyeyoung Ahn   +5 more
wiley   +1 more source