Results 31 to 40 of about 21,387,745 (369)

5G Cellular and Fixed Satellite Service Spectrum Coexistence in C-Band

open access: yesIEEE Access, 2020
The C-Band (3.4 – 4.2 GHz) is a cornerstone for many satellite services including Fixed Satellite Service (FSS), in particular above 3.6 GHz. The large geographic coverage of C-band satellite beams represents a cost-effective communication solution ...
Eva Lagunas   +3 more
semanticscholar   +1 more source

Coherence and indistinguishability of highly pure single photons from non-resonantly and resonantly excited telecom C-band quantum dots [PDF]

open access: yesApplied Physics Letters, 2019
In the present work, the effect of resonant pumping schemes in improving the photon coherence is investigated on InAs/InGaAs/GaAs quantum dots emitting in the telecom C-band. The linewidths of transitions of multiple exemplary quantum dots are determined
C. Nawrath   +5 more
semanticscholar   +1 more source

A Compact Dual-Band Microstrip Patch Antenna for C- and X- and Ku-Band Applications

open access: yesEngineering Proceedings, 2023
The paper presents a compact dual-band pentagonal-shaped patch antenna, with resonating frequencies 7.6 GHz and 12 GHz, that is used for satellite communication, 5G application, and high-speed applications.
Muhammad Zahid   +2 more
doaj   +1 more source

Pressure Tuning of an Ionic Insulator into a Heavy Electron Metal: An Infrared Study of YbS [PDF]

open access: yes, 2009
Optical conductivity [$\sigma(\omega)$] of YbS has been measured under pressure up to 20 GPa. Below 8 GPa, $\sigma(\omega)$ is low since YbS is an insulator with an energy gap between fully occupied 4$f$ state and unoccupied conduction ($c$) band.
A. Ochiai   +5 more
core   +2 more sources

I-Shaped Metamaterial Using SRR for Multi-Band Wireless Communication

open access: yesCrystals, 2022
A novel I-shaped metamaterial (ISMeTM) using split-ring resonator (SRR) for multi-band wireless communication is presented in this paper. The proposed ISMeTM unit cell structure is designed using the three-square split-ring resonators (SSRRs) and I ...
Bukola Ajewole   +2 more
doaj   +1 more source

Design of high gradient, high repetition rate damped C-band rf structures [PDF]

open access: yes, 2017
The gamma beam system of the European Extreme Light Infrastructure–Nuclear Physics project foresees the use of a multibunch train colliding with a high intensity recirculated laser pulse. The linac energy booster is composed of 12 traveling wave C-band
Alesini, David   +13 more
core   +2 more sources

Simulation of shoreline change using AIRSAR and POLSAR C-band data [PDF]

open access: yes, 2011
This paper presents a new approach for modeling shoreline change due to wave energy effects from remotely sensed data. The airborne AIRSAR and POLSAR data were employed to extract wave spectra information and integrate them with historical remotely ...
Cracknell, Arthur   +2 more
core   +1 more source

Observation of Raman Gain in Reduced Length of Bismuth Erbium Doped Fiber [PDF]

open access: yesJournal of Optoelectronical Nanostructures, 2020
Raman amplification of a 49 cm Bismuth oxide (Bi2O3) as a nonlinear gainmedium based erbium doped fiber amplifier (EDFA) is reported in new and compactdesign in near infrared spectral regions.
شریفه شاهی   +3 more
doaj  

Satellite television transmission in the world - broadcasting systems and standards

open access: yesActa Scientiarum: Technology, 2020
This paper considers the characteristics of satellite television transmission in the world. An overview of the development of satellite television is given through the following characteristics: broadcasting systems - analog and digital (SDTV, HDTV ...
Branimir Jaksic   +4 more
doaj   +1 more source

Comparative cytogenetic analysis in 13 tortoise beetles (Coleoptera: Chrysomelidae: Cassidinae) from Brazil

open access: yesEuropean Journal of Entomology, 2016
In the present work, we have characterized the chromosomes of 13 Cassidinae beetles, belonging to four tribes, the broad aim being to increase the cytogenetic data and establish the mechanisms involved in chromosome evolution of this subfamily, which ...
Amália T. LOPES   +2 more
doaj   +1 more source

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