A robust multi‐sampling rate digital predistortion for ultra‐broadband power amplifiers
Sign Up to like & getrecommendations! Published in 2019 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32116
Abstract: In this letter, a robust multisampling rate digital predistortion (DPD) scheme is proposed to linearize ultra‐broadband power amplifiers (PAs) under the limited DAC sampling rate. In the ultra‐broadband scenarios, it is no longer affordable to… read more here.
Keywords: ultra broadband; digital predistortion; rate; rate digital ... See more keywords
Multi-Scale Design of Ultra-Broadband Microwave Metamaterial Absorber Based on Hollow Carbon/MXene/Mo2 C Microtube.
Sign Up to like & getrecommendations! Published in 2023 at "Small"
DOI: 10.1002/smll.202207051
Abstract: Developing various nanocomposite microwave absorbers is a crucial means to address the issue of electromagnetic pollution, but remains a challenge in satisfying broadband absorption at low thickness with dielectric loss materials. Herein, an ultra-broadband microwave… read more here.
Keywords: ultra broadband; broadband; broadband microwave; metamaterial absorber ... See more keywords
Design and Analysis of Ultra Broadband Nano-absorber for Solar Energy Harvesting
Sign Up to like & getrecommendations! Published in 2017 at "Plasmonics"
DOI: 10.1007/s11468-017-0533-1
Abstract: In this paper, we propose a metamaterial based ultra broadband nano-absorber (UBNA) for solar energy harvesting, whose elements consist of a ring column and dual hexagon pillar at the center. In this absorber, the light… read more here.
Keywords: ultra broadband; nano absorber; energy harvesting; solar energy ... See more keywords
A Band Enhanced Tunable Ultra-Broadband Absorber Based on Loading the Lumped Resistors and Cavity Resonance
Sign Up to like & getrecommendations! Published in 2018 at "Plasmonics"
DOI: 10.1007/s11468-018-0854-8
Abstract: In this paper, we present and demonstrate a band enhanced tunable ultra-broadband absorber (TUA) based on loading the lump resistors (LRs) and cavity resonance. The absorber’s each cell integrates four split ring-shaped solid state plasma… read more here.
Keywords: absorber; ultra broadband; cavity resonance;
Ultra-broadband self-powered reduced graphene oxide photodetectors with annealing temperature-dependent responsivity
Sign Up to like & getrecommendations! Published in 2019 at "Carbon"
DOI: 10.1016/j.carbon.2019.07.033
Abstract: Abstract Self-powered ultra-broadband photothermoelectric photodetectors based on free-standing reduced graphene oxide (RGO) films annealed under various temperatures (200–1000 °C ) are developed for the first time. The preparation process of the free-standing RGO films is… read more here.
Keywords: rgo films; temperature; annealing temperature; self powered ... See more keywords
Ultra-broadband and angle-insensitive perfect absorber in the mid-infrared atmospheric window
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.167633
Abstract: Abstract An ultra-broadband and angle-insensitive absorber is proposed and demonstrated in the mid-infrared (MIR) atmospheric window. The structure is coated with periodically arranged metal grating on top of a metal-insulator-metal (MIM) plate. The average absorption… read more here.
Keywords: broadband angle; broadband; mid infrared; angle insensitive ... See more keywords
Pr3+/Er3+ co-doped tellurite glass with ultra-broadband near-infrared fluorescence emission
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2018.01.005
Abstract: Abstract Pr3+/Er3+ co-doped tellurite glass with composition 80TeO2-10Na2O-5WO3-5Nb2O5 was synthesized by the conventional melt-quenching technique, and the obtained glass was characterized by the UV/Vis/NIR absorption spectrum, near-infrared fluorescence spectrum, differential scanning calorimeter (DSC) curve, X-Ray… read more here.
Keywords: fluorescence; pr3 er3; glass; ultra broadband ... See more keywords
Ultra-broadband and wide-angle perfect absorber based on composite metal–semiconductor grating
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.07.085
Abstract: Abstract In this letter, we present an ultra-broadband and wide-angle perfect absorber based on composite Ge–Ni grating. Near perfect absorption above 90% is achieved in a wide frequency range from 150 nm to 4200 nm,… read more here.
Keywords: angle; wide angle; ultra broadband; perfect absorber ... See more keywords
A tunable ultra-broadband terahertz absorber based on two layers of graphene ribbons
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2019.105853
Abstract: Abstract In this paper, a novel configuration of a tunable ultra-broadband terahertz (THz) absorber based on two layers of graphene ribbons and two different kinds of substrate materials has been proposed. The recently suggested equivalent… read more here.
Keywords: ultra broadband; tunable ultra; layers graphene; two layers ... See more keywords
Numerical study of ultra-broadband wide-angle absorber
Sign Up to like & getrecommendations! Published in 2021 at "Results in physics"
DOI: 10.1016/j.rinp.2021.104146
Abstract: Abstract This paper proposes an ultra-broadband absorber numerically demonstrated with the finite-difference-time-domain method (FDTD). The absorber is composed of a bottom layer of refractory metal tungsten (W), an intermediate dielectric layer of aluminum trioxide (Al2O3),… read more here.
Keywords: numerical study; broadband; study ultra; ultra broadband ... See more keywords
Ultra-broadband perfect solar absorber by an ultra-thin refractory titanium nitride meta-surface
Sign Up to like & getrecommendations! Published in 2017 at "Solar Energy Materials and Solar Cells"
DOI: 10.1016/j.solmat.2017.12.033
Abstract: Abstract Electromagnetic wave absorbers with thinner structural thickness but with broader spectral absorption bandwidth are more desirable for various applications in solar energy and optoelectronics. In this work, a refractory titanium nitride meta-surface with efficient,… read more here.
Keywords: absorption; titanium nitride; ultra broadband; meta surface ... See more keywords