Results 61 to 70 of about 91,837 (247)

A wideband CPW ring power combiner with low insertion loss and high port isolation [PDF]

, 2012
In this paper we present a coplanar waveguide (CPW)-based ring power combiner that exhibits less than 0.8 dB insertion loss, better than 15 dB port match and higher than 22 dB isolation loss over the frequency range from 50 GHz to 100 GHz.
Li, C., Khalid, A., Lok, L.B., Papageorgiou, V., Cumming, D.R.S.   +4 more
core   +1 more source

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source

Deformation‐Tolerant Functional Elastomer Overlayers for Haze‐Assisted Light Extraction and Color Conversion in Stretchable Mechanoluminescent Films

Advanced Functional Materials, EarlyView.
Functional elastomer overlayers are integrated onto stretchable ZnS:Cu‐PDMS mechanoluminescent films to regulate light after emission without modifying the emissive composite. NLC‐PU provides haze‐assisted light extraction to enhance green mechanoluminescence, while DCM‐NLC‐PU combines green‐to‐yellow‐orange color conversion with enhanced outward light
Gyudam Jeon, Seongkyu Song, Soon Moon Jeong, Na Young Ha   +3 more
wiley   +1 more source

Microfluidic Architecting of Patchy MXene Core‐Shell Particles for Ultralow‐Loading Photothermal Shape‐Memory Actuation

Advanced Functional Materials, EarlyView.
Spatially distributing Ti3C2Tx nanosheets into core‐shell architecture, rather than as directly dispersed flakes, mitigates aggregation and enhances photon harvesting. When the Ti3C2Tx core‐shell particles are incorporated into a shape‐memory polymer matrix at an ultralow loading of 0.0024 wt%, the improved photothermal conversion translates into ...
May Maung Zaw, Maxim M. Trubyanov, Qian Wang, Siyu Chen, Hongyi Chen, Keyu Chen, Hongbin Sun, Muthu Vignesh Vellayappan, Xiaoying Qi, Sharon Mui Ling Nai, Kostya S. Novoselov, David W. Rosen, Daria V. Andreeva   +12 more
wiley   +1 more source

Target Parameter Estimation for OTFS-Integrated Radar-Communication Systems

IEEE Access
In high-mobility scenarios envisioned for 6G communications, orthogonal time frequency space (OTFS) has emerged as a promising alternative to conventional orthogonal frequency division multiplexing (OFDM) schemes.
Jiayin Liang, Jinfang Wen, Zhiling Tang
doaj   +1 more source

Speech Spectral Quantizers for Wideband Speech Coding

, 2001
. In this treatise a range of Line Spectrum Frequency (LSF) Vector Quantization (VQ) schemes were studied comparatively, which were designed for wideband speech codecs. Both predictive arrangements and memoryless schemes were investigated.
Guibé, G., How, H T, Hanzo, L
core   +1 more source

Scalable Fabrication of Thermally Reconfigurable Ge Metasurfaces Using Stencil Lithography for Mid‐Infrared Molecular Fingerprinting

Advanced Functional Materials, EarlyView.
Scalable stencil lithography enables resist‐free fabrication of high‐index Ge metasurfaces for mid‐infrared molecular fingerprinting. Reversible thermo‐optic tuning provides post‐fabrication spectral control for precise resonance–vibration mode alignment, enabling enhanced molecular fingerprinting of microplastic particles.
Shovasis Kumar Biswas, Samir Rosas, Wihan Adi, Aidana Beisenova, Vaishakh Unnikrishnan, Furkan Kuruoglu, Filiz Yesilkoy   +6 more
wiley   +1 more source

Wideband Channel Estimation and Prediction in Single-Carrier Wireless Systems

, 2005
—In this contribution wideband channel estimation and prediction designed for single-carrier wideband wireless communications systems are investigated. Specifically, the single-carrier wideband pilot signal received by the receiver is first converted to ...
Liu, W., Yang, L-L., Hanzo, L.
core   +1 more source

A Low-Profile and Wideband Unidirectional Antenna Using Bandwidth Enhanced Resonance-Based Reflector for Fifth Generation (5G) Systems Applications

IEEE Access, 2019
The previously proposed resonance-based reflector (RBR) antennas have the merits of wide impedance bandwidth, low-profile, and unidirectional pattern; however, their front-to-back ratio (FBR) bandwidths are narrow.
Bao-Jian Wen, Lin Peng, Xiao-Feng Li, Kun-Shan Mo, Xing Jiang, Si-Min Li   +5 more
doaj   +1 more source

Localization of water surface waves in a heterostructure channel with corrugated sidewalls

AIP Advances, 2021
This paper describes the fabrication of a water channel heterostructure by combining two types of periodic sidewalls with different duty ratios. This enables the manipulation and localization of water surface waves in bands that are traditionally ...
Jia-Yi Zhang, Ting Liu, Jia Tao, Ya-Xian Fan, Zhi-Yong Tao   +4 more
doaj   +1 more source