Results 71 to 80 of about 3,731 (269)

High-Order Quad-Band Bandpass FSSs With Multiple TZs for EMI Protection in WPT Scenarios

IEEE Open Journal of Antennas and Propagation
A class of frequency-selective surfaces (FSSs) with high-order quad-band bandpass filtering response is reported. Its intended application is electromagnetic-interference (EMI) suppression in multiband/ multi-frequency wireless power transmission (WPT ...
Runze Li, Li Yang, Shiyan Wang, Roberto Gomez-Garcia   +3 more
doaj   +1 more source

Transmission Lines Impedance Fitting Using Analytical Impedance Equation and Frequency Response Analysis

, 2022
Rational function approximation is commonly used to fit the transmission line impedance over a wide frequency range. Nevertheless, it is computationally costly and challenging to implement in practical applications due to the high number of ...
Muhammad Khalid, Hosam Alharbi, Mohammad Abido   +2 more
core   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Investigating broadband filtering power amplifier using multi-mode resonator-based bandpass filter

Results in Engineering
This paper presents an innovative approach to addressing the challenges of multifunctional and broadband sub-6 GHz applications by proposing a high-efficiency, wideband filtering power amplifier (FPA) with superior filtering selectivity.
Mohamed Boumalkha, Ahmed Gamal Abdellatif, Ahmed S.I. Amar, Mohammed Lahsaini, Amir Almslmany, Shuja Ansari, Mohammed Alammar, Mahmoud A. Shawky   +7 more
doaj   +1 more source

Transmission lines loaded with pairs of stepped impedance resonators

, 2016
Differential techniques are widely used in communication and sensor systems, as these techniques have been shown to improve the performance. This paper shows how differential sensing of permittivity can be conducted in a simple way. For that purpose, a microstrip line loaded with a pair of stepped-impedance resonators is used in two different resonator
Naqui Garolera, Jordi, Damm, Christian, Wiens, Alex, Jakoby, Rolf, Su, Lijuan, Mata Contreras, Francisco Javier, Martín, Ferran,   +6 more
openaire   +1 more source

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

Advanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle, María Ángeles Navacerrada, Johan Christensen, Carlos González   +3 more
wiley   +1 more source

A New Class of High-Selectivity Bandpass Filters With Constant Bandwidth and 5:1 Bandwidth Tuning Ratio

IEEE Access
This paper presents a design for compact bandpass filters (BPFs) that feature high selectivity. This high selectivity is achieved through the use of open-/short-circuited coupled-line segments at the filter’s input and output and a pair of ...
Photos Vryonides, Salman Arain, Abdul Quddious, Dimitra Psychogiou, Symeon Nikolaou   +4 more
doaj   +1 more source

The UMTS Diplexer Design Using the Anti-Parallel Coupled Lines Loaded with a Stepped Impedance Resonator

, 2012
[[abstract]]We present a novel UMTS diplexer design using the filters of antiparallel-coupled lines structure loaded with a stepped impedance microstrip resonator. The diplexer is composed of two filters.
Ho, Min-Hua; Lin, Wei-Chen
core  

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Arcing High Impedance Fault Detection Using Real Coded Genetic Algorithm

, 2007
Safety and reliability are two of the most important aspects of electric power supply systems. Sensitivity and robustness to detect and isolate faults can influence the safety and reliability of such systems.
Zamanan, N., Sykulski, J.K., Al-Othman, A.K.   +2 more
core