Results 31 to 40 of about 839,323 (288)

Low sidelobe planar electrically large sparse array antenna with element number reduction based on genetic algorithm

IET Microwaves, Antennas & Propagation
Conventionally, both electrically larger (EL) arrays and sparse arrays offer the advantage of element number reduction but disadvantage of high sidelobe levels.
Yangkun Zhu, Wenyu Ma, Chuang Wang, Wenquan Cao   +3 more
doaj   +1 more source

Design of a dual‐CP gap waveguide fed aperture array antenna

IET Microwaves, Antennas & Propagation, 2023
A slot array antenna with dual‐circular polarisation (CP) is presented in this paper. To overcome the fabrication and loss challenges in mm‐wave frequencies, the gap waveguide technique is utilised. The right and left hand circular polarisation (RHCP and
Davoud Zarifi, Ali Farahbakhsh, Ashraf Uz Zaman   +2 more
doaj   +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

Design of planar inverted-F antennas (PIFA) for multiband wireless applications [PDF]

, 2009
A small three bands printed inverted-F antenna with independently controlling the resonant frequency is presented. The proposed antenna consists of two arms supported by shorting walls fed by 50 Ω microstrip transmission line and a ground plane.
AbuTarboush, HF, Nilavalan, R., Budimir, D., D. Budimir, Nilavalan, R, Al-Raweshidy, H.S., Budimir, D, AbuTarboush, H.F., H. F. AbuTarboush, Al-Raweshidy, H, R. Nilavalan, H. S. Al-Raweshidy   +11 more
core   +1 more source

MM-Wave Phased Array Quasi-Yagi Antenna for the Upcoming 5G Cellular Communications

Applied Sciences, 2019
The focus of this manuscript was to propose a new phased array antenna design for the fifth generation (5G) mobile platforms. Eight elements of compact Quasi-Yagi antennas were placed on the top portion of smartphone printed circuits board (PCB) to form ...
Naser Ojaroudi Parchin, Mohammad Alibakhshikenari, Haleh Jahanbakhsh Basherlou, Raed A. Abd-Alhameed, Jonathan Rodriguez, Ernesto Limiti   +5 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

System Concept of a Compact Multi-Antenna GNSS Receiver [PDF]

, 2012
This paper presents the conceptual design of a compact 2x2 array receiver for GNSS applications. Besides mere miniaturization, the goal of this work is also investigation on novel techniques for coping with the strong mutual coupling imposed in ...
Hein, Matthias, Kappen, Götz Caspar, Irteza, Safwat, Stephan, Ralf, Hein, M. A., Antreich, Felix, Khan, M. A., Sgammini, Matteo, Kappen, Götz, Kurz, Lothar, Basta, Nikola, Caizzone, Stefano, Dreher, A., Noll, Tobias G., Irteza, S., Richter, Andre, Dreher, Achim, Schäfer, Eric, Stephan, R., Schafer, E., Khan, Muhammad A., Richter, A.   +21 more
core  

A high‐power, high‐isolation, dual‐polarised planar phased array antenna

IET Microwaves, Antennas & Propagation
A high‐power, high‐isolation, dual‐polarised planar phased array antenna is presented. Based on a multi‐layer microstrip structure, two sets of polarisation ports are fed through orthogonal slot coupling, achieving high isolation and low cross ...
Junxing Jiang, Shaoqiu Xiao, Yiming Zhang, Shaoyi Xie   +3 more
doaj   +1 more source

Fabrication Routes for Ionic Conducting Fiber Strain Sensors

Advanced Engineering Materials, EarlyView.
Ionic conducting fiber strain sensors (ICFSs) offer compliant, textile‐integrable sensing. Thus far, the commercialization of ICFSs has been constrained by fiber fabrication routes. This review provides a fabrication‐centric analysis of ICFSs correlating processing strategies with material properties and scalability.
Leo John Kershaw, Zhanhong Yang, Anne Ladegaard Skov, Magdalena Skowyra   +3 more
wiley   +1 more source

Planar Antenna Arrays Beamforming Using Various Optimization Algorithms

IEEE Access, 2023
Due to the importance of beamforming in improving the communication systems performance, this paper presents a novel study of beamforming of planar antenna arrays (PAAs) utilizing the Improved Grey Wolf Optimization (I-GWO) algorithm with the goal of ...
Nancy Ghattas, Atef M. Ghuniem, Abdelazeem A. Abdelsalam, Ahmed Magdy   +3 more
doaj   +1 more source