Results 71 to 80 of about 8,504 (267)
Deep Learning-Driven Beam-Steering for Dual-Polarized 28 GHz Antenna Arrays in 5G Wireless Networks
IEEE AccessThis study explores the development of a 28 GHz array antenna with beam-steering capability, consisting of four elements with dual linear polarization at ±45 degrees.
Siti Zainab M. Zainab Hamzah +5 more
doaj +1 more source
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein +4 more
wiley +1 more source
IET Microwaves, Antennas & PropagationThe present article proposes a novel hybrid approach for addressing the synthesis problem of rectangular planar arrays under multiple constraints, through joint optimization of the weight function and the improved grey wolf optimization (IGWO) algorithm.
Kui Tao +4 more
doaj +1 more source
A Review on Antenna Radiation Pattern Synthesis
IOSR Journal of Electronics and Communication Engineering, 2014 In recent communication systems side lobe level reduction has become one of the important issue. For applications like digital beam forming it is one of the important factor because it reduces the effect of interference arriving outside the main lobe. This reduction in the interference increases the capacity of the communication systems.
Meenakshi L Rathod, Dr. A Meera
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Advanced Functional Materials, EarlyView.Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou +5 more
wiley +1 more source
Millimeter‐wave end‐fire dual‐polarized frequency scanning antenna using LTCC technology
Electronics LettersThis letter proposes a millimeter‐wave dual‐polarized (DP) end‐fire frequency scanning antenna utilizing low temperature co‐fired ceramic (LTCC) technology.
Pengfei Yu +5 more
doaj +1 more source
A Wideband End-Fire Conformal Vivaldi Antenna Array Mounted on a Dielectric Cone
International Journal of Antennas and Propagation, 2016 The characteristics of a novel antipodal Vivaldi antenna array mounted on a dielectric cone are presented. By employing antipodal Vivaldi antenna element, the antenna array shows ultrawide bandwidth and end-fire radiation characteristics. Our simulations
Zengrui Li +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A compostable PGS soft surgical robot with interchangeable modules integrates transient Mo tactile and Si thermal sensors for dual feedback. The device preserves its function after clinical‐grade sterilization, demonstrates stable actuation and cardiac tissue grasping with real‐time in vivo pulsatile monitoring, and biodegrades post‐use with soil‐safe,
Minseong Chae +27 more
wiley +1 more source
Theory of v.o.r. antenna radiation patterns
Electronics Letters, 1971 The radiation field produced by v.o.r. antennas consisting of Alford loops located above a circular conducting ground plane is investigated theoretically and experimentally. Geometrical theory of diffraction is applied to obtain the theoretical expressions for the far field produced by such an antenna.
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