Results 41 to 50 of about 2,996 (222)
Dipole‐Quadrupole Model and Multipole Analysis of Resonant Membrane Metasurfaces
Laser &Photonics Reviews, EarlyView.Membrane metasurfaces, arrays of holes in a dielectric membrane, are appealing because they require no substrate and allow access to resonant near‐fields. However, developing a comprehensive theoretical description for them remains challenging. We introduce a semi‐analytical dipole‐quadrupole approach to analyze their resonant spectra at arbitrary ...
Izzatjon Allayarov +2 more
wiley +1 more source
Thermal performance of residential house using interlocking compressed earth brick (ICEB) as an alternative wall material [PDF]
, 2012 Buildings are usually designed and constructed without the concern of its impact to the environment and human comfort. Most contributes to poor thermal performance and high energy consumption.
Razman, Ruzaimah
core
Tunable Reflectarray Cell for Wide Angle Beam-Steering Radar Applications
Journal of Electrical and Computer Engineering, 2013 An electronically tunable reflectarray element is proposed in this work to design beam-steering antennas useful for radar applications. A reduced size reflectarray unit cell is properly synthesized in order to extend the antenna beam scanning ...
F. Venneri, S. Costanzo, G. Di Massa
doaj +1 more source
Multi-Beam Circular Polarized Reflectarray on Parabolic Reflector by Variable Rotation Technique
Applied Sciences, 2019 Multi-beams antennas are currently being used for direct broadcast satellite, personal communication satellite, military communication satellite, and high-speed internet applications.
Álvaro Somolinos +3 more
doaj +1 more source
Sub‐THz Multifunctional Metasurfaces for Independent Transmission or Reflection Phase Manipulation
Advanced Optical Materials, Volume 14, Issue 4, 27 January 2026.This article presents a rigorous analysis, design, and characterization of a novel sub‐THz metalens and reflective metasurface. Unlike bulky optical systems, the proposed thin, planar metasurface enables dual‐band full‐space wavefront control, via low‐loss transmission and reflection phase tuning, offering compact integration and improved ...
Bilal Ouardi +5 more
wiley +1 more source
Analysis and Design of Reflectarray Antennas Based on Delay Lines: A Filter Perspective
IEEE Access, 2020 The analysis and design of reflectarray (RA) antennas based in delay lines is introduced for the first time from a filter perspective. To this purpose, each unit-cell of the RA is considered as a network composed of two ports, one being the delay line ...
Jiawei Zang +4 more
doaj +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2022 Introduction. Duplex satellite communication is commonly arranged using two spaced frequency bands, with one band receiving and the other band transmitting signals to a satellite.
S. V. Polenga +9 more
doaj +1 more source
A Scalable and Integrated Reconfigurable Intelligent Surface
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram +6 more
wiley +1 more source
Robot creativity: humanlike behaviour in the robot-robot interaction [PDF]
, 2020 Artificial Intelligence development is mainly directed toward imitating human reasoning and performing different tasks. For that purpose, related software and program solution where artificial intelligence is used have mostly thinking abilities. However,
Md Tomari, Mohd Razali +1 more
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Utilization of PEFB reinforced box waste coated super-hydrophobic coating for shoe sole applications [PDF]
, 2020 This paper presents the utilization of palm empty fruit bunches (PEFB) reinforced with box waste for shoe sole applications. The main objective of this study is to determine the optimum composition of PEFB reinforced with box waste for shoe sole ...
Chow, Li Kien +2 more
core +1 more source