Results 241 to 250 of about 10,033,418 (302)
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source
An Active Annular Ring Frequency Selective Surface [PDF]
IEEE Transactions on Antennas and Propagation, 2011 Offering good performance in terms of all polarizations affected and good angular stability, the ring element is a popular choice in frequency selective surface (FSS) designs.
Taylor Paul +2 more
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A Tri-Band Frequency-Selective Surface
Journal of Electromagnetic Waves and Applications, 2021A novel low-profile tri-band bandpass frequency-selective surface (FSS) is proposed in this paper.
Mohammed Yakoob Siyal +2 more
exaly +4 more sources
An Active Square Loop Frequency Selective Surface
IEEE Microwave and Wireless Components Letters, 1993 An active frequency selective surface incorporating PIN diodes as switches is discussed. Waveguide simulation studies show that the frequency response of the surface can be electronically switched from that of a reflecting structure to a transmitting ...
R J Langley
exaly +2 more sources
Loaded-frequency selective surface
Frontiers of Electrical and Electronic Engineering in China, 2005AbstractIn this paper a new frequency‐selective surface (FSS) with loadings, is introduced and analyzed using period moments methods. The simulated results show that FSS may operate in different bands and especially generate a large reduction in the resonant frequency for a fixed unit‐cell size through different loadings.
Qiang Gao +3 more
openaire +1 more source
Miniaturized frequency selective surface and broadband frequency selective surface design
2016 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2016This paper presents the results of our research in the field of frequency selective surface in recent years. Aiming at the traditional passive frequency selective surface (FSS) in this paper, we mainly do two aspects of research work, which is the research of the small frequency selective surface and the research of the ultra wide band frequency ...
Qun Wu +6 more
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Design of a Frequency-Tunable Frequency-Selective Surface with High-Selectivity
2020 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2020In this paper, a novel two-layered tunable Frequency-Selective Surface (FSS) with high-selectivity is presented. GaAs flip-chip varactors are also introduced in each unit-cell to achieve the frequency tunable capability and meanwhile maintaining lower insertion loss.
Wenbo Zhao +5 more
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Conformal frequency selective surfaces design
2016 24th Signal Processing and Communication Application Conference (SIU), 2016In this study a conformal frequency selective surface has been proposed for 5.8GHz frequency band and compared with a planer array frequency selective surface in the same sizes. A satisfactory performance has been obtained and a negligible difference has been obtained in terms of frequency and bandwidth when compared to the planer one.
Cagla Metin +2 more
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Analysis of Curved Frequency Selective Surfaces
2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007This article presents the full-wave analysis of frequency selective surfaces (FSS) embedded in a multilayer spherical supporting structure. The FSS are composed of circular ring elements because of its good polarisation properties and insensitivity of the resonant frequency on the angle of the incident plane wave.
Šipuš, Zvonimir +2 more
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