Results 61 to 70 of about 21,674 (216)

Design of a Flexible Cylindrical Antenna with Rotatable Curved Frequency Selective Surface for Omnidirectional High-Gain Applications

International Journal of Antennas and Propagation, 2023
In this paper, a high-gain flexible cylindrical antenna with rotatable curved frequency selective surface (FSS) is presented, which is designed for the 2.4 GHz industrial scientific medical (ISM) band.
Hua Jing, Ge He, Shengyao Wang
doaj   +1 more source

Study of 5.8 GHz Band-Stop Frequency Selective Surface (FSS)

International Journal of Integrated Engineering, 2019
This paper presents the study of 5.8 GHz frequency selective surface (FSS) acts as a band stop to eliminate unwanted radiation signal at 5.8GHz. The FSS was designed using computer simulation technology (CST) Microwave Studio software. The paper shows the comparison of square loop, octagon loop and hexagon loop of Band stop FSS (BSFSS) performance at 5.
Hong, T. Y., Lee, Y. S., Wee, F. H., You, Y. K., A. Karim, M. N., Ramli, N. H., Gan, Hong Seng, Jamlos, M. A.   +7 more
openaire   +2 more sources

Multifaceted Behavior and Versatility Features of Ferritic Stainless Steels, Part II: Investigating Electromagnetic, Mechanical, and Corrosion Behavior

steel research international, EarlyView.
This review's second part details the mechanical, corrosion, and electromagnetic behaviors of FSSs. It integrates the foundational microstructure (texture/defects/precipitates) and processing effects from Part I to establish and analyze complex property–property interrelationships critical for high‐performance applications.
Shahab Bazri, Carlo Mapelli, Davide Mombelli   +2 more
wiley   +1 more source

One‐more‐vertex Next‐Event Estimation with Hierarchical Geometry Sampling

Computer Graphics Forum, EarlyView.
Abstract Robust next‐event estimation (NEE) remains a challenge in scenes characterized by sparse or small‐scale geometry where indirect illumination is the primary transport mechanism. In these scenes, traditional path construction, which relies on local directional sampling, often fails to find intersections with the sparse geometry, and standard NEE
Jorge Garcia‐Pueyo, Nestor Monzon, Adrian Jarabo, Adolfo Muñoz   +3 more
wiley   +1 more source

Modelling of ultra‐wide stop‐band frequency‐selective surface to enhance the gain of a UWB antenna

IET Microwaves, Antennas & Propagation, 2019
Here, an ultra‐wide stop‐band single‐layer frequency‐selective surface (FSS) with high‐incidence angle independence has been proposed to enhance the gain of an ultra‐wideband (UWB) monopole antenna.
Priyanka Das, Kaushik Mandal
doaj   +1 more source

Survey: Competition in Higher Education

Journal of Economic Surveys, EarlyView.
ABSTRACT This paper provides a bibliometric mapping and economic interpretation of the literature on competition in higher education. Drawing on 1470 Scopus‐indexed articles (1961–2023), we combine descriptive bibliometrics, a keyword co‐occurrence network, and a multiple correspondence analysis (MCA) of harmonized author‐assigned keywords with a ...
Amjad Aun
wiley   +1 more source

A Novel High Suppression Multilayer Frequency‐Selective Surface Based on Hexagonal Grids

IET Microwaves, Antennas & Propagation
This paper addresses the issue of achieving excellent overall performance for frequency selective surface (FSS) radomes. A dual‐layer frequency selective surface based on a hexagonal structure is proposed, which offers broadband suppression, roll‐off ...
Boyang Wang, Xuewu Cui, Wei Yang, Lei Han, Suli Guo   +4 more
doaj   +1 more source

Frequency Selective Surface (FSS) radiofrequency shield for low-field MRI

Journal of Magnetic Resonance
In this paper, we propose Frequency Selective Surface (FSS) as an radiofrequency (RF) shield for coils in portable MRI systems. The new approach aims to obtain enhancement of coil sensitivity compared to traditional copper shields to improve the signal-to-noise ratio (SNR).
Junqi Yang, Meena Rajendran, Minxuan Xu, Xudong Chen, Wenwei Yu, Shaoying Huang   +5 more
openaire   +1 more source

A Novel Miniaturized Single-Layer Frequency Selective Surface With Triband Characteristics

International Journal of Antennas and Propagation
This paper presents a single-layer triband frequency selective surface (FSS) for spatial filtering in wireless communication applications. The via-less convoluted geometry is adopted in the unit cell design to achieve a miniaturized profile of 0.048λ0 ...
Sangeetha Subbaraj, Shini Ramadoss, Sandeep Kumar Palaniswamy   +2 more
doaj   +1 more source

Two‐Stage Power Management for Triboelectric Nanogenerators: Toward Reliable and Efficient Self‐Powered Systems

Safety Science and Technology, Volume 1, Issue 4, December 2026.
This review systematically outlines two‐stage power management circuits for TENGs, integrating AC–DC and DC–DC conversion to overcome high impedance and unstable output. It highlights strategies for efficient energy extraction and stable power delivery, enabling the development of reliable self‐powered systems for safety monitoring and applications in ...
Jiaxin Hu, Zhiyong Zhang, Haiyang Shao, Tianyu Shi, Baoling Yuan, Ming‐Lai Fu   +5 more
wiley   +1 more source