Results 41 to 50 of about 2,644 (218)

Design and optimization of Frequency Selective Surfaces (FSS) [PDF]

, 2019
The analysis method for Frequency Selective Surfaces (FSS), the spectral-domain Method of Moments (MoM) is improved to be applicable to normal incidence. A more efficient optimization algorithm, Differential Evolution Strategy (DES) is proposed to optimize the standard, non-irregular FSS unit-cell and dielectric properties.
openaire   +2 more sources

Absorptive/Transmissive Frequency Selective Surface With Wide Absorption Band

IEEE Access, 2019
An absorptive/transmissive frequency selective surface (ATFSS) with absorption bands at both sides of a passband is presented. Equivalent circuits of the ATFSS that consists of a lossy frequency selective surface (FSS) and a lossless FSS were modeled. To
Qingxin Guo, Jianxun Su, Zengrui Li, Lamar Y. Yang, Jiming Song   +4 more
doaj   +1 more source

Preparation of knitted fabric-based frequency selective surface and its frequency response characteristic

Xi'an Gongcheng Daxue xuebao, 2022
To study the frequency response characteristics of knitted fabric-based frequency selective surface (FSS), high-pass knitted fabric-based FSS were designed and prepared. The electromagnetic transmission characteristics were tested in a microwave anechoic
YANG Zhuli, TANG Wan, BAI Shunmei, GUAN Fuwang, LI Dan, QIU Yiping   +5 more
doaj   +1 more source

Influence of Flexible and Textile Substrates on Frequency-Selective Surfaces (FSS)

Sensors
Frequency-selective surfaces (FSS) are two-dimensional geometric structures made of conductive materials that selectively transmit or reflect electromagnetic waves. In this paper, flexible FSS made on textile and film substrates is presented and compared to show the effect of the texture associated with the type of substrate on the shielding properties.
Olga Rac-Rumijowska, Piotr Pokryszka, Tomasz Rybicki, Patrycja Suchorska-Wozniak, Maksymilian Wozniak, Katarzyna Kaczkowska, Iwona Karbownik   +6 more
openaire   +3 more sources

Active Frequency Selective Surface With Wide Reconfigurable Passband

IEEE Access, 2019
This paper presents an active frequency selective surface (AFSS) with a wide reconfigurable passband. The tuning mechanism was investigated with an equivalent circuit which consists of a parallel L-C resonant circuit and a series L-C resonant circuit.
Qingxin Guo, Zengrui Li, Jianxun Su, Jiming Song, Lamar Y. Yang   +4 more
doaj   +1 more source

Reconfigurable Terahertz Moiré Frequency Selective Surface Based on Additive Manufacturing Technology

Applied Sciences, 2023
We designed and fabricated a terahertz (THz) frequency selective surface (FSS) based on two distinct additive manufacturing technologies, namely, printable electronics (PE) and three-dimensional (3D) printing.
Redwan Ahmad, Mariia Zhuldybina, Xavier Ropagnol, Ngoc Duc Trinh, Chloé Bois, Juan Schneider, François Blanchard   +6 more
doaj   +1 more source

Two-Dimensional Analogies to Frequency-Selective Surfaces (FSS) on the Graphene Sheet [PDF]

Plasmonics, 2015
In this paper, we propose that two-dimensional analogies to frequency-selective surfaces (FSS) can be achieved on graphene surfaces based on transformation optics. The analogies to representative FSS structures, including the anti-reflecting coating (ARC) and the high-reflecting coating (Bragg reflector), have been investigated through both analytical ...
Zhu, Bofeng, Ren, Guobin, Cryan, Martin J, Gao, Yixiao, Lian, Yudong, Wang, Jing, Wan, Chenglong, Jian, Shuisheng   +7 more
openaire   +3 more sources

Muscle Control of an Extra Robotic Digit

Advanced Robotics Research, EarlyView.
This study compares muscle‐ and movement‐based control for operating a supernumerary robotic thumb. While movement control performs better in the proposed tasks, muscle‐based (EMG) control promotes broader motor learning. The results highlight the promise and challenges of using biosignals for human augmentation, offering new insights into intuitive ...
Julien Russ, Lucy Dowdall, Francesco Cenciarelli, Kitty Goodridge, Mabel Ziman, Hristo Dimitrov, Danielle Clode, Tamar R. Makin   +7 more
wiley   +1 more source

A dual tuned Complementary Structure Frequency Selective surface for WLAN applications

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
A single substrate layer double metallic plane frequency selective surface (FSS) is designed with miniaturized electrical elements and two tunable pass-bands enabling Wireless Local Area Network applications. Each FSS periodic cell consists of a metallic
Arup Ray, Manisha Kahar, Sushanta Biswas, Debasree Sarkar, Partha Pratim Sarkar   +4 more
doaj   +1 more source

Deep Learning Prediction of Surface Roughness in Multi‐Stage Microneedle Fabrication: A Long Short‐Term Memory‐Recurrent Neural Network Approach

Advanced Intelligent Discovery, EarlyView.
A sequential deep learning framework is developed to model surface roughness progression in multi‐stage microneedle fabrication. Using real‐world experimental data from 3D printing, molding, and casting stages, an long short‐term memory‐based recurrent neural network captures the cumulative influence of geometric parameters and intermediate outputs ...
Abdollah Ahmadpour, Sara Soltanabadi Farshi, Tuanna Ozcan, Amir Mohammad Ketabchi, Alper Kiraz, Savas Tasoglu   +5 more
wiley   +1 more source