Results 1 to 10 of about 9,240 (223)

Design and Analysis of Dual-Polarized Frequency-Selective Metasurface for X-Band Notch Applications [PDF]

Sensors
This paper presents a miniaturized, polarization-insensitive frequency-selective metasurface (FSMS) with stopband behavior for RF shielding applications. The FSMS is designed to suppress communication at 10 GHz frequency in the X-band.
Muhammad Idrees, Sai-Wai Wong, Yejun He
doaj   +2 more sources

Independently Tunable Closely Spaced Triband Frequency Selective Surface Unit Cell Using the Third Resonant Mode of Split Ring Slots [PDF]

IEEE Access, 2021
In this paper, a tunable triband frequency selective surface unit cell based on varactor-loaded split ring slots is presented. By using the third resonant mode, a considerable mutual coupling reduction between adjacent ring slots is obtained ensuring both close band response as well as independent band tuning.
Henry Fabian-Gongora, Alexander E. Martynyuk, Jorge Rodriguez-Cuevas, Lourdes Martinez-Lopez, Rosalba Martinez-Lopez, Jose I. Martinez-Lopez   +5 more
openaire   +2 more sources

Enhancing meta slot space space wavelength to solve blocking case in elastic optical networks

Measurement: Sensors, 2023
Elastic optical networks (EONs) are a promising technology for the development of flexible and wideband communication systems. The (FSU) frequency slot unit concept is used in this technology to define the bandwidth unit in the frequency domain.
Mustafa Taha Hussein Al-Musawi, Mustafa N. Mnati, Aeizaal Azman A. Wahab   +2 more
doaj   +1 more source

Miniaturized Folded-Slot CubeSat MIMO Antenna Design with Pattern Diversity

Sensors, 2022
In this paper, a folded slot-based multiple-input–multiple-output (MIMO) antenna design for Cube Satellite (CubeSat) applications is presented for the ultra-high frequency (UHF) band.
Rifaqat Hussain, Khaled Aljaloud, Abida Shaheen Rao, Abdullah M. AlGarni, Ali H. Alqahtani, Abdul Aziz, Yosef T. Aladadi, Saad I. Alhuwaimel, Niamat Hussain   +8 more
doaj   +1 more source

Compact Sub-6-GHz Four-Element MIMO Slot Antenna System for 5G Tablet Devices

IEEE Access, 2020
A sub-6-GHz four-element multi-input multi-output (MIMO) slot antenna system was proposed in this study for fifth-generation (5G) tablet computers, where each antenna element was constructed using a slot structure.
Shu-Chuan Chen, Lung-Chi Chou, Chung-I. G. Hsu, Sheng-Min Li   +3 more
doaj   +1 more source

In‐band radar cross‐section reduction of the slot array antennas by RAM‐based frequency selective surfaces

IET Microwaves, Antennas & Propagation, 2021
A method for reducing radar cross‐section (RCS) of the slot array antenna by utilising the radar absorbing material, while preserving the radiation performance simultaneously, is proposed and discussed.
Bagher Noorbakhsh, Ali Abdolali, Mahdi Janforooz   +2 more
doaj   +1 more source

Advanced Considerations Concerning Impact of Applied Call Admission Control Mechanisms on Traffic Characteristics in Elastic Optical Network Nodes

Journal of Telecommunications and Information Technology, 2023
Over the past few years, a significant increase in network traffic volumes has been observed. The ever growing bandwidth demands mean that a reliable and optimum service level needs to be ensured in communication systems for specific traffic categories.
Mariusz Głąbowski, Maciej Sobieraj
doaj   +1 more source

Synthesis of a polarisation‐rotating surface with reflective filtering response based on orthogonally inserted coupled slot‐lines

IET Microwaves, Antennas & Propagation, 2023
In this article, a three‐dimensional polarisation‐rotation surface (PRS) with reflective filtering response based on two orthogonally inserted coupled slot‐line is investigated, which can reflect a vertically/horizontally polarised incident wave by 90 ...
Tao Wei, Bo Li, Lei Zhu, Chong‐Hu Cheng   +3 more
doaj   +1 more source

Double-Layered Frequency Selective Surface Superstrate Using Ring Slot and Dipole-Shaped Unit Cell Structure

Journal of electromagnetic engineering and science, 2010
In this paper, a double-layered frequency selective surface(FSS) superstrate was built and tested. The unit cell of the proposed FSS consists of a ring slot and a dipole-shaped structure and shows a complementary frequency response. Each unit cell is printed on two sides of a substrate.
Hong-Min Lee, Yong-Jin Kim
openaire   +2 more sources

A Miniaturized and High Gain Double-Slot Vivaldi Antenna Using Wideband Index-Near-Zero Metasurface

IEEE Access, 2018
In this paper, a wideband, miniaturized, and high gain double-slot Vivaldi antenna is proposed. First, a corner cutting technique is adopted to broaden the frequency band.
Shuangshuang Zhu, Haiwen Liu, Pin Wen, Lixia Du, Jiafeng Zhou   +4 more
doaj   +1 more source