Zobrazeno 1 - 10
of 17 320
pro vyhledávání: '"Dual band"'
Autor:
Shahid Iqbal, Ahsan Noor, Naeem Ullah, Yasir Saifullah, Shehzad Ahmed, Muhammad Shemyal Nisar, Sai-Wai Wong
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Independent control of electromagnetic (EM) waves by metasurfaces for multiple tasks are highly desired and is the recent hot topic of research. In this work we contribute a polarization insensitive frequency multiplexed 2-bit coding metasur
Externí odkaz:
https://doaj.org/article/be6c06d04a48445f877963c618b74ad2
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In this study, a high-isolation dual-band (28/38 GHz) multiple-input–multiple-output (MIMO) antenna for 5G millimeter-wave indoor applications is presented. The antenna consists of two interconnected patches. The primary patch is connected
Externí odkaz:
https://doaj.org/article/6a0c40e3e9384adabba09ded19a7355c
Autor:
Gu Zhen, Xie Rensheng, Liu Haoyang, Liu Yiting, Wang Xiong, Zhang Hualiang, Gao Jianjun, Si Liming, Chen Shuqi, Ding Jun
Publikováno v:
Nanophotonics, Vol 13, Iss 20, Pp 3915-3924 (2024)
The significance of a cryptograph method lies in its ability to provide high fidelity, high security, and large capacity. The emergence of metasurface-empowered cryptography offers a promising alternative due to its unparalleled wavefront modulation
Externí odkaz:
https://doaj.org/article/e1411c54dfa44767b6c0b409e7f1a1f5
Autor:
Karol Dragowski, Mateusz Pasternak
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 70, Iss No 3, Pp 649-654 (2024)
The growing usage of wireless networks and the reduction of device sizes requires the search for new solutions in antenna technology. This study presents a direct-fed microstrip antenna, which is based on the Dragon Curve fractal and operates at two
Externí odkaz:
https://doaj.org/article/202906b21dbb40e0b2e7a2dba9af5a1d
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract This article proposes a dual mode dual-polarized antenna configuration for IRNSS and fifth generation (5G) applications, operating at a frequency of 3.5 GHz based on characteristic mode analysis (CMA), and aims to provide broadband dual-pola
Externí odkaz:
https://doaj.org/article/dfad867b2c3e4de9ab4af92300b8772c
Publikováno v:
Alexandria Engineering Journal, Vol 104, Iss , Pp 235-245 (2024)
This paper presents a single-fed Ku/Ka dual-band aperture-shared planar antenna array designed for satellite communication. The need to enhance data transmission speeds has driven the exploration of higher frequency bands, such as the Ku-band and Ka-
Externí odkaz:
https://doaj.org/article/74a451da27f8409e88d508601631d789
Autor:
Santhakumar G, Muthukumar R
Publikováno v:
Measurement Science Review, Vol 24, Iss 3, Pp 100-104 (2024)
New communication paradigms have emerged to make better use of the available wireless spectrum due to its scarcity. Millimeter wave high-frequency spectrum could offer a viable solution to the problem of spectrum scarcity. Millimeter wave devices and
Externí odkaz:
https://doaj.org/article/1ba604c9e1ce4e3ca28a49549433d1c1
Publikováno v:
ETRI Journal, Iss 3, Pp 413-420 (2024)
A dual-band bio-implantable compact antenna with a meander-line structure is presented. The proposed meander-line antenna resonates at the industrial, scientific, and medical (2.4 GHz) and wireless medical telemetry (1.4 GHz) bands. The meander-line
Externí odkaz:
https://doaj.org/article/6eb149e63a734f74be0f8555849859a0
Autor:
Kayhan Celik
Publikováno v:
ETRI Journal, Vol 46, Iss 2, Pp 218-226 (2024)
This paper presents a novel circular fractal ring monopole antenna for ultra-wideband (UWB) hardware with dual band-notched properties. The proposed antenna consists of four crescent-shaped nested rings, a tapered feeding line at the front of the die
Externí odkaz:
https://doaj.org/article/4bcbe1659fe246f1ba56eceba699e44b
Autor:
X. P. Dao, V. S. Nguyen, V. D. Tran, T. T. Vu, T. H. Nguyen, X. L. Dai, N. H. Trong, T. T. Linh
Publikováno v:
Radioengineering, Vol 33, Iss 1, Pp 213-221 (2024)
In this paper a very compact design of a dual-band band pass filter (D-BPF) using dual composite right-/left-handed (D-CRLH) and open-loop ring (OLR) resonators is presented. To overcome the frequency ratio limitations of D-CLRH resonators technique,
Externí odkaz:
https://doaj.org/article/deb10181e0124655a3f219e7af36530c