Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Kyung‐Young Jung"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract This study presents a circularly-polarized (CP) planar monopole antenna designed for ultra-wideband (UWB) applications using characteristic mode analysis (CMA). Initially, a planar monopole antenna with a crescent moon-shaped radiator and a
Externí odkaz:
https://doaj.org/article/fe5bc24e913a4c75aad7b9480df0faad
Publikováno v:
Alexandria Engineering Journal, Vol 111, Iss , Pp 482-490 (2025)
This paper presents a novel approach to enhancing the isolation of adaptive array antennas. The primary focus is on overcoming the limitations of monopole antennas in adaptive array antennas, specifically addressing the challenges posed by mutual cou
Externí odkaz:
https://doaj.org/article/047ef620d6654da690586f8cb6de0641
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 2, Pp 145-150 (2024)
The demand for wideband circularly polarized (CP) antennas in wireless communication applications has been increasing, given that it offers reliable signals with reduced interference. In particular, planar monopole antennas are a popular choice for u
Externí odkaz:
https://doaj.org/article/f36c90ae9eee4d2b8f08a804412c8cab
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 3, Pp 327-329 (2024)
In recent years, ultra-wideband (UWB) technology has garnered significant attention for enabling exceptional precision in applications, such as positioning and radar systems. This letter presents a novel coplanar waveguide-fed circularly polarized sl
Externí odkaz:
https://doaj.org/article/e65fd795b2f64701827c2f8d3c536008
Publikováno v:
IEEE Access, Vol 12, Pp 146359-146365 (2024)
The deployment of Ka-band radar necessitates addressing increased losses due to rain and free-space propagation, in addition to achieving low sidelobe levels (SLL). Substrate integrated waveguide (SIW) slot antennas, with their high-power handling ca
Externí odkaz:
https://doaj.org/article/a61c6a87502d4372b66418cbd7140a3d
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 23, Iss 5, Pp 423-428 (2023)
The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic wave analysis of complex media. Conventional FDTD analyses of very thin two-dimensional (2D) dispersive materials require overwhelming computing resources be
Externí odkaz:
https://doaj.org/article/bc0c87c5fbd5435d826a94628c54bdb8
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 23, Iss 6, Pp 530-532 (2023)
In this work, we propose an efficient finite-difference time-domain (FDTD) simulation technique for the electromagnetic (EM) wave analysis of the Faraday rotation angle in the ionosphere. For this purpose, we first model the physical ionosphere as a
Externí odkaz:
https://doaj.org/article/16d47f6df8c247378ae85a7f9aa4bed5
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 23, Iss 3, Pp 275-282 (2023)
Repeaters have been widely used to improve communication quality and extend the coverage areas of wireless communication systems. However, mutual coupling between the Tx and Rx antennas significantly deteriorates the performance of repeater systems.
Externí odkaz:
https://doaj.org/article/d201909f3a1b4642bdaa923e3025b843
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 23, Iss 2, Pp 180-187 (2023)
External partial discharge (PD) sensors for the ultra-high frequency (UHF) method are widely used to detect the PD signals in high-voltage power equipment for ease of installation and maintenance. However, conventional external PD sensors detect not
Externí odkaz:
https://doaj.org/article/239157d5ebad4606a0b9948f774e1da1
Autor:
Junmo Choi, Jaewoo Kim, Younggun Ji, Seongju Lee, Jungran Lee, Byunggil Yu, Seulgi Park, Myungho Kim, Kyung-Young Jung
Publikováno v:
IEEE Access, Vol 11, Pp 135846-135854 (2023)
We propose a $2\times2$ patch array filtenna specifically designed for radio altimeter applications with significant suppression of unwanted adjacent 5G spectrum signals. The patch radiator is carefully selected to meet the radiation requirement of r
Externí odkaz:
https://doaj.org/article/3ec99ba40bf845ab82b5d39822c3fd8b