Zobrazeno 1 - 10
of 494
pro vyhledávání: '"Kwon, Do Hoon"'
A design methodology for planar loaded antenna arrays is proposed to synthesize a perfect anomalous reflection into an arbitrary direction by optimizing the scattering characteristics of passively loaded array antennas. It is based on efficient and a
Externí odkaz:
http://arxiv.org/abs/2312.04441
Autor:
Jeon, Hong-Bae, Kim, Soo-Min, Moon, Hyung-Joo, Kwon, Do-Hoon, Lee, Joon-Woo, Chung, Jong-Moon, Han, Sang-Kook, Chae, Chan-Byoung, Alouini, Mohamed-Slim
Numerous researchers have studied innovations in future sixth-generation (6G) wireless communications. Indeed, a critical issue that has emerged is to contend with society's insatiable demand for high data rates and massive 6G connectivity. Some scho
Externí odkaz:
http://arxiv.org/abs/2209.07674
Reconfigurable reflectors have a significant potential in future telecommunication systems, and approaches to the design and realization of full and tunable reflection control are now actively studied. Reflectarrays, being the classical approach to r
Externí odkaz:
http://arxiv.org/abs/2202.09029
Publikováno v:
In Energy Reports December 2024 12:529-543
Autor:
Kwon, Do-Hoon, Kim, Youngjin
High-voltage direct-current (HVDC) systems for constant or intermittent power delivery have recently been developed further to support grid frequency regulation (GFR). This paper proposes a new control strategy for a line-commutated converter-based (
Externí odkaz:
http://arxiv.org/abs/2012.07265
Autor:
Jeon, Hong-Bae, Moon, Hyung-Joo, Kim, Soo-Min, Kwon, Do-Hoon, Lee, Joon-Woo, Han, Sang-Kook, Chae, Chan-Byoung
In this paper, we investigate video signal transmission through an FPGA-based free-space optical (FSO) communication system prototype. We use a channel emulator that models the turbulence, scintillation, and power attenuation of the FSO channel and t
Externí odkaz:
http://arxiv.org/abs/2005.06954
Autor:
Pitilakis, Alexandros, Tsilipakos, Odysseas, Liu, Fu, Kossifos, Kypros M., Tasolamprou, Anna C., Kwon, Do-Hoon, Mirmoosa, Mohammad Sajjad, Manessis, Dionysios, Kantartzis, Nikolaos V., Liaskos, Christos, Antoniades, Marco A., Georgiou, Julius, Soukoulis, Costas M., Kafesaki, Maria, Tretyakov, Sergei A.
Publikováno v:
IEEE Trans. Antennas Propag., vol. 69, no. 3, pp. 1440-1454, March 2021
In this paper we present the theoretical considerations and the design evolution of a proof-of-concept reconfigurable metasurface, primarily used as a tunable microwave absorber, but also as a wavefront manipulation and polarization conversion device
Externí odkaz:
http://arxiv.org/abs/2003.08654
Publikováno v:
In Pharmacological Research October 2023 196
Autor:
Liu, Fu, Tsilipakos, Odysseas, Wang, Xuchen, Pitilakis, Alexandros, Tasolamprou, Anna C., Mirmoosa, Mohammad Sajjad, Kwon, Do-Hoon, Kossifos, Kypros, Georgiou, Julius, Kafesaki, Maria, Soukoulis, Costas M., Tretyakov, Sergei A.
Publikováno v:
12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), Espoo, Finland, 2018, pp. 260-262
We thoroughly investigate the electromagnetic response of intelligent functional metasurfaces. We study two distinct designs operating at different frequency regimes, namely, a switch-fabric-based design for GHz frequencies and a graphene-based appro
Externí odkaz:
http://arxiv.org/abs/1904.01487
Autor:
Tsilipakos, Odysseas, Liu, Fu, Pitilakis, Alexandros, Tasolamprou, Anna C., Kwon, Do-Hoon, Mirmoosa, Mohammad Sajjad, Kantartzis, Nikolaos V., Economou, Eleftherios N., Kafesaki, Maria, Soukoulis, Costas M., Tretyakov, Sergei A.
Publikováno v:
12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), Espoo, Finland, 2018, pp. 392-394
We demonstrate tunable perfect anomalous reflection with metasurfaces incorporating lumped elements. The tunable capacitance of each element provides continuous control over the local surface reactance, allowing for controlling the evanescent field d
Externí odkaz:
http://arxiv.org/abs/1904.00645