Zobrazeno 1 - 10
of 309
pro vyhledávání: '"Seong-Gon Choi"'
Autor:
Ramalingam Sakthivel, Palanisamy Selvaraj, Oh-Min Kwon, Seong-Gon Choi, Rathinasamy Sakthivel
Publikováno v:
Electronic Research Archive, Vol 31, Iss 12, Pp 7496-7510 (2023)
This paper addressed the problem of observer-based memory state feedback control design for semi-Markovian jump systems subject to input delays and external disturbances, where the measurement output was vulnerable to randomly occurring cyber attacks
Externí odkaz:
https://doaj.org/article/5c3e0d73ee32417393f8fa10d60517f3
Autor:
Erdenesukh Altanzaya, Jiwon Heo, Songyuan Xu, Chan-Soo Lee, Bierng-Chearl Ahn, Sung-Soo Kim, Seong-Gon Choi
Publikováno v:
Symmetry, Vol 16, Iss 3, p 304 (2024)
This paper presents a computer-simulation-based design of an in-line, coaxial-to-circular waveguide adapter for converting the coaxial transverse electromagnetic (TEM) mode to the circular waveguide TE11 mode over more than a one-octave bandwidth. Th
Externí odkaz:
https://doaj.org/article/38fcb3d033c5401083a5633c900ebc6f
Autor:
Qiongyue Zhang, Songyuan Xu, Jiwon Heo, Erdenesukh Altanzaya, Galsan-Yondon Ariunbold, Delger Otgonbat, Chan-Soo Lee, Bierng-Chearl Ahn, Shu Li, Seong-Gon Choi
Publikováno v:
Applied Sciences, Vol 14, Iss 1, p 74 (2023)
This Communication presents a computational design approach for a broadband in-line coaxial-to-rectangular waveguide transition having a 2.83:1 bandwidth. Existing designs have a bandwidth ranging from 1.36:1 to 2:1. The proposed transition consists
Externí odkaz:
https://doaj.org/article/c113785dbc51442a92f564c485f6dfd0
Autor:
Ji-Won Heo, Songyuan Xu, Erdenesukh Altanzaya, Qiongyue Zhang, Chan-Soo Lee, Bierng-Chearl Ahn, Jae-Hyeong Ahn, Seong-Gon Choi
Publikováno v:
Sensors, Vol 23, Iss 22, p 9176 (2023)
The maximum reflection at an open end of a standard rectangular waveguide is about −10 dB in its operating frequency range. It is often used without matching. For critical applications, it is desirable to further reduce the reflection coefficient.
Externí odkaz:
https://doaj.org/article/ab50de4732214036abc21443939535f2
Autor:
Jino Heo, Seong-Gon Choi
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract We propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum in
Externí odkaz:
https://doaj.org/article/2549f196a9124384a5ea2bbaa26fdbe9
Publikováno v:
Sensors, Vol 23, Iss 1, p 118 (2022)
This paper presents a design for a monopulse reflector antenna with asymmetric beamwidths for radar applications at the Ku band. The proposed design features a rectangular waveguide monopulse feed and a truncated parabolic reflector. An array of four
Externí odkaz:
https://doaj.org/article/e77c604338214b94816488f38d61d7d7
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-15 (2019)
Abstract We represent an optical scheme using cross-Kerr nonlinearities (XKNLs) and quantum dot (QD) within a single-sided optical cavity (QD-cavity system) to generate three-photon entangled W state containing entanglement against loss of one photon
Externí odkaz:
https://doaj.org/article/a1e9b4fbdd194c0c95ca7d4d1b1e9b31
Publikováno v:
IEEE Access, Vol 6, Pp 38535-38543 (2018)
This paper addresses the sampling effect problem in the microgrids consisted of multiple agents; easy example is the distributed generator. We would like to pay attention to the secondary control problem of the microgrids. Inhere, the sampling effect
Externí odkaz:
https://doaj.org/article/6f325ff323e6418cb727efd319c07011
Publikováno v:
IEEE Access, Vol 6, Pp 20964-20970 (2018)
This paper presents a millimeter-wave oscillator using frequency-boosting techniques to increase the oscillation frequency. In the proposed oscillator, a buffer-feedback oscillator and an RF negative-resistance circuit reduce the parasitic load capac
Externí odkaz:
https://doaj.org/article/fbb6be05da8e4463bd54a845ade996dc
Publikováno v:
International Journal of Antennas and Propagation, Vol 2019 (2019)
This paper presents a new high-performance five-element monopulse feed with a simple comparator network for Cassegrain reflector applications. The radiating element is a tapered dielectric rod fed by a circular waveguide which is in turn excited by a
Externí odkaz:
https://doaj.org/article/92ae582a2c754beaa0136f68ec3d5744