Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Keming FENG"'
Publikováno v:
Jin'gangshi yu moliao moju gongcheng, Vol 43, Iss 3, Pp 298-304 (2023)
In order to improve the forming accuracy of grinding wheel, the pressing method of the four-column press for grinding wheel was investigated, tested, carded and analyzed. It was found that the traditional press generally had the phenomena of three ce
Externí odkaz:
https://doaj.org/article/83efe2cdde2b4a0b95f0fd28995358dd
Publikováno v:
China Communications. 18:63-79
In this paper, we investigate the reconfigurable intelligent surface (RIS)-enabled multiple-input-single-output orthogonal frequency division multiplexing (MISO-OFDM) system under frequency-selective channels, and propose a low-complexity alternating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::185b3a5c0a2c9d86d0184abda54ba9a5
https://doi.org/10.23919/jcc.2021.03.006
https://doi.org/10.23919/jcc.2021.03.006
Publikováno v:
IEEE Wireless Communications Letters. 9:745-749
This letter investigates the intelligent reflecting surface (IRS)-aided multiple-input single-output wireless transmission system. Particularly, the optimization of the passive phase shift of each element at IRS to maximize the downlink received sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4aa48606aca41d59ae4b84fdeecaf77
https://doi.org/10.1109/lwc.2020.2969167
https://doi.org/10.1109/lwc.2020.2969167
Publikováno v:
Journal of Applied Physics; 7/28/2016, Vol. 120 Issue 4, p1-7, 7p, 3 Diagrams, 2 Charts, 8 Graphs
Autor:
Wei Zhao, Song Liu, Hai Wang, Yan Liu, Shengkang Zhang, Chunyue Cheng, Keming Feng, Ilja Ocket, Dominique Schreurs, Bart Nauwelaers, Hongbo Qin, Xiaodong Yang
Publikováno v:
Applied Sciences, Vol 7, Iss 9, p 866 (2017)
This paper investigates a unified theory to derive vector network analyzer calibration algorithms based on the T-matrix representation, by which means the line-reflect-match (LRM), line-reflect-match-match (LRMM), and the line-reflect-reflect-match (
Externí odkaz:
https://doaj.org/article/a71e4cf28f63476f993edd4081afb70f
Publikováno v:
VTC Spring
Reconfigurable intelligent surface (RIS) is a low-cost device envisioned to achieve substantial promotion in both spectrum and energy efficiency in the future wireless communication systems. In this paper, we investigate the downlink transmission of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7474e300838a493ce1194ee133aa1c6
https://doi.org/10.1109/vtc2021-spring51267.2021.9449003
https://doi.org/10.1109/vtc2021-spring51267.2021.9449003
Autor:
Shengkang Zhang, Ilja Ocket, Dominique Schreurs, Bart Nauwelaers, Chunyue Cheng, Keming Feng, Xiue Bao, Juncheng Bao, Song Liu
Publikováno v:
IEEE Microwave and Wireless Components Letters. 28:356-358
This letter presents a general “line–line” (LL) method for measuring dielectric material’s permittivity using transmission lines. Like the previous LL methods, the proposed method needs a fully characterized transmission line as a reference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::872b861c5864d171e85300241a4415a3
https://doi.org/10.1109/lmwc.2018.2809041
https://doi.org/10.1109/lmwc.2018.2809041
In this letter, the use of intelligent reflecting surface (IRS) to enhance the physical layer security of downlink wireless communication is investigated. Assuming a single-antenna legitimate user and a multi-antenna eavesdropper, we propose an effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc1cf44ed026cbbda0e34a0997ff55df
http://arxiv.org/abs/1911.02766
http://arxiv.org/abs/1911.02766
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 35:962-973
Ka-band compact dielectric waveguide antenna array for active imaging system is given. Antenna array with WR28 metal waveguide direct feeding is specially designed with small size, high gain, good radiation pattern, easy realization, low insertion lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a75c4f49c93df8b8d9f8591a7464f4d2
https://doi.org/10.1007/s10762-014-0097-5
https://doi.org/10.1007/s10762-014-0097-5
This paper proposes a highly effective method for enhancing the backscattering by a conducting cylinder that is coated with a gradient metasurface. The employed metasurface exhibits a phase gradient continuously varying along the circumferential dire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::585104e9d8be5444ad114370f5124a3b
https://hdl.handle.net/10356/83624
https://hdl.handle.net/10356/83624