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pro vyhledávání: '"Periodic Structures"'
Akademický článek
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Publikováno v:
Magazine of Civil Engineering, Vol 17, Iss 4 (2024)
This study presents a newly developed method for reasonable selection of boundary conditions and number of pinned intermediate supports for a straight multi-span beam. This method might help to obtain the required values of the first frequency of fre
Externí odkaz:
https://doaj.org/article/badaf9a17cc649318ce91a5d8a558e61
Autor:
Parra, J.A. a, Zhuravlev, A.G. b, ⁎, Zhirihin, D.V. b, Sayanskiy, A.D. b, Glybovski, S.B. b, Baena, J.D. a
Publikováno v:
In Photonics and Nanostructures - Fundamentals and Applications February 2025 63
Autor:
Ruozhong Han, Yuchan Zhang, Qilin Jiang, Long Chen, Kaiqiang Cao, Shian Zhang, Donghai Feng, Zhenrong Sun, Tianqing Jia
Publikováno v:
Opto-Electronic Science, Vol 3, Iss 3, Pp 1-14 (2024)
Femtosecond laser-induced periodic surface structures (LIPSS) have been extensively studied over the past few decades. In particular, the period and groove width of high-spatial-frequency LIPSS (HSFL) is much smaller than the diffraction limit, makin
Externí odkaz:
https://doaj.org/article/1abbcb31a8cf4cf19e80f63e9d3cebae
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2024, Iss 1, Pp 1-17 (2024)
Abstract This paper addresses the issue of constructing millimeter band antennas using dielectric waveguide structures. A new type of linear antenna, incorporating metal pins on the side walls of the grooved dielectric waveguide, is proposed for gene
Externí odkaz:
https://doaj.org/article/624abfbc5c764770b4a9ce09eb171947
Publikováno v:
IEEE Journal of Microwaves, Vol 4, Iss 4, Pp 690-705 (2024)
We discuss the issue of identifying the forward/backward nature of modes in bounded one-dimensional periodic structures. This identification is based on the possibility of adequately and uniquely defining the phase velocity in these types of structur
Externí odkaz:
https://doaj.org/article/6530917779b54e5d85ad673f61d849eb
Publikováno v:
IEEE Access, Vol 12, Pp 92281-92294 (2024)
This paper details the extraction of possible equivalent circuits over a wide band for an Electric-LC resonator in two technological configurations: a) a multilayer stack working at mm-wave and b) a WR90 waveguide in the X band. The proposed equivale
Externí odkaz:
https://doaj.org/article/ec881a88cdfc49b1a98b37140de5be76
Autor:
Suleyman Adanir, Lale Alatan
Publikováno v:
IEEE Access, Vol 12, Pp 46704-46716 (2024)
The analysis of a single source in the vicinity of periodic structures is a very challenging task since the aperiodic source forbids a direct application of a periodic analysis method to the problem. Full wave methods addressing these problems involv
Externí odkaz:
https://doaj.org/article/e0bd1e710df64911a7ae987cda6d2a06