Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Bri Seddik"'
Publikováno v:
FME Transactions, Vol 52, Iss 1, Pp 68-77 (2024)
In this paper, two composites ZrB₂/Al₂O₃ and FeSiAl/Al₂O₃ were characterized using the Transmission/Reflection characterization technique. The volume contents of ZrB₂ and FeSiAl inclusions in these composites vary between 0 and 15%. The r
Externí odkaz:
https://doaj.org/article/4388b93bdb534ad3ad2290307f87c8fa
Publikováno v:
FME Transactions, Vol 49, Iss 1, Pp 103-112 (2021)
This article presents new structures and methods of design of miniature third-order substrate integrated waveguide (SIW) bandpass filters on a high-permittivity ceramic substrate for the C-band. The aim was to appraise the feasibility of such filters
Externí odkaz:
https://doaj.org/article/65e841b5b660436a9a3a7d53482df071
Dielectric properties of ceramic composite materials based on alumina reinforced by titanium carbide
Publikováno v:
FME Transactions, Vol 48, Iss 4, Pp 908-913 (2020)
The aim of this research work is to study the dielectric and microwave properties of the three ceramic composites Al2O3-TiC, Al2O3-0.3TiC and Al2O3-0.7TiC. The results obtained show that the effective permittivity increases with the increase in the f
Externí odkaz:
https://doaj.org/article/8d16197d06534c008ecbf7fa60790982
Publikováno v:
E3S Web of Conferences, Vol 469, p 00003 (2023)
This article presents a comprehensive analysis of the modeling and control techniques applied to a photovoltaic (PV) system that is connected to a three-phase grid. To successfully integrate the PV system with the electrical grid, an innovative and r
Externí odkaz:
https://doaj.org/article/960bf11469254da3b4ddaac9aaf4b7d5
Publikováno v:
E3S Web of Conferences, Vol 351, p 01089 (2022)
The metamaterial absorber’s new conception and simulation are presented in this paper. Two peaks of 97% and 99,8% are respectively shown by the absorption spectrum at the resonance frequencies 12,5 GHz and 14,5 GHz. Absorptivity is greater than 80%
Externí odkaz:
https://doaj.org/article/cfdcb49e05a14e35b7b21aa5a497d2c2
Autor:
Bikrat Mohamed, Bri Seddik
Publikováno v:
E3S Web of Conferences, Vol 351, p 01060 (2022)
A reconfigurable planar antenna design bandwidth operating in ultra wide band (UWB) applications with compact dimensions of (50 × 25× 1) mm3 is proposed. The switching capability is achieved by using a two PIN diodes F-shaped slot and a two narrow
Externí odkaz:
https://doaj.org/article/7144049ff3d24787935a33e232d821ec
Publikováno v:
FME Transactions, Vol 46, Iss 1, Pp 86-92 (2018)
The aim of this research work is to present a study of the microwave dielectric properties of three dielectric composites of periodic structure with Nicalon SiC fiber, Hi-Nicalon SiC fiber and SCS6 SiC fiber which are incorporated in a ceramic matrix
Externí odkaz:
https://doaj.org/article/3305e009a58b42c2ba56a6ccc09d3b39
Publikováno v:
FME Transactions, Vol 45, Iss 4, Pp 678-683 (2017)
The electromagnetic properties of polymer composites can be obtained by inverting the numerically simulated reflection S11 and transmission S21. Two composites containing amorphous glass-coated microwire Co52Cr22Ni10W7,5Fe1,5 and Fe59Cr21,5Ni7Si1Mn10
Externí odkaz:
https://doaj.org/article/894ddd655a694db8bb6b0a65550ee2f3
Publikováno v:
E3S Web of Conferences, Vol 229, p 01012 (2021)
The objective of this work is to determine the dielectric permittivity of two SiC ceramic matrix composites. These composites are reinforced with NicalonSiCfibers and SCS6SiC fibers (SiCf / SiC) and have different volume fractions. The results obtain
Externí odkaz:
https://doaj.org/article/48400da7c2704c4faf92b3eb1cca618e
Publikováno v:
E3S Web of Conferences, Vol 297, p 01013 (2021)
The objective of this paper is to extract and study the complex permittivity of the FeSiAl/Al2O3 ceramic composite at X-band frequencies. We studied by simulation the complex permittivity of four composites with FeSiAl content varying from 0% to 15%
Externí odkaz:
https://doaj.org/article/af9152f3f99249ed80afffee1f07bd0d