Zobrazeno 1 - 10
of 71
pro vyhledávání: '"R. Barrak"'
Publikováno v:
Radioengineering, Vol 29, Iss 3, Pp 452-459 (2020)
A stacked patch antenna with balanced feed operating in millimeter-wave band is proposed in this paper. Initially, a single balanced-fed patch antenna is designed in three layers. Simulation results show that the proposed antenna enhances the cross-p
Externí odkaz:
https://doaj.org/article/8fd54f9281774e809d8ec61e43359773
Publikováno v:
Radioengineering, Vol 28, Iss 2, Pp 357-368 (2019)
In this paper, we investigate a scalable Radio over Fiber (RoF) system compliant to 5G fronthauling requirements. The proposed RoF architecture is able to adjust the network resources and capacities to satisfy user demands in terms of service, data r
Externí odkaz:
https://doaj.org/article/5a52548e2fe748f48591019084eb9cb6
Publikováno v:
Radioengineering, Vol 27, Iss 1, Pp 193-199 (2018)
A new topology for a multiband filter suitable for multistandard and multiband mobile terminals is proposed. This filter named MultiCrossed Open Stubs (MCOS) is based on the wideband Quarter-Wave Short Circuited Stubs (QWSCS) topology and consists of
Externí odkaz:
https://doaj.org/article/fb95ab29596144a3913f42e67dc36a74
Akademický článek
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Akademický článek
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Publikováno v:
Materials Research, Vol 4, Iss 2, Pp 53-57 (2001)
Graft polymerization of N-vinyl-2-pyrrolidone with chitin was studied using hydrogen peroxide for initiation. The capacity of the obtained VP-g-Ch graft copolymer for adsorption of nickel was examined. The effect of temperature, pH and solute concent
Externí odkaz:
https://doaj.org/article/5fb33a231e9344e7ab79b16b82c3a5d6
Publikováno v:
WINCOM
A Baseband Digital Predistorter design is proposed in this paper for a UHF 8 MHz Power Amplifier (PA) for DVB-T transmitter. A Memory Polynomial (MP) model is considered for the PA characterization and its coefficients are estimated based on Least Sq
Akademický článek
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Publikováno v:
Materials Research v.4 n.2 2001
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 4, Iss 2, Pp 53-57 (2001)
SciELO
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Materials Research, Volume: 4, Issue: 2, Pages: 53-57, Published: 2001
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 4, Iss 2, Pp 53-57 (2001)
SciELO
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Materials Research, Volume: 4, Issue: 2, Pages: 53-57, Published: 2001
Made available in DSpace on 2021-07-14T10:27:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2001. Added 1 bitstream(s) on 2021-07-14T11:30:59Z : No. of bitstreams: 1 S1516-14392001000200002.pdf: 130596 bytes, checksum: c51f238b86f2962488843304e
Autor:
Blanka Wlasdislaw, Liliana Marzorati, Alvaro Antonio Alencar de Queiroz, Etelvino J. H. Bechara, E. R. Barrak, Reinaldo R. Vargas, Olga Z. Higa
Publikováno v:
Radiation Physics and Chemistry. 55:345-352
The graft copolymer poly(propylene)-graft-poly(acrylic acid) (PP-G-AA) was prepared by radiation-induced graft copolymerization of acrylic acid onto polypropylene spheres and characterized by thermal analysis and scanning electron microscopy (SEM). M