Zobrazeno 1 - 10
of 1 499
pro vyhledávání: '"S. Costanzo"'
Autor:
S. Costanzo, G. Lopez
Publikováno v:
Radioengineering, Vol 28, Iss 3, Pp 512-516 (2019)
In the present work, an improved phaseless approach to microwave imaging is presented. Starting from the Contrast Source formulation of the scattering problem, a single-step procedure with no intermediate phase-retrieval process is described. The rec
Externí odkaz:
https://doaj.org/article/d02d6fddb1fa4c4fbef8652f3f6151bb
Publikováno v:
Radioengineering, Vol 27, Iss 1, Pp 1-9 (2018)
Reconfigurable antennas allow to meet the increasing demands of modern RF communication systems for reconfiguration capabilities, such as beam-steering, multi-band operation, polarization flexibility or frequency agility. Active reflectarrays may rep
Externí odkaz:
https://doaj.org/article/7474e3aded324d078f209e2d9487a3af
Autor:
E. Intrieri, F. Bardi, R. Fanti, G. Gigli, F. Fidolini, N. Casagli, S. Costanzo, A. Raffo, G. Di Massa, G. Capparelli, P. Versace
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 17, Pp 1713-1723 (2017)
A big challenge in terms or landslide risk mitigation is represented by increasing the resiliency of society exposed to the risk. Among the possible strategies with which to reach this goal, there is the implementation of early warning systems. Th
Externí odkaz:
https://doaj.org/article/718b72bf856842279256a1a44a9dd14b
Autor:
S. Costanzo
Publikováno v:
Radioengineering, Vol 26, Iss 2, Pp 406-410 (2017)
The basic operation principles of non-invasive microwave sensors are summarized in this work, with specific emphasis on health-care systems applications. Design criteria to achieve reliable results in terms of biological parameters detection are spec
Externí odkaz:
https://doaj.org/article/30f95f33e4af4cc8a6f92cc4857c00e5
Publikováno v:
Radioengineering, Vol 25, Iss 2, Pp 253-257 (2016)
An equivalent circuit approach is adopted in this paper to analyze a novel varactor loaded phasing line, specifically designed to improve the frequency agility features of reconfigurable aperture-coupled reflectarray cell, through the use of a couple
Externí odkaz:
https://doaj.org/article/634bafa63bb146e88e66cb008815bca1
Publikováno v:
Radioengineering, Vol 21, Iss 4, Pp 1025-1030 (2012)
In this paper, a fast frequency sweep technique is applied to the analysis of Substrate Integrated Waveguides performed with a Green’s function technique. The well-known Asymptotic Waveform Evaluation technique is used to extract the Padè approxim
Externí odkaz:
https://doaj.org/article/6c5ed908e1c146be8e66e315267b5aea
Publikováno v:
International Journal of Antennas and Propagation, Vol 2016 (2016)
Fractal geometries are appealing in all applications where miniaturization capabilities are required, ranging from antennas to frequency selective surfaces (FSS) design. Recently, some fractal patches configurations, giving low losses, reduced size,
Externí odkaz:
https://doaj.org/article/a728b9bb24354cb5bc22cebb2303f97f
Publikováno v:
Radioengineering, Vol 20, Iss 4, Pp 785-789 (2011)
The need of low-loss substrate materials with stable dielectric performances is a strong requirement when working at millimeter frequencies, where standard dielectrics exhibit prohibitive losses. In this paper, the authors focus their attention on a
Externí odkaz:
https://doaj.org/article/815ccd335b9343e0971d8c37d65e68de
Autor:
G. D. Massa, S. Costanzo
Publikováno v:
Radioengineering, Vol 17, Iss 4, Pp 8-12 (2008)
A wideband frequency behavior is demonstrated for a phaseless near-field technique of basically interferometric approach, which uses two identical probes interfering each other through a microstrip circuit and performing amplitude-only near-field mea
Externí odkaz:
https://doaj.org/article/024cf539be3343fab4d4f839b9595b8a
Autor:
S. Costanzo, A. Costanzo
Publikováno v:
Journal of Electrical and Computer Engineering, Vol 2013 (2013)
The original U-shaped patch antenna is properly modified in this work to provide a compact and broadband antenna configuration with reduced cross-polar effects, well suitable for modern radar applications. The proposed antenna layout is applied to de
Externí odkaz:
https://doaj.org/article/1eb5f160eb154838abf356e885a30b32