Výsledky vyhledávání - "Laura Pometcu"

Characterization of sub-THz and mmWave Propagation Channel for Indoor Scenarios

Publikováno v: 12th European Conference on Antennas and Propagation (EuCAP 2018).

This paper presents a radio channel characterization in the frequency band 126-156 GHz. Three indoor scenarios have been characterized: a laboratory, a conference room and an office. Double steering of antennas at the transmitting side and at the rec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::647a38e3c90a4b2c6120b0f3b795ae66
https://doi.org/10.1049/cp.2018.0991

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Near-field gain measurements: Single-probe distance averaging in a multipath site versus multi-probe field scanning inside an anechoic chamber

Autor: Liliana Anchidin, Farida Bari, Ala Sharaiha, Razvan D. Tamas, Laura Pometcu

Publikováno v: 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS).

The size of a site for antenna gain measurements is usually correlated with the lower limit of the far-field range; otherwise, near-field to far-field transforms should be performed on data resulting from a field scanning with one or more electricall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a73559f10b5d7e5dec63781e405c6fe
https://doi.org/10.23919/ursigass.2017.8105248

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On the choice of the dielectric characterization method for foam composite absorber material

Autor: Claire Le Paven, Philippe Pouliguen, Ala Sharaiha, Laura Pometcu, Chloé Mejean, Ratiba Benzerga

Publikováno v: Materials Research Bulletin
Materials Research Bulletin, Elsevier, 2017, 96 (2), pp.107-114. ⟨10.1016/j.materresbull.2017.04.055⟩
Materials Research Bulletin, 2017, 96 (2), pp.107-114. ⟨10.1016/j.materresbull.2017.04.055⟩

International audience; AbstractThis paper presents the characterization by three different techniques of a new lossy material made of carbon fibers loaded epoxy foam that can be used as an absorber in anechoic-chambers. The composite was characteriz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::967fe284b78a40793f0df141f92e7db4
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01585678/document

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Combination of artificial materials with conventional pyramidal absorbers for microwave absorption improvement

Autor: Laura Pometcu, Ratiba Benzerga, Ala Sharaiha, Philippe Pouliguen

Publikováno v: Materials Research Bulletin
Materials Research Bulletin, Elsevier, 2017, 96, pp.86-93. ⟨10.1016/j.materresbull.2016.12.050⟩
Materials Research Bulletin, 2017, 96, pp.86-93. ⟨10.1016/j.materresbull.2016.12.050⟩

This article addresses the combination of an artificial and conventional absorber materials in order to enhance its absorption properties and compactness. We demonstrate an increase of the absorption performance of the pyramidal absorbers by integrat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1de8e21e3cf22ec4e1cc2f490599001f
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01585681

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Electromagnetic absorber composite made of carbon fibers loaded epoxy foam for anechoic chamber application

Autor: Mathieu Badard, Ala Sharaiha, Philippe Pouliguen, Ratiba Benzerga, Chloé Mejean, Laura Pometcu, Claire Le Paven-Thivet

Publikováno v: Materials Science and Engineering: B
Materials Science and Engineering: B, Elsevier, 2017, 220, pp.59--65. ⟨10.1016/j.mseb.2017.03.009⟩
Materials Science and Engineering: B, 2017, 220, pp.59--65. ⟨10.1016/j.mseb.2017.03.009⟩

International audience; This paper presents a new electromagnetic absorbing material developed from carbon fibers loaded epoxy foam for an application in anechoic chamber. The composite was developed in order to replace the currently used pyramidal a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::798c86deb9dbe7777cd7c2a5831de805
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01508052

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Method for material characterization in a non-anechoic environment

Autor: Ratiba Benzerga, Ala Sharaiha, Laura Pometcu, Philippe Pouliguen, Razvan D. Tamas

Publikováno v: Applied Physics Letters
Applied Physics Letters, American Institute of Physics, 2016, 108, 108 (16), pp.161604. ⟨10.1063/1.4947100⟩
Applied Physics Letters, 2016, 108, 108 (16), pp.161604. ⟨10.1063/1.4947100⟩

International audience; This paper presents a characterization method for extracting the reflection coefficient of materials and the real part of their permittivity. The characterization is performed in a real environment, as opposed to the classical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0758f319cf620174897f409297207a7
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01324486

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Improved microwave absorption of pyramidal absorber using metamaterial

Autor: Ratiba Benzerga, Ala Sharaiha, Gwenael Dun, Laura Pometcu, Philippe Pouliguen

Publikováno v: 2016 10th European Conference on Antennas and Propagation (EuCAP).

International audience; We proposed and demonstrated a scheme to enhance and tune absorption properties of conventional microwave absorbing materials by metamaterials. First, an interleaved metamaterial array operating at several frequencies is propo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a5b4ed41bed4ac69a206aaf15485e63
https://doi.org/10.1109/eucap.2016.7481112

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Straight wedge absorber geometry optimization for normal and oblique incidence

Autor: Ala Sharaiha, Laura Pometcu, Ratiba Benzerga, Philippe Pouliguen

Publikováno v: Loughborough Antenna and Propagation conference
Loughborough Antenna and Propagation conference, Nov 2014, Loughborough, United Kingdom. pp.633-636, ⟨10.1109/LAPC.2014.6996472⟩

International audience; —This paper presents a topology for improving the performance of straight wedge absorbing materials at oblique angles of incidence. The optimization process is based on a genetic algorithm and allows one to obtain a low refl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d03865482e014836866831d864d1b29
https://doi.org/10.1109/lapc.2014.6996472

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