Search Results - "Derat, B."

A New Closed Form Field Asymptotic Expansion Applied to Far-field Evaluation of Antenna Arrays at Short Range Lengths by Derat, B.

“…A new general formulation for the asymptotic expansion of electromagnetic fields radiated by an arbitrary antenna is introduced and demonstrated. The presented…”
Get full text

Implications in the interpretation of plane-wave expansions in lossy media and the need for a generalized definition by Cozza, A., Aberbour, L., Derat, B.

“…Plane-wave expansions (PWEs) based on Fourier transform and their physical interpretation are discussed for the case of homogeneous and isotropic lossy media…”
Get full text

On the Dispersive Nature of the Power Dissipated Into a Lossy Half-Space Close to a Radiating Source by Cozza, A., Derat, B.

“…We study how the power dissipated into a lossy medium excited by a nearby antenna is affected by drifts in the electrical parameters of the lossy medium. The…”
Get full text

Enhanced Simulation-Augmented OTA Technique Applied to Absorbed Power Density Evaluation by Derat, B., Liebig, T., Schaefer, D., Simon, W.

“…This paper proposes a fast human exposure Absorbed Power Density assessment approach, based on a combination of over-the-air radiative field measurements and…”
Get full text

Evaluation of Near-Field to Far-Field Transformation Accuracy Based on Reference Radiation Models by Bhatt, A., Kyrligkitsi, A., Gemmer, T. M., Tankielun, A., Bartko, H., Derat, B., Dallmann, T.

“…Measuring the radiation behavior of antennas in an anechoic environment with far-field (FF) conditions requires large measurement sites resulting in high…”
Get full text

Two-Element PIFA Array Structure for Polarization Diversity in UMTS Mobile Phones by Ferrero, Fabien, Diallo, Aliou, Luxey, Cyril, Derat, B., Hamouz, P., Hazdra, P., Rahola, J.

“…In this paper, we demonstrate the possibility to strongly modify the radiated fields of a UMTS handset by using a phased two-element PIFA array. The structure…”
Get full text

Influence of the Hand on the Specific Absorption Rate in the Head by Chung-Huan Li, Douglas, M., Ofli, E., Derat, B., Gabriel, S., Chavannes, N., Kuster, N.

“…The influence of the user's hand holding a mobile phone to the ear on the peak spatial-average Specific Absorption Rate (psSAR) averaged over any 1 g and 10 g…”
Get full text

Hand phantom models for the assessment of SAR in the head from cellular telephones by Douglas, M G, Derat, B, Liao, X, Ofli, E, Kuster, N

“…A methodology for assessing the SAR in the head in the presence of the hand has been developed and investigated. A standardized hand phantom, developed for…”
Get full text

Analysis of the hand effect on head SAR with generic and CAD phone models using FDTD by Li, C.-H, Douglas, M, Ofli, E, Derat, B, Chavannes, N, Kuster, N

“…In this paper, a multi-variable investigation of the effect of the user's hand in terms of SAR in the head has been conducted. The generic mobile phones and…”
Get full text

Various optimization problems of electromagnetic power absorption in homogeneous and heterogeneous phantoms by Derat, B., Bolomey, Jean-Charles

Get full text

Reliability of Specific Absorption Rate measurements in the head using standardized hand phantoms by Douglas, M G, Derat, B, Li, C.-H, Liao, X, Ofli, E, Chavannes, N, Kuster, N

“…This study presents an analysis of the influence of the hand on the SAR in the head of mobile phone users, and it examines the reliability of standardized hand…”
Get full text

Modal-based analysis of depth influence on SAR applied to the correlation study between averaged SAR and total dissipated power by Derat, B., Bolomey, J.-C.

“…Measurement campaigns have shown that the electric field due to a mobile handset in an homogeneous phantom globally decays exponentially with depth. The aim of…”
Get full text

Various Optimization Problems of Electromagnetic Power Absorption in Homogeneous and Heterogeneous Phantoms by Derat, Benot, Bolomey, Jean-Charles

“…Over the last decade, problems related to electromagnetic power absorption by human bodies or phantoms have been motivating a large scientific and technical…”
Get full text

A measurement interlab for investigating the hand effect on head SAR by Derat, B., Gabriel, S., Douglas, M. G., Kuster, N.

“…The results presented in this paper contribute to the investigations on the impact of the user's hand on the SAR in the head. Six laboratories have assessed…”
Get full text

A novel technology for fast and accurate specific absorption rate measurement by Derat, B., Aberbour, L., Quelever, K., Julien, T., Dembinski, M., Pannetrat, S., Cozza, A.

“…Standard Specific Absorption Rate (SAR) measurement methods are highly time consuming. Compliance test lead times for mobile wireless devices are incompatible…”
Get full text

Analysis of vector e-field sensor array for real-time SAR assessment by Aberbour, L., Derat, B., Cozza, A.

“…A novel Specific Absorption Rate (SAR) measurement approach using a finite but electrically large array of vector field sensors embedded in a phantom is…”
Get full text

Phased two-element PIFA for adaptative pattern in UMTS handsets by Ferrero, F., Diallo, A., Luxey, C., Derat, B.

“…In this paper, we demonstrate the possibility to strongly modify the radiated fields of a UMTS handset by using a phased two-element PIFA array. The structure…”
Get full text

Challenges in modelling near field antenna-body interactions by Derat, B., Cozza, A., Simon, W.

“…At the end of the nineties, the FDTD simulation of a basic coaxial-MSL transition typically took about an hour; real-life problems were practically impossible…”
Get full text

Pattern diversity versus polarization diversity in UMTS mobile phones by Ferrero, F., Diallo, A., Luxey, C., Derat, B.

“…In this paper, we describe the design of a novel two-antenna UMTS mobile phone structure able to either radiate vertically or horizontally polarized electric…”
Get full text

User's hand effect on the Specific Absorption Rate in the head by Chung-Huan Li, Douglas, M., Ofli, E., Derat, B., Kuster, N.

“…This study is an investigation of the influence of the user's hand on the radiated performance of a mobile phone, particularly the peak spatial averaged…”
Get full text