Influence of source - phantom multiple interactions on the field transmitted in a flat phantom

Antenna/Body Coupling in the Near-Field at 60 GHz: Impact on the Absorbed Power Density

“…The system presented in [14] uses a multi-probe technology combined with switching networks for spherical near-field measurements in the 18-50 GHz range to retrieve the incident power density. When an antenna is placed in the vicinity of a lossy medium, such as human skin, electromagnetic contrast at the air/skin interface results in the appearance of scattered field and near field interactions, which modify the field impinging the human body compared to the free-space radiation [15,16]. Hence, in free-space measurements of the incident power density, variations of the power density due to the coupling of a wireless device with the human body are not taken into account.…”

Field sampling and field reconstruction: A new perspective

“…[2] The problem of extracting the maximum amount of information on an electromagnetic field over a domain D O from field measurements on a domain D I , with a priori information on the source [Bertero et al, 1979;Marks, 1980;Severcan, 1982;Yaghjian, 1986;Kao et al, 1999;Schreier et al, 2000;Piestun and Miller, 2000;Derat et al, 2007;Vinetti, 2008;Gruber and Marengo, 2008;Capozzoli et al, 2009a] (equivalent current distribution [Collin, 1991] or polarization current, contrast source [Langenberg, 2002;Li et al, 2009]), henceforth referred to as the source J , sustaining the radiated (scattered) field of interest, is relevant in a large number of applications.…”

“…[4] In microwave and millimeter-wave applications, we mention Near-Field/Far-Field (NFFF) [Yaghjian, 1986;Capozzoli et al, 2009a] or Very Near-Field/ Far-Field (V-NFFF) [Vinetti, 2008] transformations, in which D I is located within the near-field or very nearfield of the radiator to be characterized, while D O is located in its far-field region and a priori information on the radiator/scatterer geometry is exploited. We also point out applications of electromagnetic compatibility in which D I and D O can be disjoint domains located in the near-field region of unintentional sources [Derat et al, 2007]. Finally, we cite Multiple Input Multiple Output systems (MIMO) for which, from receivers located in D O , it is desired to reconstruct the information transmitted by sources in D I [Piestun and Miller, 2000;Gruber and Marengo, 2008].…”

Correlation of specific absorption rates in the human head due to multiple independent sources

“…The addition of jewellery complicates the scenario but is fundamentally different from two independent sources. The authors have also examined the mechanisms of near-field interaction between dipoles and mobile phone models and homogeneous body models [5] [6]. Studies have been conducted in the past on exposure to multiple mobile phone sources inside enclosed spaces such as trains and elevators [7] [8] but studies on multiple radiation sources from a single device are limited.…”