Ce travail s'inscrit dans la démarche de l'analyse des émissions électromagnétiques (EM) et de l'interaction de ces champs avec l'environnement. La caractérisation par la simulation des phénomènes résultant de l'interaction des champs avec les objets environnants nécessite au préalable la synthèse de modèles de sources équivalentes robustes et simples d'utilisation dans des modèles de propagation. Des méthodes telles que le tracé ou le lancé de rayons couplées avec des modèles mathématiques fiables tel que la technique uniforme de diffraction (UTD) permettent alors une bonne analyse des phénomènes. La technique proposée est basée sur la décomposition d'une source, de géométrie quelconque et dont les dimensions ne permettent pas l'utilisation triviale des méthodes asymptotiques en zone proche, en sources équivalentes plus petites qui, elles, permettent de calculer le champ rayonné très près de l'émetteur. Les sources élémentaires équivalentes sont représentées par leurs modes sphériques. Le choix du nombre de sources et du nombre de modes permet l'élaboration de modèles efficaces et la prise en compte des objets proches des antennes.
The present paper deals with the analysis of electromagnetic radiations and the interaction of radiated waves with the environment. The characterization by simulation of the phenomena resulting from the interaction of the fields with the surrounding objects requires as a preliminary the synthesis of robust and simple equivalent source models to be integrated in propagation schemes. Methods such as ray-tracing or launched rays coupled with reliable mathematical models such as the Uniform technique of Diffraction UTD then allow a good analysis of the phenomena. The proposed technique is based on the decomposition of a source, of arbitrary geometry and whose dimensions do not allow direct use of the asymptotic methods in its vicinity, into smaller equivalent sources which make possible to calculate the field radiated close to the transmitter. The equivalent elementary sources are represented by their spherical modes. The choice of the number of sources and the number of modes allows us to develop effective models and to account for the objects close to the antennas.
@article{CRPHYS_2005__6_6_640_0, author = {Azeddine Gati and Yacine Adane and Man-Fa{\"\i} Wong and Joe Wiart and Victor Fouad-Hanna}, title = {Inverse characterization of antennas by equivalent sources using spherical harmonics}, journal = {Comptes Rendus. Physique}, pages = {640--646}, publisher = {Elsevier}, volume = {6}, number = {6}, year = {2005}, doi = {10.1016/j.crhy.2005.06.006}, language = {en}, }
TY - JOUR AU - Azeddine Gati AU - Yacine Adane AU - Man-Faï Wong AU - Joe Wiart AU - Victor Fouad-Hanna TI - Inverse characterization of antennas by equivalent sources using spherical harmonics JO - Comptes Rendus. Physique PY - 2005 SP - 640 EP - 646 VL - 6 IS - 6 PB - Elsevier DO - 10.1016/j.crhy.2005.06.006 LA - en ID - CRPHYS_2005__6_6_640_0 ER -
%0 Journal Article %A Azeddine Gati %A Yacine Adane %A Man-Faï Wong %A Joe Wiart %A Victor Fouad-Hanna %T Inverse characterization of antennas by equivalent sources using spherical harmonics %J Comptes Rendus. Physique %D 2005 %P 640-646 %V 6 %N 6 %I Elsevier %R 10.1016/j.crhy.2005.06.006 %G en %F CRPHYS_2005__6_6_640_0
Azeddine Gati; Yacine Adane; Man-Faï Wong; Joe Wiart; Victor Fouad-Hanna. Inverse characterization of antennas by equivalent sources using spherical harmonics. Comptes Rendus. Physique, Volume 6 (2005) no. 6, pp. 640-646. doi : 10.1016/j.crhy.2005.06.006. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2005.06.006/
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Commentaires - Politique
Modelling of electromagnetic wave interactions with the human body
Man-Faï Wong; Joe Wiart
C. R. Phys (2005)