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FDTD simulations and measurements for cell phone with planar antennas

Simulations et Mesures avec la Méthode FDTD pour les Téléphones Cellulaires avec Antennes Planaires

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Abstract

The Finite-Difference Time-Domain (fdtd) method is used to calculate the cellular phone far and near field and the specific absorption rate (sar) in the user’s head. The conventional λ/4 monopole and a simple planar antenna are simulated and measured. The simulated results are in good agreement with those measured for thevswr and for the radiation patterns on the horizontal and vertical planes. These results show that significant improvements in the antenna radiation efficiency and in the reduction of thesar in the head are obtained when planar antennas are used.

Résumé

On utilise la méthode des différences finies dans le domaine temporel (fdtd) pour calculer les champs proche et lointain émis par un téléphone cellulaire, et le débit d’absorption spécifique (das) dans la tête de l’utilisateur. On simule et on mesure l’antenne unipolaire classique en λ/4 et une simple antenne planaire. Les résultats simulés concordent avec les résultats mesurés du rapport d’onde stationnaire (ros) et des diagrammes de rayonnement dans le plan horizontal et dans le plan vertical. Ces résultats montrent qu’en utilisant des antennes planaires, on améliore significativement l’efficacité de rayonnement de l’antenne et la réduction dusar dans la tête.

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Authors and Affiliations

  1. Electrical Engineering Department, Optoelectronic Communications Laboratory, Federal University of Rio Grande do Sul (UFRGS), Av. Osvaldo Arahna, 103, RS 90035-190, Porto Alegre, Brasil

    Claudio R. Fernández & Alvaro A. A. De Salles

  2. the Electrical Engineering Department, Aeronautical Technologic Institute (ITA), São José dos Campos, SP, Brasil

    Mateus Bonadiman

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  1. Claudio R. Fernández
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  2. Mateus Bonadiman
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  3. Alvaro A. A. De Salles
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Correspondence to Claudio R. Fernández.

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was with the E.E.Dept.ufrgs.

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Fernández, C.R., Bonadiman, M. & De Salles, A.A.A. FDTD simulations and measurements for cell phone with planar antennas. Ann. Télécommun. 59, 1012–1030 (2004). https://doi.org/10.1007/BF03179708

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