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The FDTD method applied to the study of mjcrostrip patch antennas with a biased ferrite substrate

MÉthode des diffÉrences finies dans le domaine temporel appliquÉe À l’Étude d’antennes plaques sur substrat en ferrite polarisÉ


In communication systems microstrip patch antennas must operate in circular polarization. To fulfill this requirement, a new type of antenna is studied microstrip patch antennas printed on a ferrite substrate, which can naturally generate circular polarization with only one feed point. Few theoretical methods allow the study of rectangular microstrip patch antennas on ferrite substrate. An original method based on a finite difference time domain approach is introduced in this paper. After a description of this numerical method, a validation is made, then some characteristics of such antennas are given.


L’introduction des antennes microrubans dans les systèmes de communication nécessite des éléments capables de fonctionner en polarisation circulaire. Afin de pouvoir générer une telle polarisation, de nouveaux types d’antennes sont étudiés. En particulier, les antennes plaques sur un substrat ferrite polarisé per mettent de générer naturellement de la polarisation circulaire. Peu de méthodes permettent une étude d’antennes de forme rectangulaire de ce type. Aussi une technique originale d’analyse par une méthode aux différences finies est proposée dans cet article. Aprés une présentation de la méthode, une validation a été effectuée. De même, quelques résultats sur les caractéristiques de telles antennes sont données.

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Correspondence to Alain Reineix or Christian Melon or Thierry MonÉdiÈre or Françoise Jecko.

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Reineix, A., Melon, C., MonÉdiÈre, T. et al. The FDTD method applied to the study of mjcrostrip patch antennas with a biased ferrite substrate. Ann. Télécommun. 49, 137–142 (1994).

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Key words

  • Patch antenna
  • Ferrite
  • Time domain method
  • Finite difference method
  • Frequency characteristic

Mots clés

  • Antenne plaque
  • Ferrite
  • Méthode domaine temps
  • Méthode différence finie
  • Caractéristique fréquentielle