Study of a Coplanar Circulator Based on a Barium Hexaferrite Nanocomposite

Taline Boyajian (1) , Didier Vincent (2) , Martine Leberre (3) , Sophie Neveu (4)

1 LT2C
2 LT2C - Laboratoire Telecom Claude Chappe
3 INL - DE - INL - Dispositifs Electroniques
4 PECSA - Physicochimie des Electrolytes, Colloïdes et Sciences Analytiques

This paper presents the design and analysis of a Y-junction coplanar circulator operating in the frequency range of 40{60 GHz. The magnetic material used in this circulator's numerical study is a Barium Hexaferrite with a magnetization lower than the usual ferrite. Its purpose is to assume the performance of such circulator when its conventional ferrite is replaced by a magnetic nanocomposite. Magnetization depends on the volume of the magnetic material; therefore, the volume fraction of the barium hexaferrite nanoparticles in the ¯nal nanocomposite is introduced. A three dimensional ¯nite element method was used to evaluate numerically the circulator's performance. Preliminary experiments on the nanocomposite magnetic material showing its orientation and non-reciprocity are presented.

Mots clés: Composite magnetic material; circulator; microwave; non reciprocal passive component

Domaines: Electronique; Electromagnétisme

Taline Boyajian, Didier Vincent, Martine Leberre, Sophie Neveu. Study of a Coplanar Circulator Based on a Barium Hexaferrite Nanocomposite. Progress in Electromagnetics Research Symposium : [proceedings]. Progress in Electromagnetics Research Symposium, 2011, 7 (3), pp.201-205. ⟨ujm-00798930⟩