Investigation of magneto-dielectric thin films as substrates for patch antennas

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Grange, Francois; Garello, Kevin; Benevent, Evangeline; Bories, Serge; Viala, Bernard; Delaveaud, Christophe (CEA-LETI, MINATEC, 38054 Grenoble, France)
Garello, Kevin; Benevent, Evangeline; Viala, Bernard (SPINTEC, CEA, CNRS, UJF, INPG; CEA/INAC 38054 Grenoble, France)
Garello, Kevin; Mahdjoubi, Kouroch (XLIM, CNRS, 87060 Limoges, France)

In the present paper we discuss the effect of magneto-dielectric laminated thin films on the characteristics of a patch antenna. The results found in the literature for antenna using bulk magneto-dielectric substrates are revised and discussion is addressed to the practical case of μ and ε larger than unity. We present an original solution based on a high permeability thin film suitable for microwave regime. It consists in using a combination of ultrahigh magnetization and ultrahigh exchange-biased FeCo multilayers with dielectrics. Measurements are presented using the microwave composite as a prospective patch antenna substrate.