Characterization of Antennas on Dielectric and Magnetic Substrates Effective Medium Approximation

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

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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Rialet, Damien; Sharaiha, Ala; Tarot, Anne-Claude (IETR, University of Rennes 1, Rennes, France)
Delaveaud, Christophe (CEA-LETI, MINATEC, Grenoble, France)

This paper presents a study of the effective medium approximation of a monopole antenna printed on either a dielectric or a magnetic substrate. Simple analytical formulas to determine the effective permeability of such an antenna have been proposed and validated. For this type of antenna as μ r increases, the effective permeability will reach the value of 2 (maximum) whereas, with the dielectric substrate, the effective permittivity continues to rise when increasing ε r. This shows that, for very high permeability values, we will always have a size reduction below 30%.