Reducing effects of hand phantom on mobile antennas using magneto-dielectric material

In this paper, a practical application of the magneto-dielectric (MD) materials to the mobile handset antennas is presented. The polymer MD composites with the property of low magnetic loss (tan δ_m <; 0.1) up to 2 GHz are developed using hexagonal ferrites and polymer matrices. The MD composites are applied to manufacture an actual antenna substrate for a mobile handset. Experimental results show that the MD composite antenna is advantageous for an antenna miniaturization and deterioration of performance by a hand phantom.