Electromagnetic measurements of composites containing barium strontium titanate or nickel zinc ferrite inclusions from 1 to 4 GHz

Composites with barium strontium titanate (BST) or nickel zinc ferrite (NZF) spherical inclusions mixed in a silicone matrix were manufactured at volume fractions ranging from 5% to 25%. The dielectric and magnetic parameters were measured from 1 to 4 GHz using a coaxial airline. The relative permittivity increased from 2.74 ± 0.01 for the polydimethylsiloxane (PDMS) host material to 7.45 ± 0.33 after combining PDMS with a 25% volume fraction of...