Electromagnetic characteristics of barium titanate/epoxide resin composites in X and Ku bands

Using a reflection/transmission technique the complex relative permittivity and permeability of the barium titanate (BT) powder from sol–gel method were measured in the X and Ku bands. The BT/epoxide resin composite with different contents were investigated. It was found that the higher content of BT in composite yielded the good reflection loss in the X and Ku bands.