Dielectric properties of alumina doped with TiO2 from 13 to 73Â GHz

Recent studies show that alumina doped with TiO2 exhibits promising dielectric properties, corresponding to low loss tangents and low temperature coefficients (or close to 0 ppmC−1). This paper aims to confirm these trends and study the dielectric properties of alumina doped with TiO2 from 0.5% to 12% wt. at high frequency, 13-73 GHz. This work demonstrates that alumina doped with TiO2 corresponds to potential materials for frequency converter devices working at a high frequency (up to 50 GHz).