US Patent 9755293 Enhanced Q high dielectric constant material for microwave applications

Enhanced Q high dielectric constant material for microwave applications. In some embodiments, a composition can include a material with a formula Ba4+xSm(2/3)(14−x+0.5y)Ti18−yAlyO54, with the quantity y being in a range 0<y<2, and the quantity x being in a range 0<x<2−y. Such a material can have a dielectric constant value greater than 60 and a Qf value greater than 10,000 at a frequency (f) at or less than 1 GHz. In some embodiments, a material having such properties can be implemented as a ceramic device and be utilized as a dielectric microwave resonator. Such a microwave resonator can be utilized as, for example, a narrowband radio-frequency (RF) filter.