This paper presents the design of a compact and high-Q microwave filter integrated by using a low-loss highpermittivity ceramic material. Further miniaturization is achieved by insertion of a capacitive post placed in the middle of each resonator. An unloaded quality factor of 385 is obtained for a miniaturized filter having typical dimensions of λ0/7.5 x λ0/7.5 x λ0/30 at 2.5 GHz, λ0 being the free space operating wavelength.