Radio frequency microwave ceramic powder and preparation method thereof, and preparation method of capacitor

The invention discloses a radio frequency microwave ceramic powder and a preparation method thereof, a preparation method of a capacitor, a microwave ceramic powder and a preparation method thereof, and the technical field of capacitor preparation, the radio frequency microwave ceramic powder is prepared from a sintered block material and glass powder, the structural formula of the sintered block material is (MgxZnyCaz) (TigAlf) O3, x is equal to 0.63-0.66, y is equal to 0.32-0.33, z is equal to 0.01-0.05, g is equal to 0.94-0.99, and f is equal to 0.01-0.06. Main crystalline phases of the radio-frequency microwave medium-fired ceramic powder are MgTiO3 and ZnTiO3, multiple auxiliary crystalline phases such as Mg2TiO4 and Zn2TiO4 exist, the sintering temperature can be reduced by adding the glass powder, and the qualified rate of a capacitor prepared by sintering the ceramic powder and low-palladium electrode slurry is increased; meanwhile, by adding CaTiO3, the capacity temperature coefficient is adjusted, t