MANUFACTURING METHOD OF MICROWAVE BAND DIELECTRIC MATERIAL WITH HIGH QUALITY FACTOR AND GOOD TEMPERCTARE CHARETERISTICS

摘要

In the present invention, the quality factor (Q) is 4500 to 5500 in the high frequency band (9 to 11 GHz), the temperature coefficient (τf) of the resonance frequency is -6 to 17 ppm / ° C, and the dielectric constant is 30 or more. It relates to a method for producing a dielectric material exhibiting excellent dielectric properties not previously reported, and to a dielectric material produced by such a method.;In the method of the present invention, an aqueous solution of citric acid is added to a mixed solution of barium (Ba) and titanium (Ti) component compounds to prepare Ba-Ti = citrate aqueous solution, and the pH of the aqueous solution of Ba-Ti-citrate is about 6 After adjusting to a degree, gelled and dried, the dried dielectric material is prepared by heat treatment.