Improved microwave dielectric ceramic powder and preparation method and application thereof

Abstract

The invention discloses improved microwave dielectric ceramic powder and a preparation method and application thereof. The microwave dielectric ceramic powder comprises ceramic powder prepared from the following raw materials in parts by weight: 30-40 parts of calcium carbonate, 25-30 parts of titanium dioxide, 25-35 parts of samarium oxide, 5-15 parts of aluminum oxide, 0.5-2 parts of cerium oxide and 0.01-0.5 part of niobium oxide. The improved microwave dielectric ceramic powder prepared by the method is a microwave dielectric material with high QxFo [ceramic quality factor] value and low loss of dielectric constant 43, the electrical performance of microwave components such as a cavity filter can be significantly improved, especially the insertion loss of the filter is reduced, and a more stable temperature coefficient is obtained so that the influence on the filter due to use environment factors in actual use is reduced.

Description

technical field [0001] The invention relates to ceramic powder, in particular to an improved microwave dielectric ceramic powder, a preparation method thereof, and an application thereof. Background technique [0002] Filters and resonators are needed in mobile communication base station systems, and the core raw materials for producing filters and resonators are improved microwave dielectric ceramic powders with a dielectric constant of 43 and a QXFo value above 42,000. The ceramic powder is mainly used in microwave devices such as dielectric resonators, filters, duplexers, microwave integrated circuit substrates, components, dielectric waveguides, and dielectric antennas, and can be used in mobile communications, satellite communications, and military radars. With the rapid development of science and technology, the rapid increase in the amount of communication information, and people's requirements for wireless communication, the use of microwave communication systems suc...

AI Technical Summary

Problems solved by technology

At present, the high QxFo [ceramic quality factor] value microwave dielectric raw materials with a dielectric constant of 43 in China are almost monopolized by Japan at this stage, and other countries need to import raw material powders of this specification from Japan, which are expensive and have a long delivery time

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