A high-q transparent yag microwave dielectric ceramic material and its application

Abstract

The invention belongs to the technical field of electronic information function materials and devices, and particularly relates to transparent YAG microwave dielectric ceramic with the high quality factor and application thereof. The high-Q transparent YAG microwave dielectric ceramic material has the advantages that high-purity raw materials are selected, and therefore the influences of impurities are avoided; the influences of grinding ball varieties and abrasion are taken into account; a small quantity of sintering aids are doped, and therefore impurity phases are prevented from being generated; sintering is performed by adopting a vacuum atmosphere, the sintering temperature is higher, diffusing and moving of elements are promoted, and a ceramic body is more compact; the relative density of the obtained YAG microwave dielectric ceramic is larger and is larger than or equal to 99.9 percent, nearly no pore is contained, the obtained YAG microwave dielectric ceramic is pure YAG single-phase ceramic and is transparent after being polished, and the transmissivity at the wave length of 1064 nm is larger than or equal to 80 percent; furthermore, due to the fact that the transparent YAG microwave dielectric ceramic is composed of pure YAG which is little in contained impurity and free of the pores, the obtained quality factor Q value is larger and ranges from 95000 to 171000 GHz. The high-Q transparent YAG microwave dielectric ceramic material is suitable for being used as a microwave dielectric substrate material and can be manufactured into microwave communication components and parts such as dielectric resonators and dielectric filters in the modern communication technology.

Description

technical field [0001] The invention belongs to the technical field of electronic information functional materials and devices, and specifically relates to a high-quality transparent YAG microwave dielectric ceramic material and its application. It is suitable for use as a microwave dielectric substrate material and can be made into a dielectric resonator in modern communication technology. , dielectric filters and other microwave communication components. technical background [0002] With the rapid development of microwave communication technology, requirements for microwave equipment such as small size, light weight, high reliability, excellent performance and low cost have been put forward, which has led to the combination of microwave technology and integrated circuits. Produced microwave integrated circuits. One of the basic requirements of microwave integrated circuit technology for the transmission system is that it must have a planar structure, so that its transmis...

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Problems solved by technology

For the research in the field of laser gain media, the transparent YAG ceramics prepared by laser transparent ceramics have a relative density greater than 99.9%, almost no pores or other defects inside, and have a pure YAG phase, which should have a very low dielectric density. electrical loss, but its microwave dielectric properties and applications in microwave dielectric substrate materials have not been reported

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