tio 2 Microwave-based ceramic substrate material, preparation method and application

Abstract

The invention provides a TiO 2 Microwave-based ceramic substrate material and its preparation method and application, it is composed of two crystal phases, the ceramic main crystal phase is rutile TiO 2 , the second crystal phase is MgTi 2 O 5 ; Ordinary oxide ZrO 2 , Nb 2 O 5 , SnO 2 Enter TiO as a dopant 2 A solid solution is formed in the crystal lattice; MnCO 3 , CoO, CuO, ZnO, Al 2 O 3 As a dopant in ceramics, it plays a role in improving the quality factor of ceramics. The general chemical formula is Ti 1‑x A x O 2 +yMgO+zB, its preparation method includes batching, ball milling, granulation, molding, sintering, and the TiO prepared by the method of the present invention 2 The microwave-based ceramic substrate material has a high Q×f value (20000~40000), high dielectric constant (80~95) and serialized dielectric constant temperature coefficient (‑550~‑900) through laboratory research and testing. The composite ceramic of the invention is suitable for making substrate materials of microwave capacitors, and can also be used for making materials of adjustable microwave devices such as microstrip filters.

Description

Technical field [0001] The present invention relates to a microwave ceramic substrate material suitable for a microwave capacitor and a microstrip filter and a preparation method thereof, and a ceramic material is based on a golden red stone TiO. 2 The modification was prepared, which belongs to the field of advanced communication components. Background technique [0002] The rapid development of electronic information technology has become higher and higher for integration, reliability, stability, and miniaturization requirements for electronic components. Today, the fourth-generation (4G) communication network has been popular in the world, and 5G networks have been vigorously promoted because of the speed, network spectrum width, and intelligence, has been vigorously promoted. High-frequency has become one of the electronics industry. development trend. Ceramic filter is increasing between system modules and communication receiving ends. At the same time, with the growing deve...

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Problems solved by technology

However, the article did not study its surface morphology, and could not evaluate whether it could meet the processing requirements of the fine particle structure on the surface of the microstrip filter, and did not test the modified TiO 2 The dielectric temperature coefficient of the ceramic material cannot be determined to meet the actual application requirements

[0005] Currently researched TiO 2 Microwave dielectric ceramic materials are trying their best to pursue their low loss characteristics, but never consider their machinability. Therefore, there is an urgent need to develop a microwave dielectric with simple process, low raw material cost, and low loss characteristics while meeting the requirements of dielectric constant. Ceramic materials, and by controlling the microstructure of microstrip ceramics to achieve precision machining of microstrip ceramics to meet the microstrip process, it can also adapt to the processing technology of ultra-miniature microwave capacitors to meet the application requirements of the high-frequency microwave communication industry

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