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发明授权
CN105801119B 一种微波介电LTCC材料及其制备方法 失效 - 权利终止

一种微波介电LTCC材料及其制备方法
摘要：
本发明属于电子陶瓷材料及其制造领域，具体涉及一种微波介电LTCC材料及其制备方法。本发明提供的CaWO4体系微波介电LTCC材料，包含CaWO4和Li2TiO3混合的两相以及0.5～1wt％LBSCA玻璃助熔剂；其中主晶相为四方相白钨矿CaWO4，辅助相为单斜晶系结构Li2TiO3；CaWO4和Li2TiO3混合料的重量百分比为84～86％：14～16％，以及总混合料重量百分比为0.5～1wt％的LBSCA玻璃助溶剂。其烧结温度为900～950℃，介电常数11.8～12.4，Q×f值57000～76000GHz，谐振频率温度系数‑2.9～1.1ppm/℃。可广泛应用于LTCC微波基板、叠层微波器件和模块中。
摘要（英）：

The invention belongs to the field of electronic ceramic materials and preparation thereof, and in particular relates to a microwave dielectric LTCC material and a preparation method thereof. The CaWO4 system microwave dielectric LTCC material provided by the invention comprises two phases of mixed CaWO4 and Li2TiO3 and 0.5-1wt% of an LBSCA glass fluxing agent, wherein tetragonal-phase scheelite CaWO4 is taken as the main crystal phase; a monoclinic system structure Li2TiO3 is taken as the auxiliary phase; the weight percentage ratio of the mixed material CaWO4 to Li2TiO3 is (84-86%):(14-16%); the total mixed material weight percentage of the LBSCA glass fluxing agent is 0.5-1wt%. The sintering temperature of the material is 900-950 DEG C, the dielectric constant of the material is 11.8-12.4, the Q*f value of the material is 57000-76000GHz, and the temperature coefficient of resonance frequency of the material is minus 2.9-1.1ppm/DEG C. The microwave dielectric LTCC material can be widely applied to LTCC microwave substrates and laminated microwave devices and modules.

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