High-strength low-loss temperature-stable LTCC (Low Temperature Co-Fired Ceramic) dielectric material and preparation method thereof

The invention relates to a high-strength low-loss temperature-stable LTCC dielectric material and a preparation method thereof, the LTCC dielectric material comprises, by mass, a parts of MgTiO3, b parts of CaTiO3, c parts of TiO2, d parts of Al2O3, and e parts of Ca-Mg-Si glass, a is 25-40, b is 5-12, c is 1-5, d is 1-4, e is 45-60, and a + b + c + d + e = 100. The LTCC dielectric material is an LTCC material with the dielectric constant of 12-16, low loss, stable temperature and high strength. The LTCC material can be sintered compactly at the temperature of less than or equal to 900 DEG C, the dielectric constant is continuously adjustable in the range of 12-16, the low dielectric loss is less than or equal to 0.9 per thousand, the near-zero frequency temperature coefficient is-10 to + 10 ppm/DEG C, and the high bending strength is not less than 220 MPa. The LTCC dielectric material is low in production cost and simple in preparation process, and can be applied to devices such as multilayer dielectric reso