Zn_1−xMn_xTiNb₂O₈ (0.05 ≤ x ≤ 0.30) microwave dielectric ceramics were synthesized by the solid-state reaction method. The impacts of partial substitution of Mn²⁺ for Zn²⁺ on the crystal phase, crystal structure, grain morphology, and microwave dielectric properties were investigated in detail. Minor ixiolite phase of MnTiNb₂O₈ was detected via the X-ray diffraction at higher x levels. Structural characteristics, such as porosity, packing fraction, and [Zn/Ti/NbO₆] octahedron distortion, were discussed to reveal the correlations between the microwave dielectric characteristics and the crystal structure. It was suggested that the permittivity was related to the porosity and the minor phase, while the quality factor was mainly determined by the packing fraction and relative density. The temperature coefficient of the resonant frequency was positively correlated with the distortion of [Zn/Ti/NbO₆] octahedron. Among all Zn_1−xMn_xTiNb₂O₈ ceramics, the sample of x = 0.05 sintered at 1100 °C exhibited good microwave dielectric properties: ε_r = 35.91, Q × f = 63,672 GHz (at 6.52 GHz), and τ_f = − 68.68 ppm/°C, which provided an effective performance modulating approach for microwave dielectric ceramic design.

锌_{1- X}锰_X的TiNb ₂ ö ₈（0.05≤  X  ≤0.30）微波介质陶瓷是由固相反应法来合成。详细研究了Mn ²⁺代替Zn ²⁺对晶体相，晶体结构，晶粒形貌和微波介电性能的影响。通过X射线衍射在较高的x水平下检测到MnTiNb ₂ O _8的次堇青石相。结构特征，例如孔隙率，堆积分数和[Zn / Ti / NbO ₆讨论了八面体畸变，以揭示微波介电特性与晶体结构之间的关系。提出介电常数与孔隙率和次要相有关，而品质因数主要由堆积率和相对密度决定。共振频率的温度系数与[Zn / Ti / NbO ₆ ]八面体的变形呈正相关。在所有的Zn _{1- X}锰_X的TiNb ₂ ö _8个陶瓷，所述的样品X  = 0.05在1100烧结℃下表现出良好的介电性能：ε _{- [R}  = 35.91，Q×˚F = 63672千兆赫（在6.52千兆赫）和τ _˚F  = - 68.68 PPM /℃，这提供了有效的性能调节微波介电陶瓷的设计方法。