Present Status and Prospect of Microwave Dielectric Ceramics Fang Liang Yang Weiming Yan Junbin Zhang HuiMicrowave Dielectric Ceramics (MWDC) is a kind of key fundamental materials for mobile communication technique, and more and more attentions have been paid to MWDC in the world. Present research status of some important materials systems in low dielectric constant ( ε r ) materials, middle ε r materials and high ε r materials are reviewed. Finally, the prospect of MWDC with high properties is discussed according to the ideas of materials design.microwave dielectric ceramics (MWDC); dielectric properties; tungsten bronze structure; perovskite structure