| With the rapid advancement of communication technology, microwave dielectric ceramics have emerged as essential materials, and their performance parameters play a critical role in determining application prospects. Practical applications of microwave dielectric ceramics require appropriate dielectric constants to accommodate diverse scenarios, low dielectric loss to enhance signal transmission efficiency, and nearly zero resonant frequency temperature coefficients to enhance stability across varying environments. Understanding dielectric properties across different frequency ranges is crucial for characterizing dielectric materials for various practical applications. Accurate measurements of dielectric properties are essential for predicting device performance and fostering the development of new systems. Both domestic and international scholars have proposed numerous test methods for measuring the performance parameters of microwave dielectric ceramics; however, these techniques are subject to certain limitations. Therefore, a comprehensive understanding of the testing principles, as well as the scope of application and precautions associated with various testing techniques, is essential for accurately assessing performance parameters. Furthermore, categorizing microwave dielectric ceramics based on their dielectric constants for different application scenarios is essential. A comprehensive understanding of the current state of research is essential for steering the development of high-performance microwave dielectric ceramics. This paper initiates the discussion by examining the main performance parameters of microwave dielectric ceramics, followed by a systematic exposition of common testing technologies for these materials. Lastly, a concise overview of existing research systems is provided as a reference point for studying high-performance microwave dielectric ceramics. |
