As 5G technology is widely adopted and the research and development of 6G technology gather pace, communication systems are swiftly evolving towards higher frequencies, faster speeds, larger capacities, and broader temperature ranges. Microwave dielectric ceramics, serving as the pivotal materials for core components like base station antennas, millimeter-wave radars, and radio frequency front-end modules, are of paramount importance in determining the signal transmission efficiency and operational stability of communication systems. In high-frequency communications, microwave dielectric ceramics with a low dielectric constant (low-k) can minimize dielectric losses, thereby ensuring the swift and low-distortion transmission of high-frequency signals. The temperature coefficient of resonant frequency (τf) stands as another crucial parameter that directly influences the temperature stability of the device's operating frequency. At present, the majority of microwave dielectric ceramics display negative frequency temperature coefficient characteristics, rendering them susceptible to frequency drift under a wide range of temperature conditions.