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Samarium oxide is an important raw material for manufacturing dielectric resonators. When added to the formula of dielectric resonators, some Sm³⁺ ions, with an ionic radius of 0.096nm, can replace other ions, fill the surrounding gaps, reduce grain boundary enrichment, and improve the density of ceramics. This further increases the Q factor and reduces the frequency temperature coefficient. It is often mixed with calcium carbonate, aluminum oxide, titanium dioxide, etc. in specific proportions, and processed through procedures such as batching, ball milling, and granulation to produce microwave dielectric ceramics. These ceramics are used in the production of communication base station filters, oscillators, etc., contributing to the miniaturization and high-frequency development of microwave circuits.