A dielectric resonator is used in RF (radio frequency) and microwave circuits to serve various functions, primarily related to signal processing and frequency stabilization.
Dielectric resonators are used in filters to select or reject specific frequencies. They help ensure that only desired frequencies pass through while blocking unwanted frequencies.
They typically have a high quality factor (Q factor), which means they have sharp, well-defined resonant frequencies and minimal signal loss, making them ideal for filtering applications.