Resonators are electronic components that generate resonance frequencies. They are commonly divided into quartz crystal resonators and ceramic resonators. The function of generating frequency has the characteristics of stability and good anti-interference performance, and is widely used in various electronic products. The frequency accuracy of a quartz crystal resonator is higher than that of a ceramic resonator, but the cost is also higher than that of a ceramic resonator.
The types of resonators can be divided into two types: in-line and patch.
The resonator mainly plays the role of frequency control, and all electronic products need a resonator for the transmission and reception of frequencies.
Metal waveguides and metal resonators are widely used in decimeter waves, centimeter waves, and longer millimeter wave bands.
Dielectric resonators have the advantages of small size, light weight, high quality factor, and good stability. In particular, it is convenient to be applied in microstrip circuits or microwave integrated circuits and millimeter wave bands, which has received great attention and developed rapidly.