Dielectric -filled rectangular resonator and its application in millimeter wave equalizer

In millimeter-wave band, the discontinuity of Coaxial resonators will bring a character called multi-resonating frequencies which means more than one resonating frequencies will be generated by one resonator. Multi-resonating frequencies will bring trouble to equalizer's designing. This paper provides a new structure to solve this problem. It is called Dielectric-filled rectangular resonator which replaces coaxial resonator by a partly dielectric-filled rectangular resonator. An accurate calculation for rectangular resonator's resonating frequency is obtained. Simulation results show that by changing the length of dielectric cavity and air cavity, the resonators can be frequency and attenuation adjustable.