A Dielectric Resonator Buried in a Layered Polymer Package

摘要

Dielectric resonators have found widespread usage in many microwave devices such as low phase noise oscillators and low insertion loss filters. However, the integration of dielectric resonators in portable microwave devices is difficult due to the isolation and shielding requirements for proper, stable operation of the dielectric resonator. This paper discusses an alternative method for the integration of a dielectric resonator in a microwave circuit. By burying the dielectric resonator inside a host substrate, the proper shielding and isolation of the dielectric resonator can be achieved. Also, even though the resonator is surrounded by a relatively lossy substrate, a high Q resonator with a measured unloaded Q of approximately 2700 can be obtained.