Study on Pin-Type Artificial Dielectric Resonator for Base-Station Filter

Due to the increase of communication traffic, a small cell system and small base stations are required. Thus, microwave filters with small size, low cost and high performance is expected. By using artificial dielectrics, filter performance can be improved, and size can be reduced. In this research, a pin-type artificial dielectric resonator is studied. The effect of metal pin-shape on resonance frequency and unloaded Q is investigated. With the results, resonance frequency and unloaded Q was adjusted for a specific filter performance. Further, to improve the performance, resonator structure was optimized. The performance of experimental resonator was measured.