Coupling Structures in Combline Resonators

Combline 공진기 내의 결합구조

  • 김병욱 (포항공과대학교 전자전기공학과) ;
  • 김영수 (포항공과대학교 전자전기공학과)
  • Published : 2002.11.01


Three types of the coupling structures in combline resonators are presented: magnetic, electric, and mixed coupling structures. The magnetic coupling structure is provided by the window, and the electric coupling is provided by the electric probe. The mixed coupling structure which is the superposition of the magnetic and electric coupling structures, is proposed for the electric coupling in combline resonators with easy tuning capability. The responses of each coupling structure are shown. A 4-pole combline filter is designed and fabricated as an application of those coupling structures, and shows good filter responses.