Patent ID: 6552627
Filing Date: 2003-04-22
Classification: H01P

Abstract:
A dielectric filter comprising:at least first and second groups of dielectric resonators, said first group of resonators being mutually coupled to form a series of said resonators extending in a defined direction, said second group of resonators being mutually coupled to form a series of said resonators extending in said defined direction, each said resonator including a dielectric core disposed in a cavity and being associated with a pair of coupling loops, the first coupling loop along said defined direction having a first coupling portion, the second coupling loop along said defined direction having a second coupling portion, each of said coupling portions being disposed in said cavity for coupling to a predetermined resonance mode of the dielectric resonator, wherein: a plurality of resonators in said first group of resonators are adjacent to a respective plurality of resonators in said second group of resonators, said first coupling portion in said resonator in said first group is substantially perpendicular to said first coupling portion in said resonator in said second group, and said second coupling portion in said resonator in said first group is substantially perpendicular to said second coupling portion in said resonator in said second group.