Patent ID: 6281764
Filing Date: 2001-08-28
Classification: H01P,Y02B

Abstract:
A multi-terminal dielectric waveguide filter comprising:a dielectric block having an outer surface covered with a conductive film, a pair of end surfaces, first and second opposing side surfaces extending between said end surfaces, and third and fourth opposing side surfaces extending between said first and second side surfaces;a plurality of resonance holes formed in said dielectric block extending between said first and second side surfaces, inner surfaces of said resonance holes being substantially free of conductive material, each said resonance hole defining a resonator;a plurality of slots formed respectively in said third and fourth side surfaces, at locations along said dielectric block between respective pairs of said resonance holes, and covered by said conductive film;a plurality of coupling holes formed in said dielectric block extending from said first side surface and comprising a conductive material so as to provide coupling electrodes which are electromagnetically coupled to respective ones of said resonance holes; anda plurality of terminals connected respectively to said plurality of coupling holes.