Patent ID: 6977560

Claim:
An input/output coupling structure for a dielectric waveguide resonator to be mounted on a printed circuit board, comprising: a region defined in said printed circuit board, said region being surrounded by a first conductive film, a second conductive film and a conductive wall, said first conductive film being formed on the front surface of said printed circuit board and connected to a microstrip line on said printed circuit board, said second conductive film being formed on the back surface of said printed circuit board, said conductive wall connecting the respective peripheries of said first and second conductive films; a first slot formed in the front surface of said region; and a second slot formed in a surface of said dielectric waveguide resonator, said surface of said dielectric waveguide resonator being disposed to be opposed to said region of said printed circuit board, wherein said first and second slots are adapted to be disposed in opposed relation to one another such that input/output coupling is formed by only said printed circuit board and said dielectric waveguide resonator.