Patent ID: 6784767
Filing Date: 2004-08-31
Classification: H01P

Abstract:
A dielectric filter comprising:a dielectric block including a plurality of holes extending from a first face of the dielectric block to a second face of the dielectric block, the second face being opposed to the first face; a respective inner conductor formed on an inner surface of each of the plurality of holes in the dielectric block such that the open ends of the plurality of holes are open-circuited; balanced input/output terminals formed on an exterior surface of the dielectric block, the balanced input/output terminals being capacitively coupled to respective open ends of a first hole of the plurality of holes; an unbalanced input/output terminal formed on the exterior surface of the dielectric block, the unbalanced input/output terminal being capacitively coupled to the open end of a second hole of the plurality of holes; an outer conductor formed on the exterior surface of the dielectric block; and a ground electrode connected to the outer conductor, the ground electrode being formed at one of the first face and second face of the dielectric block.