Patent ID: 6498542
Filing Date: 2002-12-24
Classification: H01P

Abstract:
A dielectric duplexer, comprising:a dielectric block having a substantially rectangular-parallelepiped shape and including at least one axially extending inner conductor therein; an outer conductor provided on a plurality of outer surfaces of the dielectric block but not on an open outer surface of the dielectric block which lies substantially perpendicular to an axis of the axially extending inner conductor; a first input/output electrode located on a first pair of adjacent outer surfaces of the dielectric block, the adjacent outer surfaces extending parallel to the axis of the inner conductor, the first input/output electrode being separated from the outer conductor by a groove which extends into the first pair of adjacent outer surfaces; a second input/output electrode located on a second pair of adjacent outer surfaces of the dielectric block, the adjacent outer surfaces extending parallel to the axis of the inner conductor, the second input/output electrode being separated from the outer conductor by a second groove which extends into the second pair of adjacent outer surfaces; and a third input/output electrode located on an outer surface of the dielectric block and on the opposite side of the dielectric block from the first and second input/output electrodes, the outer conductor being disposed between the first and second grooves.