Patent ID: 9666922
Date: 2017-05-30
CPC Classifications: H01P,H01Q,H03H

Claim:
1. A dielectric filter, comprising: a dielectric block having a rectangular parallelepiped shape, being provided with a plurality of first through holes and one or more second through holes; a plurality of inner conductors disposed on inner surfaces of the first through holes, respectively, including a first inner conductor and a second inner conductor; a first terminal electrode electrically or electromagnetically connected to the first inner conductor; a second terminal electrode electrically or electromagnetically connected to the second inner conductor; an outer conductor disposed to surround the dielectric block, being connected to a reference potential; one or more first conductors disposed on a first side surface of the dielectric block; and capacitance-coupling inner conductors which are not adjacent to each other among the inner conductors; wherein: the first through holes penetrating into the dielectric block in a first direction which is a direction from one of the first side surface and a second side surface of the dielectric block which face each other, toward the other thereof, and being arranged at intervals in a second direction which is a direction from one of a third side surface and a fourth side surface of the dielectric block which face each other, toward the other thereof, the second through holes penetrating into the dielectric block in the first direction, and being located at a position between adjacent first through holes in the second direction, the first inner conductor being disposed on an inner surface of a first through hole of the first through holes which is located at one end in the second direction, the second inner conductor being disposed on an inner surface of a first through hole of the first through holes which is located at the other end in the second direction, the outer conductor being disposed to be in contact with a first main surface of the dielectric block, and to face a second main surface, the third side surface, and the fourth side surface of the dielectric block at intervals, the first through holes being located on a second main surface side of the dielectric block, the second through holes being located on a first main surface side with reference to the first through holes, and the one or more first conductors are disposed on the second main surface side with reference to the inner conductors.