Patent ID: 8884721

Claim:
A laminated LC filter comprising: a laminate including a plurality of dielectric layers, a capacitor electrode layer, a first inductor electrode layer, a ground electrode layer, a pair of input/output electrode layers, and a via electrode extending through the dielectric layers in a thickness direction thereof, and having a substantially rectangular parallelepiped shape; a first LC resonator including a first capacitor including the capacitor electrode layer and a first inductor including the first inductor electrode layer; a second LC resonator including a second capacitor and a second inductor including a second inductor electrode layer facing the first inductor electrode layer; and a third capacitor including the first and second inductor electrode layers; the first inductor includes the first inductor electrode layer and the via electrode extending through the plurality of dielectric layers in the thickness direction, and has a substantially loop shape; the first capacitor includes the ground electrode layer and the capacitor electrode layer facing the ground electrode layer; and one of the pair of input/output electrode layers is disposed on a first outermost surface of the laminate in a direction in which the plurality of dielectric layers are laminated and another one of the pair of input/output electrode layers is disposed on a second outermost surface of the laminate opposite to the first outermost surface of the laminate in the direction in which the plurality of dielectric layers are laminated; the first and second inductors generate magnetic fields in directions that are perpendicular or substantially perpendicular to loop surfaces thereof; and the first and second LC resonators are adjacent to each other in the thickness direction.