Patent ID: 8760242
Filing Date: 2014-06-24
Classification: H03H

Abstract:
1. A multilayer bandpass filter comprising: a plurality of LC parallel resonators including three or more LC parallel resonators, each of which includes a first capacitor electrode, a second capacitor electrode, and an inductor electrode; and a multilayer body that includes a plurality of dielectric layers and a plurality of electrode layers; wherein the plurality of electrode layers define the first capacitor electrode, the second capacitor electrode, and the inductor electrode of each of the plurality of LC parallel resonators; in each of the plurality of LC parallel resonators, the second capacitor electrode faces the first capacitor electrode, and the inductor electrode defines a loop, the loop including a first end portion that defines a start point and connects to the first capacitor electrode, and a second end portion that defines an end point and connects to the second capacitor electrode; in each of the plurality of LC parallel resonators, the inductor electrode includes a line electrode arranged along a respective one of the plurality of dielectric layers and a via electrode extending in a stacking direction of the plurality of dielectric layers; and the inductor electrodes of the plurality of LC parallel resonators are arranged such that loop planes of the inductor electrodes are disposed in a radial arrangement about a center axis extending in the stacking direction of the plurality of dielectric layers, and such that the inductor electrode of one of the plurality of LC parallel resonators at an input stage and the inductor electrode of one of the plurality of LC parallel resonators at an output stage are next to each other.