Composite LC resonator and band pass filter

摘要

A composite LC resonator includes a ground electrode adjacent to a first principal surface of a multilayer body, a first capacitor electrode farther inward than the ground electrode and defining a first capacitor together with the ground electrode, a first electrode of a second capacitor, a second electrode of the second capacitor defining a second capacitor together with the first electrode of the second capacitor, a first via-electrode defining a first inductor, a first end of the first via-electrode electrically connected to the first capacitor electrode and a second end of the first via-electrode electrically connected to the first electrode of the second capacitor, and a second via-electrode defining a second inductor, a first end of the second via-electrode electrically connected to the second electrode of the second capacitor and a second end of the second via-electrode being electrically connected to the ground electrode.

主权项

1. A composite LC resonator comprising:
a multilayer body including a plurality of insulating layers stacked on each other, plate electrodes extending along principal surfaces of the plurality of insulating layers, and via-electrodes passing through insulating layers of the plurality of insulating layers in a direction in which the plurality of insulating layers are stacked; a plurality of capacitors; and a plurality of inductors; wherein the plurality of capacitors and the plurality of inductors are defined by the plate electrodes and the via-electrodes or one of the plate electrodes and the via-electrodes; a ground electrode disposed adjacent to a first principal surface of the principal surfaces of the multilayer body; a first capacitor electrode that is disposed farther inward in the direction in which the plurality of insulating layers are stacked than the ground electrode and that defines a first capacitor of the plurality of capacitors together with the ground electrode; a first electrode of a second capacitor of the plurality of capacitors; a second electrode of the second capacitor that defines the second capacitor together with the first electrode of the second capacitor; a first inductor of the plurality of inductors defined by one of the via-electrodes, a first end of the first inductor being electrically connected to the first capacitor electrode and a second end of the first inductor being electrically connected to the first electrode of the second capacitor; and a second inductor of the plurality of inductors defined by another one of the via-electrodes, a first end of the second inductor being directly connected to the second electrode of the second capacitor and a second end of the second inductor being directly connected to the ground electrode.