| 摘要 |
<p>Provided is a filter whereby it is possible to strengthen a capacitive coupling between LC parallel resonators. LC parallel resonators (LC1-LC3) are respectively aligned along the x-axis in a layered body (12), and contain coils (L1-L3) and capacitors (C1-C3). The LC parallel resonators (LC1-LC3) which are adjacent along the x-axis are mutually electromagnetically coupled. Each coil (L1-L3) comprises: a line conductor layer (18) which is disposed upon an insulation layer (16); a first via hole conductor which extends from the line conductor layer (18) in the minus direction along the z-axis and is electrically connected to one conductor layer of the capacitors (C1-C3); and a second via hole conductor which extends from the line conductor layer (18) in the minus direction along the z-axis and is electrically connected to another conductor layer of the capacitors. A conductor layer for coupling (20) forms a capacitance between the line conductor layers (18) which are adjacent along the x-axis.</p> |
