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US 12,756,081 B2Granted
Filter
AssigneeSoshin Electric Co., Ltd.
InventorsKazuya Adachi, Kazuma Kosaka
Life of this patent
Estimating the term…
Abstract
A filter comprises: a plurality of resonators, each of which is provided with a via electrode and capacitor electrodes; a first shielding conductor; and a first coupling capacitance electrode that faces the first shield conductor and is not connected to any of the plurality of resonators. The first coupling capacitance electrode is formed on a layer on which a first capacitor electrode is formed, and a part of the first coupling capacitance electrode is positioned between a second capacitor electrode and the first shield conductor.
Claims4
A filter comprising:
- a dielectric substrate including a first main surface, and a second main surface positioned on an opposite side of the first main surface;
- a first shielding conductor formed on a first main surface side in the dielectric substrate;
- a second shielding conductor formed on a second main surface side in the dielectric substrate;
- a plurality of resonators each of which is equipped with a via electrode portion formed between the first shielding conductor and the second shielding conductor, and a capacitor electrode connected to one end of the via electrode portion;
- and
- a first coupling capacitance electrode that is not connected to any one of the plurality of resonators, and that is configured to face toward the first shielding conductor;
- wherein the first coupling capacitance electrode is formed in a layer in which a first capacitor electrode from among the plurality of capacitor electrodes is formed;
- a layer in which the first capacitor electrode is formed is positioned between a layer in which a second capacitor electrode from among the plurality of capacitor electrodes is formed, and a layer in which the first shielding conductor is formed;
- and
- a part of the first coupling capacitance electrode is positioned between the second capacitor electrode and the first shielding conductor.
7 more elements
Dependencies are inferred from the claim text.