Resonator and filter
AssigneeSoshin Electric Co., Ltd.
InventorKeisuke Ogawa
Life of this patent
Estimating the term…
Abstract
Provided are a resonator and a filter that exhibit preferable characteristics. This resonator has: a via electrode which is formed within a dielectric substrate; a plurality of shielded conductors which are formed in the dielectric substrate so as to surround the via electrode; and a strip line which is connected to the via electrode inside the dielectric substrate and which is disposed so as to at least face the shielded conductors, wherein, of the plurality of shielded conductors, one that is connected to a short-circuited end of the via electrode is capacitatively coupled, across a spacing, to a first input/output terminal and a second input/output terminal.
Claims10
A resonator comprising:
- a via electrode portion formed inside a dielectric substrate;
- a plurality of shielding conductors formed on the dielectric substrate so as to surround the via electrode portion;
- and
- a strip line connected to the via electrode portion inside the dielectric substrate and that faces at least the shielding conductor,
- wherein a first input/output terminal or a second input/output terminal is coupled to the via electrode portion without involving the shielding conductors and the strip line.
A filter comprising a plurality of resonators each comprising:
- a via electrode portion formed inside a dielectric substrate;
- a plurality of shielding conductors formed to surround the via electrode portion;
- and
- a strip line connected to one end of the via electrode portion and that faces at least one of the plurality of shielding conductors, wherein
- a first input/output terminal is coupled, without involving the shielding conductors and the strip line, to the via electrode portion of a first resonator of the plurality of the resonators, and
- a second input/output terminal is coupled, without involving the shielding conductors and the strip line, to the via electrode portion of a second resonator of the plurality of the resonators.
Dependencies are inferred from the claim text.