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US 12,580,289 B2Granted
Filter
AssigneeTDK Corporation
InventorsShuhei Sawaguchi, Tetsuzo Goto, Yuta Ashida, Masahiro Tatematsu, Keigo Shibuya, Tomonori Terui
Life of this patent
Estimating the term…
Abstract
A filter includes: a first ground conductor layer and a second ground conductor layer arranged to be spaced from each other, a resonator conductor layer arranged between the first ground conductor layer and the second ground conductor layer and constituting a part of a resonator, a through hole connecting the first ground conductor layers and the resonator conductor layer and constituting a different part of the resonator, and a body. The resonator conductor layer is not directly connected to the second ground conductor layer.
Claims12
A filter comprising:
- a first terminal;
- a second terminal;
- a first ground conductor layer arranged and spaced from a second ground conductor layer, each of the first ground conductor layer and the second ground conductor layer being connected to ground;
- a plurality of resonators provided between the first terminal and the second terminal in circuit configuration;
- a first resonator conductor layer and a second resonator conductor layer each arranged between the first ground conductor layer and the second ground conductor layer;
- a first through hole connecting the first ground conductor layer and the first resonator conductor layer;
- at least one second through hole connecting the second ground conductor layer and the second resonator conductor layer;
- and
- a body composed of a dielectric and integrating the first terminal, the second terminal, the first ground conductor layer, the second ground conductor layer, the plurality of resonators, the first resonator conductor layer, the second resonator conductor layer, the first through hole, and the second through hole, wherein:
- the first resonator conductor layer is not directly connected to the second ground conductor layer;
- at least one of the plurality of resonators is formed by using the first resonator conductor layer and the first through hole;
- and
- at least one of the plurality of resonators other than the at least one of the plurality of resonators is formed using the second resonator conductor layer.
10 more elements
A filter comprising:
- a first terminal;
- a second terminal;
- a first ground conductor layer and a second ground conductor layer each connected to ground and arranged to be spaced from each other;
- a first resonator conductor layer arranged between the first ground conductor layer and the second ground conductor layer;
- a first through hole connecting the first ground conductor layer and the first resonator conductor layer;
- a first resonator and a second resonator each formed by using the first resonator conductor layer and the first through hole;
- and
- a body composed of a dielectric and integrating the first terminal, the second terminal, the first ground conductor layer, the second ground conductor layer, the first resonator, the second resonator, the first resonator conductor layer, and the first through hole, wherein the first resonator conductor layer is not directly connected to the second ground conductor layer,
- the first resonator conductor layer of each of the first resonator and the second resonator extends in a direction in which the first through hole of the first resonator and the first through hole of the second resonator are aligned,
- the first resonator conductor layer includes a first end and a second end located at respective longitudinal ends of the first resonator conductor layer,
- the first through hole is connected to a portion near the first end of the first resonator conductor layer, and
- the first resonator conductor layer of one of the first resonator and the second resonator extends from the first end toward the second end in a manner that the first resonator conductor layer comes away from or closer to another one of the first resonator and the second resonator.
9 more elements
Dependencies are inferred from the claim text.