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US 12,586,881 B2Granted
Multilayered filter device
AssigneeTDK Corporation
InventorNaoyuki Mori
Life of this patent
Estimating the term…
Abstract
A filter device includes a first filter including a first inductor, a second filter including a second inductor, a third filter including a third inductor, and a fourth filter including a fourth inductor. The first to fourth inductors are arranged in a manner that an opening of the first inductor and an opening of the third inductor face each other, an opening of the second inductor and an opening of the fourth inductor face each other, the opening of the first inductor and the opening of the second inductor do not face each other, and the opening of the third inductor and the opening of the fourth inductor do not face each other.
Claims12
A multilayered filter device comprising:
- a first filter which is a low-pass filter including a first inductor;
- a second filter which is a low-pass filter including a second inductor;
- a third filter which is a high-pass filter including a third inductor;
- a fourth filter which is a high-pass filter including a fourth inductor;
- and
- a stack for integrating the first filter, the second filter, the third filter, and the fourth filter, the stack including a plurality of dielectric layers stacked together, wherein
- each of the first inductor, the second inductor, the third inductor, and the fourth inductor is wound around an axis orthogonal to a stacking direction of the dielectric layers,
- the first inductor, the second inductor, the third inductor, and the fourth inductor are arranged in a manner that an opening of the first inductor and an opening of the third inductor face each other, an opening of the second inductor and an opening of the fourth inductor face each other, the opening of the first inductor and the opening of the second inductor do not face each other, and the opening of the third inductor and the opening of the fourth inductor do not face each other, and
- the first filter and the second filter are provided between the third filter and the fourth filter in a circuit configuration.
6 more elements
A multilayered filter device comprising:
- a first filter which is a low-pass filter including a first inductor;
- a second filter which is a low-pass filter including a second inductor;
- a third filter which is a high-pass filter including a third inductor;
- a fourth filter which is a high-pass filter including a fourth inductor;
- and
- a stack for integrating the first filter, the second filter, the third filter, and the fourth filter, the stack including a plurality of dielectric layers stacked together, wherein
- each of the first inductor, the second inductor, the third inductor, and the fourth inductor is wound around an axis orthogonal to a stacking direction of the dielectric layers,
- the first inductor, the second inductor, the third inductor, and the fourth inductor are arranged in a manner that an opening of the first inductor and an opening of the third inductor face each other, an opening of the second inductor and an opening of the fourth inductor face each other, the opening of the first inductor and the opening of the second inductor do not face each other, and the opening of the third inductor and the opening of the fourth inductor do not face each other,
- the first inductor and the third inductor are arranged along a first direction orthogonal to the stacking direction,
- the second inductor and the fourth inductor are arranged along the first direction,
- the first inductor and the second inductor are arranged along a second direction orthogonal to the stacking direction and the first direction, and
- the third inductor and the fourth inductor are arranged along the second direction.
9 more elements
A multilayered filter device comprising:
- a first filter which is a low-pass filter including a first inductor;
- a second filter which is a low-pass filter including a second inductor;
- a third filter which is a high-pass filter including a third inductor;
- a fourth filter which is a high-pass filter including a fourth inductor;
- and
- a stack for integrating the first filter, the second filter, the third filter, and the fourth filter, the stack including a plurality of dielectric layers stacked together, wherein
- each of the first inductor, the second inductor, the third inductor, and the fourth inductor is wound around an axis orthogonal to a stacking direction of the dielectric layers,
- the first inductor, the second inductor, the third inductor, and the fourth inductor are arranged in a manner that an opening of the first inductor and an opening of the third inductor face each other, an opening of the second inductor and an opening of the fourth inductor face each other, the opening of the first inductor and the opening of the second inductor do not face each other, and the opening of the third inductor and the opening of the fourth inductor do not face each other,
- each of the first inductor, the second inductor, the third inductor, and the fourth inductor includes a first through hole line, a second through hole line, and an inductor conductor layer electrically connected to one end of the first through hole line and one end of the second through hole line,
- each of the first through hole line and the second through hole line is formed by a plurality of through holes being connected in series,
- the stack has a shape that is long in one direction orthogonal to the stacking direction in a plan view seen from the stacking direction, and
- the inductor conductor layer of each of the first inductor, the second inductor, the third inductor, and the fourth inductor extends along the one direction orthogonal to the stacking direction.
9 more elements
Dependencies are inferred from the claim text.