US 2018/0097497 A1Published application

Differential mode filter

AssigneeTKD Corporation

InventorsTsutomu KOBAYASHI, Toshio TOMONARI, Emi ITO, Yuma KOMAYA

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Abstract

Disclosed herein is a differential mode filter that includes first and second terminal electrodes provided on a first flange part of a core, and first and second wires wound around a winding core part of the core in an opposite direction to each other and connected respectively to the first and second terminal electrodes. The first and second wires cross each other on the winding core part to form a plurality of crossing portions that include first, second, and third crossing portions that are first, second, and third occurrences counting from the one end of the first and second wires, respectively. A first crossing angle between the first and second wires at the first crossing portion is larger than at least one of second and third crossing angles between the first and second wires at the second and third portions, respectively.

Claims18

Dependent claims

A differential mode filter comprising:

a core having a winding core part extending in an axial direction and a first flange part provided at one end of the winding core part in the axial direction;
first and second terminal electrodes provided on the first flange part;
a first wire wound around the winding core part in a first winding direction and having one end connected to the first terminal electrode;
and
a second wire wound around the winding core part in a second winding direction opposite to the first winding direction and having one end connected to the second terminal electrode,
wherein the first and second wires cross each other on the winding core part to form a plurality of crossing portions that include first, second, and third crossing portions that are first, second, and third occurrences counting from the one end of the first and second wires, respectively, and
wherein a first crossing angle between the first and second wires at the first crossing portion is larger than at least one of second and third crossing angles between the first and second wires at the second and third portions, respectively.

4 more elements

A differential mode filter comprising:

a core having a winding core part extending in an axial direction, a first flange part provided at one end of the winding core part in the axial direction, and a second flange part provided at other end of the winding core part in the axial direction;
first and second terminal electrodes provided on the first flange part;
third and fourth terminal electrodes provided on the second flange part;
a first wire wound around the winding core part in a first winding direction and having one and other ends connected respectively to the first and third terminal electrodes;
and
a second wire wound around the winding core part in a second winding direction opposite to the first winding direction and having one and other ends connected respectively to the second and fourth terminal electrodes,
wherein the first and second wires cross each other on the winding core part to form a plurality of crossing portions that include first, second, and a plurality of third crossing portions, the first crossing portion being a first occurrence counting from the one end of the first and second wires, the second crossing portion being a first occurrence counting from the other end of the first and second wires, the third crossing portions being positioned between the first crossing portion and the second crossing portion, and
wherein at least one of a first crossing angle between the first and second wires at the first crossing portion and a second crossing angle between the first and second wires at the second crossing portion is larger than an average value of third crossing angles between the first and second wires at the third crossing portions.

5 more elements

A differential mode filter comprising:

a core having a winding core part extending in an axial direction, a first flange part provided at one end of the winding core part in the axial direction, and a second flange part provided at other end of the winding core part in the axial direction;
first and second terminal electrodes provided on the first flange part;
third and fourth terminal electrodes provided on the second flange part;
a first wire wound around the winding core part in a first winding direction and having one and other ends connected respectively to the first and third terminal electrodes;
and
a second wire wound around the winding core part in a second winding direction opposite to the first winding direction and having one and other ends connected respectively to the second and fourth terminal electrodes,
wherein the first and second wires cross each other on the winding core part to form a plurality of crossing portions that include first and second crossing portions, the first crossing portion being a first occurrence counting from the one end of the first and second wires, the second crossing portion being a first occurrence counting from the other end of the first and second wires, and
wherein a first crossing angle between the first and second wires at the first crossing portion is larger than a second crossing angle between the first and second wires at the second crossing portion.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/723,392Filed 3 Oct 2017
Priority: JP 2016-1969005 Oct 2016
Published: 5 Apr 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H03H 7/09
Frequency selective two-port networks: filters comprising mutual inductance
H01F 17/045
With magnetic core: with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
H01F 19/00
Fixed transformers or mutual inductances of the signal type
H01F 19/08
Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range: transformers having magnetic bias, e.g.…