Noise reduction filter array

A noise reduction filter array, comprising:

• two inductance portions each comprising first and second coils which are electrically connected together, one of the first and second coils being put on top of the other;
• a first ground portion arranged over the inductance portions and a second ground portion arranged under the inductance portions;
• and
• a first capacitance portion arranged under the first ground portion and a second capacitance portion arranged over the second ground portion;
• wherein the first coils of said inductance portions are wound in the same direction, and the second coils of said inductance portions are wound in opposite directions.

A noise reduction filter array, comprising:

• two inductance portions each comprising first and second coils which are electrically connected together, one of the first and second coils being put on top of the other;
• a ground portion arranged over or under the inductance portions;
• and
• a capacitance portion arranged over or under the ground portion;
• wherein the first coils of said inductance portions are wound in the same direction, and the second coils of said inductance portions are wound in opposite directions;
• said noise reduction filter array further comprising, for each of said inductance portions, isolation means positioned between the first and second coils for blocking electromagnetic influence therebetween.

A noise reduction filter array, comprising a plurality of filters horizontally arranged side by side within a single chip, each filter comprising:

• an inductance portion comprising first and second coils which are serially electrically connected together, the first coil being vertically arranged on top of the second coil;
• a ground portion vertically arranged at at least one position over or under the inductance portion;
• a capacitance portion vertically arranged over or under the ground portion;
• and
• isolation means for blocking electromagnetic influence between the first and second coils of the inductance portion;
• wherein, for two adjacent said filters, the first coils of the inductance portions of said adjacent filters are wound in the same direction, and the second coils of the inductance portions of said adjacent filters are wound in opposite directions.