Importance

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Abstract

Disclosed is a balanced to unbalanced converter, which relates to the field of semiconductor technologies. The balanced to unbalanced converter includes a first spiral coil and a second spiral coil. The first spiral coil includes: multiple rings of first metal wires; and a second metal wire, which is located above the multiple rings of first metal wires and is connected to an innermost ring of the first metal wires using a conductive plug. The second spiral coil includes: multiple rings of third metal wires, adjacent third metal wires being separated by one ring of the first metal wires; and multiple rings of fourth metal wires that are located above the multiple rings of the third metal wires, each ring of the fourth metal wires being connected to one ring of the third metal wires by the conductive plug, a fourth metal wire closer to an outer ring being connected to a third metal wire closer to an outer ring, and a fourth metal wire closer to an inner ring being connected to a third metal wire closer to an inner ring. The second metal wire and the innermost ring of the first metal wires do not overlap in a vertical direction, and at least one of the multiple rings of the fourth metal wires and the third metal wire connected to the fourth metal wire do not overlap in the vertical direction.

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First Claim