Transformer for integrated circuits
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United States of America Patent
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Feb 29, 2000
Grant Date -
N/A
app pub date -
Nov 25, 1998
filing date -
Nov 28, 1997
priority date (Note) -
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Abstract
A invention provides a transformer for use in integrated circuits, comprising four layers of conductive lines, separated from each other by first, second and third insulating layers. First conductive vias traverse the second insulating layer to connect said second and third pluralities of conducting lines, to form a first winding. Second conductive vias traverse the first, second and third insulating layers to connect said first and fourth pluralities of conducting lines to form a second winding, about and approximately concentric with said first winding.
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