High efficiency on-chip 3D transformer structure
First Claim
1. An integrated circuit transformer structure, comprising:
- at least two conductor groups stacked in parallel in different layers;
a first spiral track formed in the at least two conductor groups, the first spiral track including;
first turns of a same first radius within each of the at least two conductor groups, andsecond turns of a same second radius within each of the at least two conductor groups, the first and second turns being electrically connected; and
a second spiral track formed in the at least two conductor groups, the second spiral track including third turns of a same third radius within each of the at least two conductor groups and disposed in a same plane between the first and second turns in each of the at least two conductor groups,wherein one of the first turns is electrically connected to one of the second turns through a connection that is electrically isolated from one of the third turns.
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Accused Products
Abstract
An integrated circuit transformer structure includes at least two conductor groups stacked in parallel in different layers. A first spiral track is formed in the at least two conductor groups, the first spiral track included first turns of a first radius within each of the at least two conductor groups, and second turns of a second radius within each of the at least two conductor groups, the first and second turns being electrically connected. A second spiral track is formed in the at least two conductor groups, the second spiral track including third turns of a third radius within each of the at least two conductor groups and disposed in a same plane between the first and second turns in each of the at least two conductor groups.
37 Citations
2 Claims
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1. An integrated circuit transformer structure, comprising:
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at least two conductor groups stacked in parallel in different layers; a first spiral track formed in the at least two conductor groups, the first spiral track including; first turns of a same first radius within each of the at least two conductor groups, and second turns of a same second radius within each of the at least two conductor groups, the first and second turns being electrically connected; and a second spiral track formed in the at least two conductor groups, the second spiral track including third turns of a same third radius within each of the at least two conductor groups and disposed in a same plane between the first and second turns in each of the at least two conductor groups, wherein one of the first turns is electrically connected to one of the second turns through a connection that is electrically isolated from one of the third turns.
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2. An integrated circuit transformer structure, comprising:
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at least two conductor groups, each conductor group forming a spiral, the spirals of the at least two conductor groups being stacked in parallel in different layers; the spirals including; turns of a same first radius connected in series between the layers to form a first cylinder of turns within the at least two conductor groups; turns of a same second radius connected in series between the layers to form a second cylinder of turns within the at least two conductor groups; and turns of a same third radius connected in series between the layers to form a third cylinder of turns within the at least two conductor groups, wherein the first and the third cylinder are electrically connected to each other and electrically isolated from the second cylinder, wherein the first cylinder is electrically connected to the third cylinder through a connection that is electrically isolated from the second cylinder.
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Specification