Pseudo-8-shaped inductor
First Claim
Patent Images
1. A device, comprising:
- a first inductor comprising;
a first coil portion having more than one turn that defines a first enclosed area; and
a second coil portion having more than one turn that defines a second enclosed area,wherein the first coil portion and the second coil portion are arranged to generate magnetic fields having substantially equal strength and opposite directions, and the first coil portion twisted in a first direction and the second coil portion twisted in a second direction that is different from the first direction, the first coil portion having a first pair of internal crosses crossing the first coil portion, the second coil portion having a second pair of internal crosses crossing the second coil portion, the first coil portion and the second coil portion being coupled without using any of the first and second pairs of internal crosses, the first inductor being implemented in a first metal layer, and the first and second pairs of internal crosses being implemented in a second metal layer that has a higher sheet resistance than the first metal layer.
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Abstract
Aspects of the disclosure provide a device that includes a first inductor. The first inductor includes a first coil portion having more than one turn that defines a first enclosed area and a second coil portion having more than one turn that defines a second enclosed area. The first coil portion and the second coil portion are arranged to generate magnetic fields having substantially equal strength and opposite directions.
32 Citations
16 Claims
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1. A device, comprising:
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a first inductor comprising; a first coil portion having more than one turn that defines a first enclosed area; and a second coil portion having more than one turn that defines a second enclosed area, wherein the first coil portion and the second coil portion are arranged to generate magnetic fields having substantially equal strength and opposite directions, and the first coil portion twisted in a first direction and the second coil portion twisted in a second direction that is different from the first direction, the first coil portion having a first pair of internal crosses crossing the first coil portion, the second coil portion having a second pair of internal crosses crossing the second coil portion, the first coil portion and the second coil portion being coupled without using any of the first and second pairs of internal crosses, the first inductor being implemented in a first metal layer, and the first and second pairs of internal crosses being implemented in a second metal layer that has a higher sheet resistance than the first metal layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An integrated circuit (IC) chip, comprising:
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a first inductor formed on a substrate of the IC chip, the first inductor comprising; a first coil portion having more than one turn that defines a first enclosed area; and a second coil portion having more than one turn that defines a second enclosed area, wherein the first coil portion and the second coil portion are arranged to generate magnetic fields having substantially equal strength and opposite directions, the first coil portion twisted in a first direction and the second coil portion twisted in a second direction that is different from the first direction, the first coil portion having a first pair of internal crosses crossing the first coil portion, the second coil portion having a second pair of internal crosses crossing the second coil portion, the first coil portion and the second coil portion being coupled without using any of the first and second pairs of internal crosses, the first inductor being implemented in a first metal layer, and the first and second pairs of internal crosses being implemented in a second metal layer that has a higher sheet resistance than the first metal layer. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification