Advanced 3D inductor structures with confined magnetic field
First Claim
1. An apparatus, comprising:
- a substrate;
an inductor residing in the substrate wherein the inductor comprises a conductive path that extends from a first terminal to a second terminal, wherein;
the conductive path has a shape corresponding to a two-dimensional (2D) lobe laid over a three-dimensional (3D) volume such that the inductor forms a first turn and a second turn that face one another and are substantially symmetrical with respect to a first plane and a third turn and a fourth turn that are substantially symmetrical and face one another with respect to a second plane;
the first plane and the second plane are substantially orthogonal to one another; and
the 2D lobe is open so as to define a gap in the 2D lobe between the first terminal and the second terminal and the 2D lobe is formed such that the 2D lobe extends out of the first terminal away from the gap and loops back to the second terminal towards the gap.
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Accused Products
Abstract
Embodiments of an apparatus that includes a substrate and an inductor residing in the substrate are disclosed. In one embodiment, the inductor is formed as a conductive path that extends from a first terminal to a second terminal. The conductive path has a shape corresponding to a two-dimensional (2D) lobe laid over a three-dimensional (3D) volume. Since the shape of the conductive path corresponds to the 2D lobe laid over a 3D volume, the magnetic field generated by the inductor has magnetic field lines that are predominately destructive outside the inductor and magnetic field lines that are predominately constructive inside the inductor. In this manner, the inductor can maintain a high quality (Q) factor while being placed close to other components.
155 Citations
23 Claims
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1. An apparatus, comprising:
a substrate; an inductor residing in the substrate wherein the inductor comprises a conductive path that extends from a first terminal to a second terminal, wherein; the conductive path has a shape corresponding to a two-dimensional (2D) lobe laid over a three-dimensional (3D) volume such that the inductor forms a first turn and a second turn that face one another and are substantially symmetrical with respect to a first plane and a third turn and a fourth turn that are substantially symmetrical and face one another with respect to a second plane; the first plane and the second plane are substantially orthogonal to one another; and the 2D lobe is open so as to define a gap in the 2D lobe between the first terminal and the second terminal and the 2D lobe is formed such that the 2D lobe extends out of the first terminal away from the gap and loops back to the second terminal towards the gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
Specification