Common mode choke
AssigneeNexperia B.V.
InventorHans-Martin Ritter
Life of this patent
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Abstract
A common mode choke comprising a first planar coil for receiving a first signal, a second planar coil for receiving a second signal, the first and second coils comprising substantially mirror images of one another and arranged side by side in a common plane, the first planar coil and second planar coil electromagnetically coupled by a closed coupling loop.
Claims15
A common mode choke configured to receive a differential signal over a first signal channel and a second signal channel comprising:
- a first planar coil forming the first signal channel for receiving a first signal component of the differential signal,
- a second planar coil forming the second signal channel for receiving a second signal component of the differential signal, the first and second planar coils comprising substantially mirror images of one another and arranged side by side in a common plane,
- the first planar coil and second planar coil being electromagnetically coupled by a closed coupling loop, wherein the closed coupling loop comprises a first coil portion arranged in a path complementary to at least a portion of the first planar coil, a second coil portion arranged in a path complementary to at least a portion of the second planar coil, and
- a connecting portion arranged to connect the first and second coil portions to form a closed loop, wherein the connecting portion comprises:
- a first track and a second track, the first track configured to connect a first end of the first coil portion to a corresponding first end of the second coil portion and the second track configured to connect a second end of the first coil portion to a corresponding second end of the second coil portion, the first and second tracks being configured to extend in the same plane.
A common mode choke configured to receive a differential signal over a first signal channel and a second signal channel comprising:
- a first planar coil forming the first signal channel for receiving a first signal component of the differential signal,
- a second planar coil forming the second signal channel for receiving a second signal component of the differential signal, the first and second planar coils comprising substantially mirror images of one another and arranged side by side in a common plane,
- the first planar coil and second planar coil being electromagnetically coupled by a closed coupling loop, wherein the closed coupling loop comprises a first coil portion arranged in a path complementary to at least a portion of the first planar coil, a second coil portion arranged in a path complementary to at least a portion of the second planar coil, and
- a connecting portion arranged to connect the first and second coil portions to form a closed loop, wherein the connecting portion comprises:
- a first track and a second track, the first track configured to connect a first end of the first coil portion to a complementary first end of the second coil portion and the second track configured to connect a second end of the first coil portion to a complementary second end of the second coil portion, the first and second tracks being configured to extend in different planes.
The common mode choke of 5, wherein at least two of the plurality of closed coupling loops extend in the same plane.
Dependencies are inferred from the claim text.