Waveguide for propagation velocity compensated position measurement magnetic sensor
AssigneeLittelfuse, Inc.
InventorsEfrem Fesshaie, Paulius Kabisius
Life of this patent
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Abstract
Provided are waveguide sensors and position sensing systems. In some embodiments, a position sensing system may include a waveguide configured to receive and transmit a pulse, and a magnet moveable relative to the waveguide. The waveguide may include a first core layer and a second core layer, a magnetic layer between the first and second core layers, and a conductive winding around the first core layer, the second core layer, and the magnetic layer. The position sensing system may further include a first substrate layer above the conductive winding and a second substrate layer below the conductive winding.
Claims19
A position sensing system, comprising:
- a waveguide configured to receive and transmit a pulse;
- a magnet moveable relative to the waveguide, wherein the waveguide comprises:
- a first core layer and a second core layer;
- a magnetic layer between the first and second core layer;
- a conductive winding around the first core layer, the second core layer, and the magnetic layer;
- a first substrate layer above the winding and a second substrate layer below the winding;
- and
- a first plating layer over the first core layer, wherein the first substrate layer is formed directly atop the first plating layer, wherein the first plating layer is a reference plane made from a conductive material, and wherein the first and second core layers are made from a FR-4 copper-clad laminate.
A position sensing system, comprising:
- a waveguide configured to receive and transmit a pulse, the waveguide configured as a stack of layers;
- a magnet moveable relative to the waveguide, wherein the stack of layers of the waveguide comprises:
- a first core layer and a second core layer;
- a magnetic layer between the first and second core layer;
- a conductive winding around the first core layer, the second core layer, and the magnetic layer;
- a first substrate layer above the conductive winding and a second substrate layer below the conductive winding;
- and
- a second magnetic layer between the first core layer and the first substrate layer.
A waveguide for receiving and transmitting a pulse, the waveguide comprising:
- a first core layer and a second core layer;
- a magnetic layer between the first and second core layers, the magnetic layer embedded within an insulative material;
- a conductive winding around the first core layer, the second core layer, and the magnetic layer;
- a first substrate layer above the conductive winding and a second substrate layer below the conductive winding;
- and
- a first plating layer over the first core layer, wherein the first substrate layer is formed directly atop the first plating layer, wherein the first plating layer is a reference plane made from a conductive material, and wherein the first and second core layers are made from a FR-4 copper-clad laminate.
Dependencies are inferred from the claim text.