| 摘要 |
<p>A first reception wiring 32a and a first magnetic flux coupler 41a form a first track having a shape periodically changing in a rotation direction of the rotor 15 at a first pitch. A second reception wiring 32b and a second magnetic flux coupler 41b form a second track having a shape periodically changing in a rotation direction of the rotor 15 at a second pitch. The first reception wiring 32a and the second reception wiring 32b are stacked via a first insulative layer in a direction in which a rotation shaft extends. The first magnetic flux coupler 41a and the second magnetic flux coupler 41b are stacked via a second insulative layer in a direction in which the rotation shaft extends.
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