Multi-turn coil structure including crossover connections for inductive angular-position sensor

An apparatus, comprising:

• a support structure;
• and
• a single pair of crossover connections in an inter-lobe region of a sense coil, the sense coil comprising conductive traces on, or in, multiple layers of the support structure, the sense coil comprising a first coil portion defining a first path for electrical current to flow in a first direction around an axis of the support structure and a second coil portion defining a second path for electrical current to flow in a second direction around the axis, the first coil portion having M turns around the axis defining multiple in-phase lobes and the second coil portion having N turns around the axis defining multiple out-of-phase lobes, where M=N=2 or 3, the inter-lobe region comprising a region at which an in-phase lobe of the first coil portion meets with an out-of-phase lobe of the second coil portion, the single pair of crossover connections including:
• a first crossover connection to connect an ending portion of an Mth turn of the first coil portion of the in-phase lobe to a starting portion of a first turn of the second coil portion of the out-of-phase lobe;
• and
• a second crossover connection to connect an ending portion of an Nth turn of the second coil portion of the out-of-phase lobe to a starting portion of a first turn of the first coil portion of the in-phase lobe.

An apparatus comprising:

• a support structure;
• and
• a sense coil comprising conductive traces on, or in, multiple layers of the support structure, the sense coil comprising:
• a first coil portion defining a first path for electrical current to flow in a first direction around an axis of the support structure, the first coil portion having M turns around the axis defining an in-phase lobe, where M is an integer number greater than or equal to two;
• a second coil portion defining a second path for the electrical current to flow in a second direction around the axis, the second direction opposite the first direction, the second coil portion having N turns around the axis defining an out-of-phase lobe, where N is an integer number greater than or equal to two;
• and
• crossover connections including:
• a first crossover connection to connect an ending portion of an Mth turn of the first coil portion of the in-phase lobe to a starting portion of a first turn of the second coil portion of the out-of-phase lobe;
• and
• a second crossover connection to connect an ending portion of an Nth turn of the second coil portion of the out-of-phase lobe to a starting portion of a first turn of the first coil portion of the in-phase lobe.