Sensor assembly for detecting a rotational angle of a flux element which is rotatable along a circular path about a rotation axis, - having the at least one flux element; and - having at least one coil group (165a-c) having in each case at least one flat coil (160a-i), wherein at least two flat coils (16a-i) are present; - wherein the flat coils (160a-i) extend in each case along a face which concentrically surrounds the rotation axis; - wherein the face runs in parallel along the circular path, and all flat coils (160a-i) of one coil group (165a-c) extend in each case across the same rotational angular range (Wa-c); - wherein the flat coils (160a-i) are shaped in such a manner that a current inductance (La-i) of each flat coil (160a-i) is a function of the current rotational angle of the flux element; - having an evaluation installation which is specified for determining the current inductance (La-i) for each of the flat coils (160a-i) and for determining a current respective individual rotational angle (Ea-i) of the flux element by means of the determined inductance (La-i) of the respective flat coil (160a-i), and for providing the rotational angle of the flux element based on at least two matching individual rotational angles (Ea-i); - wherein at least two of the flat coils (160a-i) are shaped in such a manner that a current size of a region of the flat coils (160a-i) currently covered by the flux element is in each case a function of the current rotational angle of the flux element; - wherein the rotational angle range (Wa-c) of at least one of the coil groups (165a-c) extends between a start angle and a finish angle, and a width of such a first flat coil (160a-i) of the coil group (165a-c), proceeding from the start angle, decreases in each case transversely to the circular path, and a width of such a second flat coil (160a-i) of the coil group (165a-c), proceeding from the start angle, increases in each case; - wherein at least one of the coil groups (165a-c) contains at least three flat coils (160a-i), wherein a second flat coil (160a-i) in a direction transverse to the circular path lies between the first flat coil (160a-i) and the third flat coil (160a-i). - having the at least one flux element; and - having at least one coil group (165a-c) having in each case at least one flat coil (160a-i), wherein at least two flat coils (16a-i) are present; - wherein the flat coils (160a-i) extend in each case along a face which concentrically surrounds the rotation axis; - wherein the face runs in parallel along the circular path, and all flat coils (160a-i) of one coil group (165a-c) extend in each case across the same rotational angular range (Wa-c); - wherein the flat coils (160a-i) are shaped in such a manner that a current inductance (La-i) of each flat coil (160a-i) is a function of the current rotational angle of the flux element; - having an evaluation installation which is specified for determining the current inductance (La-i) for each of the flat coils (160a-i) and for determining a current respective individual rotational angle (Ea-i) of the flux element by means of the determined inductance (La-i) of the respective flat coil (160a-i), and for providing the rotational angle of the flux element based on at least two matching individual rotational angles (Ea-i); - wherein at least two of the flat coils (160a-i) are shaped in such a manner that a current size of a region of the flat coils (160a-i) currently covered by the flux element is in each case a function of the current rotational angle of the flux element; - wherein the rotational angle range (Wa-c) of at least one of the coil groups (165a-c) extends between a start angle and a finish angle, and a width of such a first flat coil (160a-i) of the coil group (165a-c), proceeding from the start angle, decreases in each case transversely to the circular path, and a width of such a second flat coil (160a-i) of the coil group (165a-c), proceeding from the start angle, increases in each case; - wherein at least one of the coil groups (165a-c) contains at least three flat coils (160a-i), wherein a second flat coil (160a-i) in a direction transverse to the circular path lies between the first flat coil (160a-i) and the third flat coil (160a-i).