A sensor arrangement comprising: - a rotatable shaft (210; 410; 101) extending along a rotation axis; - a magnet module (106; 206; 306; 700; 800) coupled to the rotatable shaft (210; 410; 101) configured to generate a magnetic field; and - a sensing element configured to sense a rotating magnetic field caused by the magnet module (106; 206; 306; 700; 800) upon rotation of the rotatable shaft (210; 410; 101) around the rotation axis, and wherein the rotatable shaft (210; 410; 101) comprises a bore extending within a shaft end portion along the rotation axis, wherein the magnet module is coupled to at least one face of the bore and configured to generate the magnetic field within the bore, and wherein the sensing element has a sensitive spot, the sensitive spot being arranged within the bore and exposed to the rotating magnetic field, wherein the sensor arrangement is configured to identify an angular position of the rotatable shaft unambiguously over 360 degrees, wherein the rotatable shaft (210; 410; 101)provides shielding to the sensing element , characterized in that the magnet module includes a ring shaped magnet, an outer perimeter of the magnet matches a shape of the bore, and the ring shaped magnet has an elliptical bore and one of: - a circular outer perimeter - an elliptical outer perimeter, - a non-circular outer perimeter. - a rotatable shaft (210; 410; 101) extending along a rotation axis; - a magnet module (106; 206; 306; 700; 800) coupled to the rotatable shaft (210; 410; 101) configured to generate a magnetic field; and - a sensing element configured to sense a rotating magnetic field caused by the magnet module (106; 206; 306; 700; 800) upon rotation of the rotatable shaft (210; 410; 101) around the rotation axis, and wherein the rotatable shaft (210; 410; 101) comprises a bore extending within a shaft end portion along the rotation axis, wherein the magnet module is coupled to at least one face of the bore and configured to generate the magnetic field within the bore, and wherein the sensing element has a sensitive spot, the sensitive spot being arranged within the bore and exposed to the rotating magnetic field, wherein the sensor arrangement is configured to identify an angular position of the rotatable shaft unambiguously over 360 degrees, wherein the rotatable shaft (210; 410; 101)provides shielding to the sensing element , characterized in that the magnet module includes a ring shaped magnet, an outer perimeter of the magnet matches a shape of the bore, and the ring shaped magnet has an elliptical bore and one of: - a circular outer perimeter - an elliptical outer perimeter, - a non-circular outer perimeter. wherein the sensor arrangement is configured to identify an angular position of the rotatable shaft unambiguously over 360 degrees, wherein the rotatable shaft (210; 410; 101)provides shielding to the sensing element , characterized in that the magnet module includes a ring shaped magnet, an outer perimeter of the magnet matches a shape of the bore, and the ring shaped magnet has an elliptical bore and one of: - a circular outer perimeter - an elliptical outer perimeter, - a non-circular outer perimeter. - a circular outer perimeter - an elliptical outer perimeter, - a non-circular outer perimeter. <EOS>