Patent ID: 11921173
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method of determining a first and a second angle indicative of an orientation of a magnet which is pivotable about a reference point having a predefined position relative to a semiconductor substrate, the method comprising:
a) determining at least iii) and iv) of the following magnetic field gradients:
i) a first magnetic field gradient of a first magnetic field component oriented in a first direction parallel to a semiconductor substrate along said first direction;
ii) a second magnetic field gradient of a second magnetic field component oriented in a second direction parallel to the semiconductor substrate and perpendicular to the first direction, along said second direction;
iii) a third magnetic field gradient of a third magnetic field component oriented in a third direction perpendicular to the first direction along said first direction;
iv) a fourth magnetic field gradient of the third magnetic field component oriented in a fourth direction perpendicular to the second direction along said second direction;

b) determining said first angle formed between an orthogonal projection of the axis of the magnet on a first virtual plane parallel to the first direction and the third direction, based on at least the third magnetic field gradient; and
c) determining said second angle formed between an orthogonal projection of the axis of the magnet on a second virtual plane parallel to the second direction and the third direction, based on at least the fourth magnetic field gradient.