Compact printed circuit board for an inductive sensor for measuring angular position

A printed circuit board (700) for an inductive sensor intended for measuring the angular position of a target, the printed circuit board (700) comprising:

• at least two secondary windings (22a, 22b;
• 42, 42b, 42c;
• 52a, 52b;
• 62a;
• 72a) each formed by at least one pair of loops, called pair of poles (23;
• 53), with said loops surrounding respective surfaces with the same dimensions while being oriented in opposite directions and each being made up of one or more turns, and each pair of poles extending along an arc of a circle equal to 360°/Ntot, with Ntot being an integer greater than or equal to 2;
• and
• a primary winding (21;
• 41;
• 51;
• 61;
• 71), surrounding the secondary windings;
• wherein:
• each secondary winding (22a;
• 22b;
• 42;
• 42b;
• 42c;
• 52a;
• 52b;
• 62a;
• 72a) comprises a number N0 of pairs of poles, with 1≤N0≤(Ntot−1);
• characterized in that the primary winding (21;
• 41;
• 51;
• 61;
• 71):
• has at least one portion (211;
• 611c, 611d) in the form of an arc of a circle and at least one line (212;
• 612c, 612d) that connects two ends (213, 214) of the at least one portion in the form of an arc of a circle;
• and
• delimits a surface of interest (S1) inscribed inside a disc, called useful disc (D1), with a ratio between the area of the surface of interest and the area of the useful disc that ranges between 70% and 99%, with the surface of interest (S1) passing through the center of the useful disc (D1).