Magnetic composite sheet and electromagnetic induction module

An electromagnetic induction module comprising:

• a magnetic composite sheet including a magnetic layer including first and second magnetic pieces having different sizes and a cover film formed on one surface or both surfaces of the magnetic layer;
• and
• an antenna part formed on a region of the magnetic composite sheet having the first magnetic piece disposed therein,
• wherein, in a cross-section of the magnetic composite sheet taken in a direction parallel to a direction in which the magnetic layer and the cover film are laminated, when a length of the first magnetic piece in a vertical direction is a and a length thereof in a horizontal direction is b, and a length of the second magnetic piece in the vertical direction is a′ and a length thereof in the horizontal direction is b′, b/a is greater than b′/a′(b/a>b′/a′).