received by the International Bureau on 20 May 2016 (20.05.16)

1. A non-stationary magnetic field emitter with at least partially ferrite core (1), whereby a conductor (4) with at least three threads (2) is wound on the core (1),

and the core has an oblong transverse cross-section, where a width of the cross-section of the core (1) is at least three times more than a height of the cross-section of the core (1) and a length of the core (1) is at least 10 times more that a height of the core (1), i s characterized by the fact, that

the conductor (4) is wound on the core (1) with a changing distance (p, pitch) between the middles of two adjacent threads (2) of the conductor (4) in such a way that the distance (p, pitch) between the middles of two adjacent threads (2) increases from a middle zone (3) of the core (1) towards an end of the core (1).

2. The non-stationary magnetic field emitter according to claim l i s characterized by the fact, that an increase of distance (p, pitch) between the middles of two adjacent threads (2) is linear, preferably with the increase in the p + Δ for each following thread (2).

3. The non-stationary magnetic field emitter according to claim 2 i s characterized by the fact, that an increment of the lead Δ ranges between 10 and 30% of a width of the conductor (4) of the thread (2) in the middle zone (3), preferably 20% of the width of the conductor (4) of the thread (2) in the middle zone (3).

4. The non-stationary magnetic field emitter according to claim l i s characterized by th e fact, that the increase of the distance (p, pitch) between the middles of two adjacent threads (2) is non-linear.

5. The non-stationary magnetic field emitter according to any of the claims 1 to 4 i s characterized by the f act, that the core (1) is 0,5 mm high in the cross- section, preferably up to 0,3 mm, and 2 to 2,5 mm wide in the cross-section.

6. The non-stationary magnetic field emitter according to any of the claims 1 to 5 i s ch aracterized by the f act, that a width w of a single thread (2) in the middle zone (3) is in a range r_e/2 < w < 1,5 r_e, where r_e is an equivalent radius, whereby the equivalent radius is a radius of a circular core (1) which has the cross-section's surface identical to a rectangular cross-section of the core (1) with sides a, b.

7. The non-stationary magnetic field emitter according to any of the claims 1 to 6 i s ch aracterized by the f act, that the conductor (4) of a winding is flat, preferably with the width surpassing the double of the height of the conductor (4) in a

1 cross-section; the conductor (4) has in an unwound state a shape of a strip with a changing direction of lines of cranking, which correspond to places of bending around the edge of the core (1).

8. The non-stationary magnetic field emitter according to any of the claims 1 to 6 i s characterized by the f act, that the conductor (4) of the winding is produced by an application of a metal layer onto the surface of the core (1) with gaps between the threads (2).

9. The non-stationary magnetic field emitter according to any of the claims 1 to 8 i s ch aracterized by the f act, that the winding of single thread (2) includes multiple conductors (41 to 4N) led in parallel to each other forming multi-degree thread (2); these conductors (41 to 4N) of single thread (2) are electrically connected, preferably connected alongside the sides of the core (1).

10. The non-stationary magnetic field emitter according to the claim 9 is ch aracterized by the f act, that the multi-degree conductors (41 to 4N) are at ends of the winding led and connected to connecting surfaces (7) where the conductors (4) are mutually distanced from each other.

11. The non-stationary magnetic field emitter according to the claim 9 or 10 i s ch aracterized by the f act, that for at least four multi-degree conductors (41 to 4N) of single thread (2) only outer conductors (41, 4N) of single thread (2) are electrically isolated.

12. The non-stationary magnetic field emitter according to any of the claims 9 to 11 i s characterized by the f act, that with the increase in the pitch (p) of the threads (2) the conductors (41 to 4N) of single thread (2) begin to diverge, too, and a resulting increasing gap is distributed between all conductors (41 to 4N).

13. The non-stationary magnetic field emitter according to any of the claims 1 to 12 i s ch aracterized by the f act, that the core (1) is created by a ferrite rod placed on a non-conductive pad (6); the non-conductive pad (6) has a width corresponding to the width of the core (1); the non-conductive pad (6) has a length identical to or surpassing the length of the core (1); the conductors (4) of the threads (2) are mechanically wound through the ferrite rod and also through the non-conductive pad (6) so the winding of the conductor (4) connects the core (1) with the non-conductive pad (6); the non-conductive pad (6) has the connecting surfaces (7) by the sides of the core (1) for interconnection of the conductors (4) of the winding and for the interconnection of the emitter with a body of a host device.

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14. The non-stationary magnetic field emitter according to the claims 13 is ch aracterized by the f act, that the non-conductive pad (6) is from an insulating material with a thickness smaller than one third of the core's (1) height.

15. The non-stationary magnetic field emitter according to any of the claims 1 to 6 i s ch aracterized by the fact, that the conductor (4) is composed of divided strips, whereby at least some of the strips are created by a bi-metal connection of two layers with different thermal expansions and these strips are wrapped around the core (1) at reduced temperature; at working temperature a shear stress keeps the strip in a wrapped position.

16. The non-stationary magnetic field emitter according to any of the claims 1 to 15 i s ch aracterized by the f act, that it is placed on a substrate (5) of a removable memory card with a contact interface.

17. The non-stationary magnetic field emitter according to the claim 16 is ch aracterized by the fact, that the removable card is a microSD card or a SIM card or a mini-SIM card or a micro-SIM card or a nano-SIM card.

18. The non-stationary magnetic field emitter according to any of the claims 1 to 15 i s ch aracterized by the f act, that it is placed on the substrate (5) of a printed circuit board of the host device.

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