received by the International Bureau on 19 July 2013 (19.07.2013)

1. An antenna on a removable card (1) for the creation of an additional contactless communication channel of a mobile communication device such as a mobile phone, where the removable card (1) i.e. a removable memory card (1) is intended for insertion in an extending mobile communication device slot and where a signal emitted from the antenna is received by a standard receiving device i s cha racterized by the fact t h a t the antenna is formed by a high-frequency transformer (2) with a oblong ferrite kernel (3), with the primary winding L1's inputs A - B and a secondary winding L2's outputs C - D ,

oblong ferrite kernel (3) is located in parallel to the surface of the removable card (1), the primary winding L1 is resonantly tuned within the antenna frequency band,

the primary winding L1 has a smaller or equal number of conductor (5) loops than the secondary winding L2, outputs C-D of the secondary winding L2 are in open circuit, without a contact closed load circuit, while an emitted signal is brought from an output driver (6) to inputs A - B of the primary winding L1, electric field of the emitted signal is emitted mainly through the outputs C - D of the secondary winding L2 and the magnetic field of the emitted signal runs mainly through the kernel (3) ends.

2. An antenna according to the claim l is characterized by the fact that it contains at least two high-frequency transformers (2) with ferrite kernels (3) while the axes of the kernels (3) are oriented differently.

3. An antenna according to the claim 2 i s characterized by the fact that the high-frequency transformers (2) are phased differently.

4. An antenna according to the claims 1 to 3 i s characterized by the fact that the primary winding L1 is resonantly tuned, preferably in the range between 13 MHz to 15 MHz, through at least one capacity element C2, C2' that is connected to the primary winding L1 and/or through a corresponding capacity of the primary winding L1 conductor (5) windings itself and/or through capacity of conductors (5) of all windings L1, L2 and/or through electromagnetic connections with its surroundings.

5. An antenna according to any of the claims 1 to3is characte rized by the fact t h a t the secondary winding L2 is formed from one coiling of the flat conductor (5) that is in the shape of a pipe with "C" form profile, the arms of this "C" profile are not conductively connected, the primary winding L1 with a kernel (3) is within the pipe and the length of the pipe corresponds or exceeds the length of the kernel (3).

6. An antenna according to any of the claims 1 to3is chara cterized by the fact t h a t the secondary winding L2 is formed by a coil of flat conductor (5) that is coiled spirally into a pipe; the flat conductor (5) layers are put one above the other and they are conductively isolated; the primary winding L1 with a kernel (3) is within the pipe and the length of the pipe corresponds or exceeds the length of the kernel (3).

7. An antenna according to any of the claims 1 to 6 i s characterized by the fact t h a t the outputs C-D of the secondary winding end in dipole (4), preferably with a length of up to 15 mm.

8. An antenna according to the claim 7 is cha ra cte rized by the fact that dipoles (4) are placed on the edges of the removable memory card (1),

9. An antenna according to the claim 7 i s ch a racte rized by the fact that dipole (4) is formed by a conductive facette on the outer surface of the removable memory card (1); the conductive surface has preferably sharp edges for the emission of the electric field.

10. An antenna according to any of the claims 1 to 9 i s ch a racte rized by the fact t h a t the output or both outputs of the secondary winding L2 are connected to the grounding and/or powering and/or with a removable card (1) interface and/or with other element on the removable card (1).

11. An antenna according to any of the claims 1 to 10 i s ch aracterized by the fact t h a t the high-frequency transformer (2) has a primary and secondary winding L1 , L2 that is placed on the kernel (3) coaxially and the windings L1 , L2 are independent, galvanically separate.

12. An antenna according to any of the claims 1 to 4 and 7to 10is chara cterized by the fact that the high-frequency transformer (2) is an auto-transformer with one winding and bifurcations of the primary and secondary circuit L1, L2.

13. An antenna according to any of the claims 1 to 12 c s ch aracterized by the fact, that the high-frequency transformer (2) has an auxiliary winding L3 for the reception of a signal in direction towards the removable card (1), the auxiliary winding L3 is connected with the input amplifier (7); the capacity element C1 is preferably connected to the auxiliary winding L3.

14. An antenna according to the claim 13 is characterized by the f act that the center of the auxiliary winding L3 is grounded.

15. An antenna according to any of the claims 1 to 14 is characterized by the fact that it is complemented with an independent receiving antenna (8) for reception of a signal in direction towards the removable card (1).

16. An antenna according to any of the claims 1 to 15 i s characterized by the fact, that the kernel (3) is in the form of oblong rod with a rectangular or round cross- section with thickness up to 1mm, width of up to 5 mm and length of up to 15 mm.

17. An antenna according to the claim 16 is characterized by the fact that the kernel (3) has rectangular cross-section with thickness up to 0,5mm, width of up to 1 mm and length of up to 11 mm.

18. An antenna according to any of the claims 1 to 17 i s ch a racterized by the fact, that the high-frequency transformer (2) is made out of several independent coils (9) with ferrite kernels (3), coils (9) are placed next to each other so that the kernels (3) touch and the coils (9) are outputs of conductors connected in series circuit and/or parallel circuit and/or series-parallel circuit.

19. An antenna according to the claim 18 is characterized by the fact, that the coils (9) are covered by a common conductive shielding cover.

20. An antenna according to any of the claims 1 to 19 i s characte rized by the fact that some of the windings L1 , L2, L3 form a shielding cover inside of which there is a kernel (3) with other windings.

21. An antenna according to any of the claims 1 to 18 i s ch aracterized by the fact that the high-frequency transformer (2) is within a shielding cover with openings for the emission of the magnetic field.

22. An antenna according to the claim 21 is cha ra cterized by the fact that some of the windings L1, L2, L3 are interconnected with the shielding cover.