An electronic device (100, 101, 200, 300, 400, 2300, 2400, 2500, 3400) for providing credit card transaction information to an external device (102, 104), the electronic device (100, 101, 200, 300, 400, 2300, 2400, 2500, 3400) comprising: a housing (401, 501); a conductive pattern (553a, 553b, 553c) that is arranged within the housing (401, 501) and is formed to generate a magnetic field; a plate (402a, 402b) that forms at least a part of a first surface of the housing (401, 501) and includes a material that at least partially transmits the magnetic field generated by the conductive pattern (553a, 553b, 553c); and a control circuit (857, 957, 1057) configured to transmit at least one transaction information to an external device by using the conductive pattern (553a, 553b, 553c), wherein the conductive pattern (553a, 553b, 553c) includes: a first coil that includes a plurality of first turns that are substantially parallel to a surface of the plate (402a, 402b); and a second coil that includes a plurality of second turns that are substantially parallel to the surface of the plate (402a, 402b), wherein, when viewed from a upper side of the plate (402a, 402b), the first coil and the second coil do not overlap, wherein, for the at least one transaction information transmitted to the external device (102, 104), the control circuit (857, 957, 1057) is configured to provide a first signal and a second signal that include at least a part of the transaction information to the first coil and the second coil. characterized in that the control circuit (857, 957, 1057) is configured to provide the first signal to the first coil and to not provide the second signal to the second coil for a first time interval, the control circuit (857, 957, 1057) is configured to not provide the first signal to the first coil and to provide the second signal to the second coil for a second time interval, at least one of the first coil and the second coil is configured to generate magnetic flux having a null section (NULL) in which an intensity of the magnetic flux is weaker than in other sections, and the at least one of the first coil and the second coil is configured to radiate the magnetic flux such that the null section (NULL) is shifted from a central portion of the at least one of the first coil and the second coil. a housing (401, 501); a conductive pattern (553a, 553b, 553c) that is arranged within the housing (401, 501) and is formed to generate a magnetic field; a plate (402a, 402b) that forms at least a part of a first surface of the housing (401, 501) and includes a material that at least partially transmits the magnetic field generated by the conductive pattern (553a, 553b, 553c); and a control circuit (857, 957, 1057) configured to transmit at least one transaction information to an external device by using the conductive pattern (553a, 553b, 553c), a first coil that includes a plurality of first turns that are substantially parallel to a surface of the plate (402a, 402b); and a second coil that includes a plurality of second turns that are substantially parallel to the surface of the plate (402a, 402b), wherein, when viewed from a upper side of the plate (402a, 402b), the first coil and the second coil do not overlap, wherein, for the at least one transaction information transmitted to the external device (102, 104), the control circuit (857, 957, 1057) is configured to provide a first signal and a second signal that include at least a part of the transaction information to the first coil and the second coil. the control circuit (857, 957, 1057) is configured to provide the first signal to the first coil and to not provide the second signal to the second coil for a first time interval, the control circuit (857, 957, 1057) is configured to not provide the first signal to the first coil and to provide the second signal to the second coil for a second time interval, at least one of the first coil and the second coil is configured to generate magnetic flux having a null section (NULL) in which an intensity of the magnetic flux is weaker than in other sections, and the at least one of the first coil and the second coil is configured to radiate the magnetic flux such that the null section (NULL) is shifted from a central portion of the at least one of the first coil and the second coil.