A device includes a first adjustment unit which is configured to adjust a power of a first carrier signal, and a second adjustment unit configured to adjust a power of a second carrier signal. The first adjustment unit is configured to adjust the first carrier signal power based on a maximum allowable imbalance between the first carrier signal power and the second carrier signal power. A method for controlling a transmit power in a user equipment of a radio communications system includes calculating in the user equipment first carrier signal power and a second carrier signal power. The method further includes adjusting in the user equipment the calculated transmit power for at least one out of the first carrier signal and the second carrier signal based on the maximum allowable power imbalance between the first carrier signal power and the second carrier signal power.