An electronic device comprising: a housing; a first antenna located at a first part of the housing; a second antenna located at a second part of the housing; a transceiver configured to generate a first signal and a second signal; a first coupler electrically connected between the first antenna and the transceiver and configured to receive the first signal from the transceiver and provide the received first signal to the first antenna; a second coupler electrically connected to the second antenna and the transceiver and configured to receive the second signal from the transceiver and provide the received second signal to the second antenna; and a control circuit operationally connected to the transceiver, characterized in that the electronic device further comprises: a first power amplifier electrically connected between the first coupler and the transceiver, and a second power amplifier electrically connected between the second coupler and the transceiver; and in that the control circuit is configured to: obtain a first value related to a first gain of the first signal, based on a first feed back signal of the first signal fed back by the first coupler, obtain a second value related to a second gain of the second signal, based on a second feed back signal of the second signal fed back by the second coupler, determine whether the first value is higher than the second value, and based on the first value being higher than the second value and a difference between the first value and the second value, control the first power amplifier and the second power amplifier such that a transmission power of the first signal is increased and a transmission power of the second signal is reduced. a housing; a first antenna located at a first part of the housing; a second antenna located at a second part of the housing; a transceiver configured to generate a first signal and a second signal; a first coupler electrically connected between the first antenna and the transceiver and configured to receive the first signal from the transceiver and provide the received first signal to the first antenna; a second coupler electrically connected to the second antenna and the transceiver and configured to receive the second signal from the transceiver and provide the received second signal to the second antenna; and a control circuit operationally connected to the transceiver, characterized in that the electronic device further comprises: a first power amplifier electrically connected between the first coupler and the transceiver, and a second power amplifier electrically connected between the second coupler and the transceiver; and in that the control circuit is configured to: obtain a first value related to a first gain of the first signal, based on a first feed back signal of the first signal fed back by the first coupler, obtain a second value related to a second gain of the second signal, based on a second feed back signal of the second signal fed back by the second coupler, determine whether the first value is higher than the second value, and based on the first value being higher than the second value and a difference between the first value and the second value, control the first power amplifier and the second power amplifier such that a transmission power of the first signal is increased and a transmission power of the second signal is reduced. a first power amplifier electrically connected between the first coupler and the transceiver, and a second power amplifier electrically connected between the second coupler and the transceiver; and in that the control circuit is configured to: obtain a first value related to a first gain of the first signal, based on a first feed back signal of the first signal fed back by the first coupler, obtain a second value related to a second gain of the second signal, based on a second feed back signal of the second signal fed back by the second coupler, determine whether the first value is higher than the second value, and based on the first value being higher than the second value and a difference between the first value and the second value, control the first power amplifier and the second power amplifier such that a transmission power of the first signal is increased and a transmission power of the second signal is reduced. obtain a first value related to a first gain of the first signal, based on a first feed back signal of the first signal fed back by the first coupler, obtain a second value related to a second gain of the second signal, based on a second feed back signal of the second signal fed back by the second coupler, determine whether the first value is higher than the second value, and based on the first value being higher than the second value and a difference between the first value and the second value, control the first power amplifier and the second power amplifier such that a transmission power of the first signal is increased and a transmission power of the second signal is reduced.