An electronic device comprising: an antenna; a communication circuit connected with the antenna; and one or more processors, wherein the one or more processors are configured to: during a first averaging window, the first averaging window comprising a plurality of time intervals including a first time interval, a second time interval following the first time interval, and a third time interval following the second time interval: identify a second amount of power corresponding to a second output signal outputted through the antenna for the second time interval using the communication circuit, wherein identifying the second amount of power comprises identifying a second electromagnetic wave absorption rate corresponding to the second amount of power; determine a maximum power limit value for the third time interval based on a difference between a target electromagnetic wave absorption rate for the second time interval and the second electromagnetic wave absorption rate for the second time interval, the target electromagnetic wave absorption rate corresponding to a maximum power limit value for the second time interval; and output the third output signal through the antenna for the third time interval based, at least in part, on the maximum power limit value for the third time interval. an antenna; a communication circuit connected with the antenna; and one or more processors, wherein the one or more processors are configured to: during a first averaging window, the first averaging window comprising a plurality of time intervals including a first time interval, a second time interval following the first time interval, and a third time interval following the second time interval: identify a second amount of power corresponding to a second output signal outputted through the antenna for the second time interval using the communication circuit, wherein identifying the second amount of power comprises identifying a second electromagnetic wave absorption rate corresponding to the second amount of power; determine a maximum power limit value for the third time interval based on a difference between a target electromagnetic wave absorption rate for the second time interval and the second electromagnetic wave absorption rate for the second time interval, the target electromagnetic wave absorption rate corresponding to a maximum power limit value for the second time interval; and output the third output signal through the antenna for the third time interval based, at least in part, on the maximum power limit value for the third time interval. identify a second amount of power corresponding to a second output signal outputted through the antenna for the second time interval using the communication circuit, wherein identifying the second amount of power comprises identifying a second electromagnetic wave absorption rate corresponding to the second amount of power; determine a maximum power limit value for the third time interval based on a difference between a target electromagnetic wave absorption rate for the second time interval and the second electromagnetic wave absorption rate for the second time interval, the target electromagnetic wave absorption rate corresponding to a maximum power limit value for the second time interval; and output the third output signal through the antenna for the third time interval based, at least in part, on the maximum power limit value for the third time interval.