An electronic device may include a housing including a first conductive portion, a second conductive portion electrically isolated from the first conductive portion, and a third conductive portion electrically isolated from the first conductive portion and the second conductive portion, a first wireless communication circuit disposed in the space and to transmit or receive a first signal and a second signal, which have a frequency in a first frequency range, through Multiple Input Multiple Output (MIMO) using the first conductive portion and the second conductive portion, respectively, and a second wireless communication circuit disposed in the space and transmit or receive a third signal and a fourth signal having a frequency in a second frequency range through Carrier Aggregation (CA) using the third conductive portion and the conductive pattern, respectively.