Disclosed is an electronic device comprising a housing, a display, an antenna structure and at least one wireless communication circuit. The at least one wireless communication circuit is configured so as to transmit and/or receive a signal having a frequency between 3 GHz and 100 GHz, and may be configured so as to transmit and/or receive, in a first operation, a first signal having a first frequency by using not all but at least one conductive plate among a plurality of first conductive plates and a plurality of second conductive plates, and transmit and/or receive, in a second operation, a second signal having a second frequency differing from the first frequency by using not all but at least one conductive plate among the plurality of second conductive plates and the plurality of first conductive plates. In addition, various embodiments are possible as identified in the specification.