According to various embodiments, an electronic device may comprise: a first antenna having a first polarization characteristic; a second antenna having a second polarization characteristic different from the first polarization characteristic; a switch operatively connected to the first antenna and the second antenna; and a processor operatively connected to the first antenna and the second antenna through the switch. When transmitting at least one packet by using the first antenna, the processor may identify one or more time points of the packet, transmit a first area of the packet on the basis of a first time point among the identified time points by using the first antenna, switch the first antenna to the second antenna on the basis of a second time point among the identified time points, and transmit a second area of the packet on the basis of the second time point of the packet by using the second antenna. Various other embodiments may be possible.