ELECTRONIC DEVICE COMPRISING INTERPOSING BOARD FOR ANTENNA

The disclosure relates to a 5th Generation (5G) or pre-5G communication system for supporting a data transfer rate higher than that of a post-4th Generation (4G) communication system such as Long Term Evolution (LTE). According to embodiments of the disclosure, a radio unit (RU) module includes a first printed circuit board (PCB) on which a plurality of antenna elements are disposed; a second PCB on which a radio frequency integrated circuit (RFIC) is disposed; and a third PCB configured to electrically connect each of the plurality of antenna elements disposed on the first PCB and the RFIC disposed on the second PCB, wherein the size of the third PCB is smaller than the size of the first PCB and greater than the size of the second PCB, a first surface of the third PCB is coupled to a first surface of the first PCB through a grid array, and positions of feeding ports on the first surface of the third PCB correspond to positions in which ports of the plurality of antenna elements are disposed on a second surface opposite the first surface of the first PCB.