Antenna filter and electronic device including same in wireless communication system

An antenna module comprising:

• at least one antenna array including a plurality of antenna elements;
• at least one radio frequency (RF) chip;
• a board including a plurality of RF components for a plurality of RF paths;
• a plurality of ceramic waveguide filters, each of the plurality of ceramic waveguide filters being disposed in a RF path of the plurality of RF paths;
• and
• a plurality of sub-boards functioning as a bumper, each of the plurality of the sub-boards being coupled to a corresponding ceramic waveguide filter,
• wherein the each of the plurality of the sub-boards includes, for the corresponding ceramic waveguide filter, an input port and an output port formed of a via, and a low-pass filter (LPF) for filtering an RF signal applied to the input port, and
• wherein the plurality of sub-boards are disposed between the plurality of ceramic waveguide filters and the board.