| CPC H04B 7/0413 (2013.01) [H01P 1/207 (2013.01); H05K 1/0243 (2013.01); H05K 1/115 (2013.01); H05K 2201/1006 (2013.01); H05K 2201/10098 (2013.01)] | 6 Claims |

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1. 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.
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