Transmission and reception array antenna and communication node including the same

A communication node comprising a transmission and reception array antenna for transmitting and receiving beams with a satellite, wherein the transmission and reception array antenna comprises:

• a plurality of transmission antenna elements and a plurality of reception antenna elements disposed on a first surface of a first substrate;
• a plurality of transmission beamforming elements disposed on a second surface of the first substrate and connected to the plurality of transmission antenna elements;
• and
• a plurality of reception beamforming elements disposed on a first surface of a second substrate overlapping the first substrate and connected to the plurality of reception antenna elements, the second surface of the first substrate being adjacent to the first surface of the second substrate.