This paper introduces an implementation of GPU-based beamforming antenna module consisting of 4 elements. The proposed system can be mounted on top of the next generation base station system to reduce the radiating power at the base station. The transmitting power at base station is reduced proportionally to the number of antenna elements, due to the pencil beam provided between the base station and receiving terminal. Conversely, received signal at the terminal is enhanced by 4 times if the transmit power is maintained the same. Through various experimental tests, we have verified the proposed system consisting of 4 antenna elements provides nearly 12dB improvement in the receiving power at the terminal.