The utility model relates to an intelligent antenna used for a direct current synthesis field tester. The intelligent antenna is characterized in that the intelligent antenna is in a ''Y'' shape; the intelligent antenna is formed by two mutually perpendicular antennas and is an integrated structure, wherein roots of the two antennas are connected together; the intelligent antenna is installed on a lower computer of the direct current synthesis field tester. The intelligent antenna of the utility model adopts the two mutually perpendicular antennas and can cover three 120-degree sectors. A radio frequency communication signal is guided to a concrete direction and a spatial directional beam so that a signal emitted by the lower computer can be directionally received by an upper computer. Integrity and accuracy of data transmission are increased. The antenna has unique advantages for increasing communication quality, reducing integral system cost and improving system management.