| 摘要 |
The antenna comprises antenna elements of which the axes are perpendicular to each other with common phase center and presenting a directive effect with two radiation diagrams electrically controllable, said elements forming a reception plane by their axis. The elements are each connected to a multiplier of which the output is connected to a summing circuit at the output of which the signal for the receiver may be received. In order to suppress interference signals, a third antenna element is used which has also a radiation diagram of which the axis is perpendicular to the axis of the other two elements and which also has the same base center. To this third element (C) there is associated, as for the other two elements (AB), a multiplier (14) providing the voltages (Uc) which are entered with the voltages (UAUB) provided by the other multipliers in the summing circuit (12). Thus, the amplification, respectively the attenuation and a plurality of the voltages provided by the three antenna elements (A, B, C) with each multiplier (14) may be adjusted as desired and particularly continuously and with a variable sign, with respect to each other. |
