| 摘要 |
Antenna diversity system has switch device arranged in an antenna diversity module (6) which is connected to input side with the antennas (A 1,A 2,...A N) and is separated from the receiver (1). The module is connected to output side with the receiver by the high frequency line (4). During interference in the summed signal (8) diversity suited other coordinated adjustment of the switching position of the addressable signal selector switch is selected. System has two separate signal paths (15,16) within the antenna diversity module branching out of the input side signal path (14a). The output signals of the signal paths is supplied to the inputs of a summation member (9) and summed. The summed signal is supplied to the receiver by the high frequency line. One of the signal paths contains a phase rotating device (10) adjusted accurately in the phase angular rotation, with the effect that, if the receiving signal of one of the antennas is interconnected to one of the two inputs of the summation member during the switching positioning of the signal selector switch (12) the receiving signal of the other antennas passes through first one of the firmly adjusted phase rotating devices and is then interconnected to the other inputs of the summation member. |
