| 摘要 |
<p>A connection unit (150) comprising a feeder port (151) for connecting the connection unit (150) to an antenna feeder (190), a first relay port (153) for connecting the connection unit to a receiving and transmitting port (102) of a first base station(100), and a second relay port (156) for connecting the connection unit to a diversity receiver port (144) of a second base station (140), wherein the connection unit (150) comprises a directional coupler (157) for separating signals where a signal in the first feeder port (151) is divided into a first output signal in the first relay port (102) of the first base station (100) and a second output signal in the diversity receiver port (144) of a second base station (140). A signal in the first relay port (153) is, however, passed undivided to the feeder port (151). Diversity may be selectively provided in the receiving direction, but substantially no additional loss is introduced to the main transmission direction.</p> |
