| 摘要 |
<p>This application relates to tower mounted apparatus with a multi-band capability. A signal in a first band received at a first antenna (1800 ANT1, Fig. 7) is passed through a tower mounted amplifier (TMA) unit 104. A multiplexer unit 106 multiplexes output signal 108 from the TMA unit with another signal such as a signal 114 in a second band received at a second antenna (900 ANT1, Fig. 7). The output of the multiplexer unit is attached to the top end of a feeder cable 52. Use of the multiplexer unit permits a reduction in the number feeder cables. The housing of the TMA unit 104 is stacked on top of the housing of the multiplexer unit 106 so that the TMA acts as a lid or cover for the multiplexer unit. Alternatively, the multiplexer unit may be stacked on top of the TMA unit. Preferably the TMA unit includes two TMAs for amplifying signals from two antennas. Preferably the multiplexer unit includes two diplexers, each outputting to a separate feeder cable.</p> |
