| 摘要 |
<p>A receiver (50) comprising: an antenna (12) for receiving signals in a plurality of frequency ranges; a plurality of amplifiers (20, 22, 24), each of the plurality of amplifiers (20, 22, 24) being configured to amplify signals in one of the plurality of frequency ranges; a plurality of receive paths (54, 56, 58), each of the plurality of receive paths (54, 56, 58) connecting an output of the antenna (12) to an input of one of the plurality of amplifiers (22, 24, 26), wherein each of the plurality of receive paths (54, 56, 58) includes a power detector (112, 114, 116) for monitoring signal power in the receive path and a switch (70, 90, 110) which can be operated to activate or deactivate the receive path (54, 56, 58), wherein the switch (70, 90, 110) of each receive path (54, 56, 58) is operable to deactivate the receive path (54, 56, 58) if an overload condition is detected by the power detector (112, 114, 116) of that receive path (54, 56, 58).</p> |
