| 摘要 |
A power reduction device (20) for reducing power in a transmission signal (25) received from a mobile telecommunications base station (30) and its use as part of a distributed antenna system (5) is disclosed. The power reduction device (20) comprises a transmission line (40) for transmission of the transmission signal (25), a coupler (70) attached to the transmission line (40) for extraction of at least a small portion of the transmission signal (25') and an energy conversion unit (80) attached to the transmission line (40) for the conversion of a majority portion of the transmission signal (25") to electrical energy. |
