| 摘要 |
An active antenna array comprises a plurality of transmission paths, a variable common power supply unit, and an envelope detection system. The transmission paths are adapted to carry a plurality of similar transmission path signals, wherein at least one of the plurality of transmission paths comprises an amplifier having a power input and a signal input for one of the plurality of similar transmission path signals. The variable common power supply unit is connected to the power input of the amplifier for supplying power to the amplifier. The envelope detection system is connected to an envelope input of the variable common power supply unit and adapted to provide a common envelope signal for the plurality of similar transmission path signals to the variable common power supply unit. A method for envelope tracking and computer program products for manufacture and method execution are also claimed.
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