APPARATUS FOR SAVING POWER IN A TRANSMITTER CHAIN

摘要

The invention discloses a transmitter chain (200, 200') for a controlling node (110) of a cell (105) in a cellular communications system (100), which comprises an antenna (225) with a first (230) and a second (235) radiation element of a first and a second polarization, respectively. The transmitter chain (200, 200') also comprises a first (215) and a second (220) power amplifier, and additionally comprises a splitter (210) for splitting an incoming signal to the first (215) and the second (220) power amplifier. The first power amplifier (215) is connected to the radiation element (230) of the first polarization, and the second power amplifier (220) is connected to the radiation element (235) of the second polarization. Suitably, the first and second polarizations are orthogonal to each other, and are vertical and horizontal polarizations, or right and left circular polarizations.