Patent ID: 9712191
Date: 2017-07-18
CPC Classifications: H01Q,H03F,H04B

Claim:
1. An apparatus for feeding an antenna array comprising at least first and second antenna elements, the apparatus comprising: a first transmitting element configured to receive a first base band signal and to feed a first feed signal to a first antenna element, the first transmitting element comprising a first power amplifier; a second transmitting element configured to receive a second base band signal and to feed a second feed signal to a second antenna element; the second transmitting element comprising a second power amplifier; and a tapering control unit adapted to provide a tapering function between the first feed signal to the first antenna element and the second feed signal to the second antenna element, wherein the tapering control unit is adapted to provide first and second control signals for individually controlling bias settings of the first power amplifier and the second power amplifier, respectively, according to the tapering function provided between the first and second feed signals, and wherein the controlling of bias setting comprises controlling a supply voltage provided to the first power amplifier and the second power amplifier to fit a power capability need created by the tapering function.