| 摘要 |
A radio base station ( 20 ) comprises an antenna ( 22 ); a first power amplifier ( 24 <SUB>1</SUB>) configured to receive a first carrier signal; a second power amplifier ( 24 <SUB>2</SUB>) configured to receive a second carrier signal; and an imbalanced combiner ( 30 ). The imbalanced combiner ( 30 ) is configured to apply a power imbalanced combined signal to the antenna. The power imbalanced combined signal has a power imbalance between a first power level of the first carrier signal and a second power level of the second carrier signal as transmitted from the antenna ( 22 ).
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